КОНТАКТНЫЕ СТРУКТУРЫ

Изобретение относится к реакционным контактным структурам, используемым в реакторах алкилирования парафинов в качестве внутренней статической насадки системы, такой как диспергирующее устройство. Система для смешивания содержит вертикальный реактор для осуществления каталитических реакций перемешивания и расположенное в реакционной зоне диспергирующее устройство. Диспергирующее устройство выполнено в виде сетки, сплетенной с многожильным элементом, или вытянутого или раскатанного металла, переплетенного вместе с многожильным элементом, причем многожильную нить выбирают из инертных полимеров, каталитических полимеров, каталитических металлов или их смесей. Проволочная сетка обеспечивает структурную целостность системы, а также, по меньшей мере, 50 об.% открытого пространства в реакторах, необходимого, для перемещения паров и жидкостей через систему. Диспергирующее устройство может иметь форму листов, пучков или пакетов или размещаться внутри рамки. Настоящее изобретение позволяет более эффективно ...

КАТАЛИЗАТОРЫ ОБРАБОТКИ НЕСТАЦИОНАРНЫХ ВЫБРОСОВ NO

Изобретение относится к композиции катализатора для обработки выхлопного газа. Данная композиция включает a) первое молекулярное сито, имеющее предварительно состаренную решетку ВЕА или решетку ВЕА с изоморфным железом, в котором указанное первое молекулярное сито содержит от 0,5 до 5 весовых процентов, полученного ионным обменом или свободного железа; и b) второе молекулярное сито, имеющее кристаллическую структуру с малыми порами и содержащее от 0,5 до 5 весовых процентов полученной ионным обменом или свободной Cu. При этом отношение указанного первого молекулярного сита и указанного второго молекулярного сита составляет от 0,1 до 1. Предлагаемая композиция катализатора характеризуется более высокой общей конверсией NOпри равном или более низком проскоке NH, чем любой молекулярно-ситовой компонент, взятый отдельно. Настоящее изобретение относится также к катализатору для обработки выхлопного газа, включающему данную композицию, и способу обработки выхлопного газа. 3 н. и 11 з.п. ф-лы, ...

КАТАЛИЗАТОР С УЛУЧШЕННЫМИ ПАРАМЕТРАМИ НАЧАЛА РАБОТЫ

Изобретение относится к металлическим сотовым элементам для очистки отработавших газов двигателей внутреннего сгорания. Сущность изобретения: катализатор для очистки отработавших газов двигателей внутреннего сгорания, содержащий сотовый элемент из гладких и гофрированных металлических листов с входной торцевой поверхностью и выходной торцевой поверхностью для отработавших газов, причем металлические листы снабжены отверстиями для уменьшения их теплоемкости, а на металлические листы нанесена катализаторная масса, при этом отверстия металлических листов заполнены катализаторной массой, а площадь отверстий всех отверстий в совокупности составляет от 5 до 80% площади металлических листов. Также использование катализатора для очистки отработавших газов двигателя внутреннего сгорания. Техническим результатом изобретения является уменьшение теплоемкости и теплопроводности катализатора. 2 н. и 10 з.п. ф-лы, 3 табл., 7 ил.

КОРПУС-НОСИТЕЛЬ ДЛЯ ДООЧИСТКИ ОТРАБОТАВШИХ ГАЗОВ С ДИСПЕРСНЫМ РАСПОЛОЖЕНИЕМ КАТАЛИЗАТОРА

Изобретение относится к корпусу-носителю для каталитически активного покрытия, используемому для доочистки отработавших газов в транспортных средствах. Описан корпус-носитель (1) с суммарной поверхностью (7), имеющей по меньшей мере один участок (8) покрытия с каталитически активным покрытием (2), включающим в себя по меньшей мере один тип катализаторных элементов (32), которые дисперсно расположены на поверхности (35) корпуса-носителя (1), при этом катализаторные элементы (32) имеют средний интервал (34) вдоль поверхности, равный по меньшей мере 3 микрометрам, поверхность (35) имеет среднюю глубину шероховатости RZ, равную от 2 до 10 микрометров, и корпус-носитель (1) имеет по сравнению с корпусом-носителем с гладкой поверхностью (35) без покрытия максимальное увеличение падения напора, равное 25%. Описан способ изготовления корпуса-носителя (1) с суммарной поверхностью (7), имеющей по меньшей мере один участок (8) с каталитически активным покрытием (2), с по меньшей мере следующими шагами ...

КАТАЛИЗАТОР ОКИСЛЕНИЯ ДЛЯ ДВИГАТЕЛЯ, РАБОТАЮЩЕГО НА ОБЕДНЕННОМ СЖАТОМ ПРИРОДНОМ ГАЗЕ

Изобретение относится к каталитической композиции, способу ее получения, к каталитическому изделию и способу превращения углеводорода в потоке выхлопного газа. Каталитическая композиция выполнена с возможностью превращения углеводородов в содержащем углеводороды потоке и содержит компонент металла платиновой группы (PGM), нанесенный на материал, содержащий оксид циркония. Оксид циркония составляет по меньшей мере 90 мас.% в моноклинной фазе. Компонент металла платиновой группы (PGM) включает платину и палладий, присутствующие при массовом соотношении от 1:1 до 0,1:1, и причем один или оба из палладия и платины находится в форме коллоидно нанесенных наночастиц. Способ получения каталитической композиции включает объединение материала, содержащего оксид циркония, с коллоидным раствором по меньшей мере одного предшественника металла платиновой группы, так что по меньшей мере один металл платиновой группы включается в форме наночастиц на материал, содержащий оксид циркония. Каталитическое изделие ...

ФИЛЬТР, СОДЕРЖАЩИЙ ОБЪЕДИНЕННЫЙ КАТАЛИЗАТОР ДЛЯ ОКИСЛЕНИЯ САЖИ И NH-SCR КАТАЛИЗАТОР

Изобретение относится к фильтру с протеканием через стенки для фильтрования материала в виде частиц от протекающих отработанных газов и к способу его получения. Фильтр содержит катализатор для преобразования твердого углерода в материал в виде частиц с помощью кислорода и для селективного восстановления оксидов азота в отработанных газах с помощью азотистого восстановителя, причем катализатор содержит оксид церия и вольфрам. Изобретение также относится к выхлопной системе для транспортного средства, причем система содержит источник азотистого восстановителя, инжекционные средства для инжекции азотистого восстановителя в протекающих отработанных газах и фильтр с протеканием через стенки, расположенный после инжекционных средств. Технический результат заключается в уменьшении обратного давления в выхлопной системе, повышая эффективность двигателя. 3 н. и 10 з.п. ф-лы, 5 ил., 2 табл., 3 пр.

РЕАКЦИОННАЯ ТРУБА И СПОСОБ ПОЛУЧЕНИЯ ЦИАНИСТОГО ВОДОРОДА

Изобретение относится к способу получения цианистого водорода проведением реакции аммиака с алифатическими углеводородами и реакционной трубе для его получения. Реакционная труба представляет собой цилиндрическую трубу из керамики с нанесенным на ее внутреннюю стенку платиносодержащим катализатором и с по меньшей мере одним вставленным в нее встроенным элементом из керамики с тремя или четырьмя обращенными от оси трубы к ее внутренней стенке ребрами, которые подразделяют внутреннее пространство трубы на в основном прямые каналы с в основном одинаковыми имеющими форму круговых сегментов поперечными сечениями и среднее расстояние между концами которых и внутренней стенкой трубы составляет от 0,1 до 3 мм. Изобретение обеспечивает повышение общего выхода цианистого водорода, а также улучшение выхода с единицы объема в единицу времени и предотвращение стирания катализатора с внутренней стенки реакционной трубы. 3 н. и 8 з.п. ф-лы, 5 пр., 3 ил.

СПОСОБ, УСТАНОВКА И КОМПОЗИЦИЯ ДЛЯ ПРЕВРАЩЕНИЯ ПРИРОДНОГО ГАЗА В ВЫСОКОМОЛЕКУЛЯРНЫЕ УГЛЕВОДОРОДЫ ПОСРЕДСТВОМ МИКРОКАНАЛЬНОЙ ТЕХНОЛОГИИ

Изобретение относится к способу превращения природного газа в высокомолекулярные углеводороды. Способ включает паровой риформинг для получения синтез газа, который затем превращают по реакции Фишера-Тропша в высокомолекулярные углеводороды. Риформинг и реакции Фишера-Тропша проводят в микроканальных реакторах. Высокомолекулярные углеводороды затем обрабатывают и получают углеводородные продукты, такие как среднедистиллятное топливо, смазочные масла. В изобретении также описана композиция, содержащая смесь олефинов и алканов. Технический результат - высокая степень утилизации углерода. 2 н. и 21 з.п. ф-лы, 41 ил., 1 табл., 1 пр.

ЗОНИРОВАННЫЕ КАТАЛИТИЧЕСКИЕ КОМПОЗИТЫ

Изобретение относится к области очистки отработавших газов. Зонированный каталитический композит для потока выхлопных газов двигателя внутреннего сгорания включает монолитный носитель, состоящий из множества продольных каналов. Композит содержит зону, которая начинается от одного конца носителя и проходит по направлению оси вдоль продольных каналов так, что зона имеет плоский профиль. Зона включает каталитический материал, который действует, чтобы преобразовывать и/или улавливать один или несколько компонентов в потоке выхлопных газов. Длина зоны от одного конца носителя изменяется в диапазоне от 0 до 15% длины всего носителя от канала к каналу. Также предоставлены способы изготовления и применения каталитического композита. 4 н. и 10 з.п. ф-лы, 7 ил.

ЭКСТРУДИРОВАННЫЙ СОТОВЫЙ ЭЛЕМЕНТ, В ЧАСТНОСТИ КОРПУС-НОСИТЕЛЬ КАТАЛИЗАТОРА, С УСИЛЕННОЙ СТРУКТУРОЙ СТЕНОК

Изобретение относится к сотовому элементу, который используют, например, для каталитического превращения отработавших газов двигателя внутреннего сгорания. Экструдированный сотовый элемент, в частности корпус-носитель катализатора, имеет множество сквозных каналов для прохождения текучей среды. По меньшей мере часть каналов ограничена и/или отделена друг от друга стенками первой толщины и по меньшей мере часть каналов ограничена и/или отделена друг от друга стенками второй толщины, которая больше первой толщины. При этом сотовый элемент имеет придающую ему жесткость структуру стенок, образованную стенками второй толщины. Придающая жесткость структура стенок имеет несколько приблизительно прямых перегородок второй толщины, которые, отходя в соответствующем месте поперечно краю сотового элемента, проходят от соответствующей наружной стороны внутрь сотового элемента или полностью пересекают сотовый элемент. Ни один из каналов не ограничен только стенками, являющимися продолжениями перегородок ...

НОСИТЕЛЬ КАТАЛИЗАТОРА, СПОСОБ ЕГО ПОЛУЧЕНИЯ, СУСПЕНЗИЯ ДЛЯ ИСПОЛЬЗОВАНИЯ ПРИ ЕГО ПОЛУЧЕНИИ, КАТАЛИЗАТОР И ЕГО ПРИМЕНЕНИЕ ДЛЯ ПОЛУЧЕНИЯ ПЕРОКСИДА ВОДОРОДА

Изобретение относится к носителю катализатора, включающему волокнистую бумагу, пропитанную суспензией, содержащей золь диоксида кремния, микроволокна и наполнитель, в котором указанные микроволокна имеют эквивалентный средний размер частиц, измеренный способом седиграфа, от примерно 200 до примерно 30000 нм и указанный наполнитель имеет средний эквивалентный размер частиц, измеренный способом седиграфа, от примерно 300 до примерно 10000 нм. Изобретение, кроме того, относится к способу его получения, пригодной для этого суспензии, к катализатору, содержащему такой носитель катализатора, и применению катализатора для получения пероксида водорода. Технический эффект - повышение механической прочности носителя, получение катализатора, обладающего высокой активностью и долгосрочной стабильностью. 6 с. и 11 з.п. ф-лы, 2 табл.

ВЫХЛОПНАЯ СИСТЕМА ДЛЯ ДВИГАТЕЛЯ С ВОСПЛАМЕНЕНИЕМ ОТ СЖАТИЯ, ВКЛЮЧАЮЩАЯ ОБЛАСТЬ ЗАХВАТА ИСПАРИВШЕЙСЯ ПЛАТИНЫ

Изобретение относится к выхлопной системе для обработки выхлопных газов двигателя с воспламенением от сжатия, где выхлопная система содержит катализатор окисления, включающий носитель, который представляет собой проточный монолитный носитель или фильтрующий монолитный носитель и имеет поверхность входного конца и поверхность выходного конца; каталитический материал, расположенный на носителе, причем каталитический материал содержит платину (Pt); и зону захвата, содержащую захватывающий материал, где захватывающий материал содержит Pt-легирующий металл, расположенный на тугоплавком оксиде или нанесенный на тугоплавкий оксид, где Pt-легирующий металл в катализаторе окисления является палладием (Pd), причем захватывающий материал расположен на множестве стенок каналов или нанесен на множество стенок каналов внутри носителя, и при этом тугоплавкий оксид включает по меньшей мере 65% вес. оксида циркония, при этом данная зона захвата имеет среднюю длину ≤20 мм, расположена на поверхности выходного ...

КАТАЛИТИЧЕСКИЙ ФИЛЬТР С ПРОТОЧНЫМИ СТЕНКАМИ С КАТАЛИЗАТОРОМ НЕЙТРАЛИЗАЦИИ ПРОСКОКА АММИАКА

Изобретение предназначено для очистки выхлопных газов. Каталитический монолитный фильтр с проточными стенками для использования в системе очистки выхлопов имеет первую торцевую поверхность, вторую торцевую поверхность, длину фильтра, определяемую расстоянием от первой торцевой поверхности до второй торцевой поверхности, продольное направление между первой торцевой поверхностью и второй торцевой поверхностью и первое и второе множества каналов, простирающихся в продольном направлении. Первое множество каналов открыто на первой торцевой поверхности и закрыто на второй торцевой поверхности, а второе множество каналов открыто на второй торцевой поверхности и закрыто на первой торцевой поверхности. Монолитный фильтр содержит пористый субстрат, имеющий поверхности, которые образуют каналы, и имеющий первую зону, простирающуюся в продольном направлении от первой торцевой поверхности ко второй торцевой поверхности на расстояние, меньшее длины фильтра, и вторую зону, простирающуюся в продольном ...

НОВЫЕ ГЕОМЕТРИЧЕСКИЕ ФОРМЫ МНОГОКАНАЛЬНЫХ ТРУБЧАТЫХ ЭЛЕМЕНТОВ, ПРЕДНАЗНАЧЕННЫХ ДЛЯ ТАНГЕНЦИАЛЬНОЙ СЕПАРАЦИИ, СОДЕРЖАЩИХ ВСТРОЕННЫЕ УСИЛИТЕЛИ ТУРБУЛЕНТНОСТИ, И СПОСОБ ИХ ИЗГОТОВЛЕНИЯ

Изобретение относится к фильтрационным мембранам. Сепарационный элемент для тангенциальной сепарации обрабатываемой текучей среды на фильтрат и ретентат, при этом указанный сепарационный элемент содержит монолитную жесткую пористую основу прямолинейной структуры, в которой выполнены несколько каналов для протекания обрабатываемой текучей среды между входом и выходом для ретентата с целью сбора фильтрата от наружной поверхности основы, при этом монолитная жесткая пористая основа ограничивает препятствия, простирающиеся от внутренних стенок указанных каналов, для потока обрабатываемой текучей среды, которые характеризуются идентичностью материала и пористой текстуры с основой, а также непрерывностью материала и пористой текстуры с основой, при этом указанные препятствия создают вариации проходного сечения канала, когда варьирует по меньшей мере один из следующих критериев: площадь прямого сечения, форма прямого сечения, размеры прямого сечения канала. Технический результат – повышение эффективности ...

СМЕШАННЫЕ КАТАЛИТИЧЕСКИЕ КОМПОЗИЦИИ МЕТАЛЛИЧЕСКИХ КРУПНОКРИСТАЛЛИЧЕСКИХ МОЛЕКУЛЯРНЫХ СИТ, КАТАЛИТИЧЕСКИЕ ИЗДЕЛИЯ, СИСТЕМЫ И СПОСОБЫ

Описаны каталитическое изделие, способ селективного восстановления оксидов азота и система для обработки выхлопных газов. Каталитическое изделие включает подложку, имеющую, по меньшей мере, покрытие из пористого оксида на ней, так, чтобы содержать и первое молекулярное сито, промотированное медью, и второе молекулярное сито, промотированное железом. При этом первые и вторые молекулярные сита имеют d6r блок, и первое молекулярное сито имеет кристаллы кубической формы со средним размером кристалла от 0.5 до 2 микрон. Массовое соотношение промотированного медью молекулярного сита к промотированному железом молекулярному ситу составляет от 1:1 до 4:1. Технический результат - улучшение характеристик каталитического изделия для селективного восстановления оксидов азота при высоких и низких температурах и более низкое образование NO. 3 н. и 32 з.п. ф-лы, 6 ил., 8 пр.

КОНСТРУКЦИЯ СОТОВОГО ЭЛЕМЕНТА С НЕСУЩИМИ УЧАСТКАМИ (ВАРИАНТЫ)

Изобретение может быть использовано в системах нейтрализации отработавших газов автотракторных средств. Конструкция сотового элемента содержит металлический кожух, в котором размещен собственно сотовый элемент, который имеет множество отделенных друг от друга перегородками каналов и радиальная жесткость которого неоднородна в его окружном направлении (U), а также имеется компенсационный слой, который расположен между кожухом и сотовым элементом по меньшей мере на отдельных участках в окружном направлении (U), при этом указанный компенсационный слой имеет в окружном направлении (U) сотового элемента по меньшей мере два несущих участка, которые воздействуют на сотовый элемент в радиальном направлении (R) с большими усилиями, чем действующие вне этих несущих участков усилия на остальных расположенных в окружном направлении участках, причем упомянутые несущие участки расположены в тех местах сотового элемента, где последний обладает повышенной радиальной жесткостью. Такие несущие участки могут ...

СПОСОБ И УСТАНОВКА ДЛЯ НАНЕСЕНИЯ ПОКРЫТИЯ НА НОСИТЕЛЬ

Настоящее изобретение относится к способу нанесения на носитель покрытия из суспензии. Изобретение относится, в частности, к способу и установке для нанесения покрытий на носители катализаторов, например на носители автомобильных каталитических нейтрализаторов отработавших газов (ОГ). Описана установка для осуществления способа нанесения на носители с открытыми порами покрытия по меньшей мере из одной суспензии, включающей твердые вещества и растворенные в жидкой среде вещества, в количестве, которое во влажном состоянии всегда превышает необходимое заданное количество покрытия и колеблется от одного носителя к другому. Излишек суспензии удаляют из каналов носителя путем ее предварительной вытяжки, затем определяют разницу между фактически нанесенным на носитель количеством суспензии и необходимым заданным количеством покрытия и удалением еще влажной суспензии путем ее повторной вытяжки уменьшают разницу между фактически нанесенным на носитель количеством суспензии и заданным количеством ...

ДВИГАТЕЛЬ С ПРИНУДИТЕЛЬНЫМ ВОСПЛАМЕНЕНИЕМ И ВЫХЛОПНАЯ СИСТЕМА, СОДЕРЖАЩИЕ ФИЛЬТР С ТРОЙНЫМ КАТАЛИЗАТОРОМ

Двигатель с принудительным воспламенением содержит выхлопную систему для автомобильного двигателя внутреннего сгорания с принудительным воспламенением, которая содержит фильтр для фильтрации твердых частиц из выхлопного газа, выпускаемого из автомобильного двигателя внутреннего сгорания с принудительным воспламенением, который содержит пористую подложку, имеющую входные поверхности и выходные поверхности, где данная пористая подложка покрыта, по меньшей мере частично, пористым оксидным покрытием из тройного катализатора, содержащим металл платиновой группы и множество твердых частиц, где данное множество твердых частиц содержит по меньшей мере один оксид неблагородного металла и по меньшей мере один накапливающий кислород компонент, который представляет собой смешанный оксид или композитный оксид, содержащий церий, полученный из золя, где данный смешанный оксид или композитный оксид, содержащий церий, и/или данный по меньшей мере один оксид неблагородного металла имеет средний размер частиц ...

КАТАЛИТИЧЕСКИЙ ФИЛЬТР САЖИ ДЛЯ ОБРАБОТКИ ВЫХЛОПНОГО ГАЗА ДВИГАТЕЛЯ КОМПРЕССИОННОГО ВОСПЛАМЕНЕНИЯ

Изобретение относится к выхлопной системе для двигателя компрессионного воспламенения, содержащей каталитический фильтр сажи. Указанный каталитический фильтр сажи содержит катализатор окисления для обработки монооксида углерода (CO) и углеводородов (HC) в выхлопном газе из двигателя компрессионного воспламенения, при этом указанный катализатор окисления размещен на фильтрующей подложке, которая представляет собой фильтр с проточными стенками. При этом указанный катализатор окисления содержит: первую зону, содержащую компонент на основе металла платиновой группы (PGM), выбираемый из группы, состоящей из платинового (Pt) компонента, палладиевого (Pd) компонента и их сочетания; компонент на основе щелочноземельного металла, содержащий магний (Mg), кальций (Ca), стронций (Sr), барий (Ba) или сочетание двух или более из них; и материал-носитель, содержащий оксид алюминия, легированный диоксидом кремния, при этом указанный оксид алюминия легирован диоксидом кремния в количестве от 0,5 до 15% ...

КАТАЛИТИЧЕСКОЕ ИЗДЕЛИЕ ДЛЯ ПРИМЕНЕНИЯ В СИСТЕМЕ ОБРАБОТКИ ВЫХЛОПНЫХ ГАЗОВ

Группа изобретений относится к области катализаторов, а именно к каталитическим изделиям, предназначенным для обработки потока отработавших газов, образующихся при сгорании топлива. Описаны: каталитическое изделие, содержащее каталитически активную подложку, включающую один или более каналов, проходящих вдоль ее осевой длины, через которые при использовании протекает отработавший газ, образующийся при сгорании топлива, причем один или более каналов имеют первую поверхность для контакта с потоком отработавших газов, образующихся при сгорании топлива; при этом подложка выполнена из материала экструдированного ванадийсодержащего катализатора SCR, причем первый слой расположен по меньшей мере на части первой поверхности, при этом первый слой содержит покрытие из пористого оксида композиции каталитического нейтрализатора проскока аммиака, содержащего один или более металлов платиновой группы, поддерживаемых на материале носителя на основе частиц оксида металла, и при этом слой, содержащий покрытие ...

КАТАЛИЗАТОРЫ СКВ: ПЕРЕХОДНЫЙ МЕТАЛЛ/ЦЕОЛИТ

Изобретение относится к способу превращения оксидов азота в азот. Способ осуществляется путем контактирования оксидов азота с азотистым восстанавливающим агентом в присутствии синтетического цеолитного катализатора, содержащего от 0,1 до 10 мас.% металла, в расчете на общую массу цеолитного катализатора. При этом металл выбирают из Cu, Fe или их комбинации. Цеолитный катализатор нанесен на подложку фильтра и представляет собой силикоалюмофосфатный цеолит (SAPO), имеющий структуру СНА. Изобретение позволяет создать эффективные СКВ-катализаторы, которые имеют хорошую низкотемпературную СКВ-активность, высокую селективность к N, и хорошую термическую стойкость, а также являются относительно устойчивыми к ингибированию углеводородами. 3 н. и 14 з.п. ф-лы, 2 табл., 23 ил.

СОТОВЫЙ ЭЛЕМЕНТ С ИЗРЕЗАННЫМИ ИЛИ ИСПЕЩРЕННЫМИ НЕРОВНОСТЯМИ ТОРЦЕВЫМИ СТОРОНАМИ

Сотовый элемент (1) изготовлен из свернутых в рулон, скрученных в рулон и/или набранных в пакет металлических листов (2, 3) и имеет множество образованных ими по меньшей мере частично профилированных слоев (2), профильная структура которых образует каналы (4), проходящие от входной торцовой стороны (5) сотового элемента (1) до его выходной торцовой стороны (6). Часть образованных металлическими листами (2, 3) слоев имеет на своих краях (7, 8) с входной торцовой стороны (5) либо с входной торцовой стороны и выходной торцовой стороны (6) сотового элемента выемки (9, 10), придающие входной торцовой стороне (5), соответственно выходной торцовой стороне (6) сотового элемента испещренную или изрезанную неровностями структуру. Более 80% каналов (4) оканчиваются с по меньшей мере одной торцовой стороны (5, 6) сотового элемента в зоне по меньшей мере одной выемки (9, 10). Использование изобретения позволит обеспечить уменьшение вероятности осаждения частиц сажи на торцовых сторонах сотового элемента ...

КАТАЛИТИЧЕСКАЯ КОМПОЗИЦИЯ ДЛЯ СЕЛЕКТИВНОЙ КАТАЛИТИЧЕСКОЙ НЕЙТРАЛИЗАЦИИ ОТРАБОТАННЫХ ГАЗОВ

Каталитическая композиция, представленная общей формулой XVO/S, в которой XVOозначает ванадат переходного металла или смешанный ванадат переходного/редкоземельного металла, и S означает носитель, содержащий TiO. Изобретение позволяет получить катализатор на основе V с устойчивостью при температуре выше 600°C. 4 н. и 13 з.п. ф-лы, 8 ил., 20 табл.

АДСОРБЕР-КАТАЛИЗАТОР NOx

Изобретение относится к катализатору-ловушке обедненных NOx, содержащему: i) первый слой, причем указанный первый слой содержит смесь или сплав платины и палладия, первый неорганический оксид, который выбран из группы, состоящей из оксида алюминия и диоксида кремния-оксида алюминия, активатор, где данный активатор содержит барий, и материал, абсорбирующий углеводороды, причем материал, абсорбирующий углеводороды, является бета-цеолитом; и ii) второй слой, причем указанный второй слой содержит один или несколько металлов платиновой группы, материал, способный к аккумулированию кислорода (OSC), где указанный OSC выбран из группы, состоящей из оксида церия, и смешанного оксида церия-диоксида циркония, и второй неорганический оксид, причем указанный второй неорганический оксид выбран из группы, состоящей из оксида алюминия и сложного оксида лантана/оксида алюминия; где первый слой по существу не содержит материала, способного к аккумулированию кислорода (OSC), и где второй слой нанесен на первый ...

КАТАЛИЗАТОР И СПОСОБ РАЗЛОЖЕНИЯ МОНООКСИДА ДИАЗОТА И СПОСОБ И УСТРОЙСТВО ДЛЯ ПОЛУЧЕНИЯ АЗОТНОЙ КИСЛОТЫ

Изобретение относится к особому соединению перовскитного типа, катализатору, содержащему такое соединение перовскитного типа, способу разложения монооксида диазота (N2O), устройству для получения азотной кислоты и способу получения азотной кислоты. Изобретение относится также к применению указанного соединения перовскитного типа для разложения N2O. Описано устройство в способе получения азотной кислоты на стадии окисления аммиака, включающее соединение перовскитного типа, предназначенное для разложения монооксида диазота, общей формулы (1), при этом по ходу потока, содержащего продукт газа, расположены катализатор окисления аммиака, одна или несколько разделительных сеток и соединение перовскитного типа. Описан способ получения азотной кислоты с использованием данного устройства. Описан катализатор, для использования в данном устройстве, в состав которого входят носитель с сотовой структурой и соединение перовскитного типа общей формулы (1). Также описаны способ разложения монооксида диазота ...

ПОДЛОЖКА ФИЛЬТРА, СОДЕРЖАЩАЯ ЗОНАЛЬНО НАНЕСЕННОЕ ПОКРЫТИЕ ИЗ ПОРИСТОГО ОКСИДА С КАТАЛИЗАТОРОМ

Изобретение относится к каталитическому фильтру, предназначенному для отфильтровывания твердых частиц из отработавшего газа, выпускаемого из двигателя внутреннего сгорания с принудительным воспламенением топлива, а также системе выпуска отработавших газов, содержащей такой фильтр, и способу одновременной конверсии оксидов азота и твердых частиц. Фильтр содержит керамическую пористую подложку с проходящим через стенки потоком, имеющую общую длину и впускные каналы, частично ограниченные входными поверхностями керамических стенок, и выпускные каналы, частично ограниченные выходными поверхностями керамических стенок, при этом входные поверхности отделены от выходных поверхностей первой пористой структурой, содержащей поры с первым средним размером пор, причем пористая подложка частично покрыта композицией для покрытия из пористого оксида с катализатором, при этом вторая пористая структура имеющей покрытие из пористого оксида части пористой подложки содержит поры со вторым средним размером ...

НОСИТЕЛЬ РАЗМЕЩАЕМОГО ВБЛИЗИ ДВИГАТЕЛЯ КАТАЛИТИЧЕСКОГО НЕЙТРАЛИЗАТОРА, КАТАЛИТИЧЕСКИЙ НЕЙТРАЛИЗАТОР С ТАКИМ НОСИТЕЛЕМ, СИСТЕМА ВЫПУСКА ОТРАБОТАВШИХ ГАЗОВ И АВТОМОБИЛЬ

Носитель каталитического нейтрализатора, пригодный для применения в системе выпуска отработавших газов вблизи двигателя внутреннего сгорания, имеет множество проходящих рядом друг с другом от его входной стороны до его выходной стороны проточных для ОГ каналов и средства для поддержания либо создания турбулентности в потоке ОГ, проходящем через указанные каналы, причем носитель изготовлен из по меньшей мере одной фольги, условный предел Rp0,2 текучести которой при температуре 900°С составляет по меньшей мере 50 Н/мм2. Даны: соответствующий каталитический нейтрализатор, соответствующая система выпуска ОГ и автомобиль с системой выпуска. Такое выполнение позволяет повысить эффективность и долговечность устройства для нейтрализации и снижения токсичности ОГ, подвергающегося воздействию высоких термических и динамических нагрузок. 4 н. и 10 з.п. ф-лы, 4 ил.

УЛУЧШЕННАЯ ЛОВУШКА NOХ

Изобретение относится к ловушке NОх для выхлопных систем двигателей внутреннего сгорания и к способу очистки выхлопного газа из двигателя внутреннего сгорания. Катализатор-ловушка NОх содержит подложку, первый слой и второй слой. Первый слой содержит композицию ловушки NОх, содержащую один или несколько благородных металлов, компонент для сохранения NОх, первый носитель и первый церийсодержащий материал, где первый церийсодержащий материал предварительно выдерживают перед внедрением в первый слой. Второй слой содержит родий, второй церийсодержащий материал и второй носитель, где второй церийсодержащий материал не выдерживают перед внедрением во второй слой. Изобретение также включает в себя выхлопные системы, содержащие данный катализатор-ловушку NОх и способ очистки выхлопного газа, использующий данный катализатор-ловушку NОх. Техническим результатом изобретения является повышение качества системы очистки выхлопных газов. 5 н. и 21 з.п. ф-лы, 1 табл.

СОДЕРЖАЩИЙ СПЛАВ КАТАЛИЗАТОР, СПОСОБ ИЗГОТОВЛЕНИЯ И ИСПОЛЬЗОВАНИЯ

Изобретение относится к способу получения катализатора на подложке, содержащего сплав платины и палладия, который пригоден для использования в качестве катализаторов окисления в каталитических конвертерах, установленных на транспортных средствах с дизельным двигателем. Способ изготовления катализатора на подложке включает следующие стадии: (i) объединение материала подложки в виде частиц, содержащего оксид алюминия, раствора соединения платины, раствора соединения палладия и раствора щелочного осаждающего агента с образованием суспензионной смеси; (ii) перемешивание полученной смеси; и (iii) приведение твердой фазы в контакт с восстановителем, где восстановитель содержит гидразин. Предложен также способ изготовления катализируемого субстрата, который включает следующие стадии: (i) получение катализатора на подложке с использованием указанного выше способа; (ii) отделение и промывка полученного катализатора на подложке; (iii) приготовление покрытия из пористого оксида путем создания суспензии ...

КАЛИБРОВАННЫЙ НОСИТЕЛЬ КАТАЛИТИЧЕСКОГО НЕЙТРАЛИЗАТОРА С ГОФРИРОВАННОЙ ВТУЛКОЙ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Изобретение может быть применено в системах впуска отработавших газов ДВС самоходных машин и транспортных средств. Способ изготовления носителя каталитического нейтрализатора, содержащего сотовый элемент, состоящий из множества по меньшей мере частично профилированных или структурированных слоев, образующих проточные для текучей среды каналы, кожух, который по меньшей мере частично охватывает сотовый элемент и по меньшей мере одну гофрированную втулку, расположенную между сотовым элементом и кожухом и соединяющую их между собой, заключается в том, что изготавливают сотовый элемент, который имеет наружный размер, который по меньшей мере частично определяется свободными концами слоев, изготавливают по меньшей мере одну гофрированную втулку с профильным контуром, изготавливают кожух с внутренним контуром, сотовый элемент помещают по меньшей мере в одну гофрированную втулку, по меньшей мере одну гофрированную втулку вместе с находящимся в ней сотовым элементом помещают в кожух и кожух подвергают ...

СПОСОБ ИЗГОТОВЛЕНИЯ СОТОВОГО ЭЛЕМЕНТА ИЗ МЕТАЛЛИЧЕСКИХ ЛИСТОВ, ИМЕЮЩИХ ПО МЕНЬШЕЙ МЕРЕ ЧАСТИЧНО МНОГОСЛОЙНУЮ СТРУКТУРУ

Изобретение предназначено для изготовления сотовых элементов, применяемых, как правило, в качестве корпусов-носителей каталитических нейтрализаторов. Способ изготовления сотового элемента, в котором набирают в пакет и/или свертывают в рулон металлические листы. По меньшей мере одна часть металлических листов выполнена из первоначально многослойного материала, который включает по меньшей мере один слой из содержащей хром стали и по меньшей мере один содержащий в основном алюминий слой, которые при последующей термической обработке в значительной мере гомогенизируются за счет диффузии. По меньшей мере часть металлических листов имеет структуру, повышающую упругость сотового элемента до и во время термической обработки. Сотовый элемент вставляют в трубчатый кожух с таким предварительным сжатием, при котором при термической обработке обеспечивается постоянное прилегание листов друг к другу в местах их контакта. За счет дополнительных микроструктур по меньшей мере на одной части металлических ...

ЭЛЕМЕНТ С СОТОВОЙ СТРУКТУРОЙ ИЗ ПОСЛОЙНО РАЗМЕЩЕННЫХ МЕТАЛЛИЧЕСКИХ ЛИСТОВ, ВЫПОЛНЕННЫХ ИЗ РАЗЛИЧНЫХ ПОЛУФАБРИКАТОВ

Изобретение относится к двигателестроению и может быть использовано для очистки отработанных газов двигателя внутреннего сгорания транспортного средства. Элемент с сотовой структурой каталитического реактора выполнен из попеременно чередующихся послойно размещенных гладких и структурированных листов, причем по крайней мере один слой листового металла выполнен из полуфабриката большей толщины по сравнению с остальными слоями. Все гладкие металлические листы имеют одинаковую толщину 0,04-0,06 мм, предпочтительно 0,05 мм. Все структурированные листы имеют одинаковую толщину 0,025-0,045 мм, предпочтительно 0,04 мм. Относительно друг друга гладкие и структурированные листы выполнены из полуфабрикатов разной толщины и/или обладающих разными свойствами. Все структурированные металлические листы выполнены более тонкими предпочтительно на 0,01 мм по сравнению с гладкими металлическими листами. Технический результат - изобретение возможно использовать в условиях, при которых отсутствуют нагрузки, ...

СПОСОБ ПРИГОТОВЛЕНИЯ КАТАЛИЗАТОРА ДЛЯ ПОЛУЧЕНИЯ СИНТЕЗ-ГАЗА ИЗ МЕТАНА, КАТАЛИЗАТОР, ПРИГОТОВЛЕННЫЙ ПО ЭТОМУ СПОСОБУ, И СПОСОБ ПОЛУЧЕНИЯ СИНТЕЗ-ГАЗА ИЗ МЕТАНА С ЕГО ИСПОЛЬЗОВАНИЕМ

Изобретение относится к технологии переработки газообразного углеводородного сырья. Описан способ приготовления катализатора для получения синтез-газа, который включает электрохимическую обработку в ионной жидкости бутилметилимидазолий ацетат BMIMAc и последующее нанесение методом электрохимического платинирования платины, при этом в качестве носителя используется пористый носитель в виде металлических волокон, спеченных и спрессованных в виде пористых листов нержавеющей стали. Катализатор для получения синтез-газа из метана представляет собой скрученные в спираль пористые листы нержавеющей стали с нанесенной на его поверхность металлической платиной и содержит платину в количестве 0,1-1 мас.%. Процесс получения синтез-газа из метана путем его окислительной конверсии проводят при атмосферном давлении в проточном реакторе при контактировании катализатора, нагретого до температуры 650-850°C, с метано-воздушной смесью с мольным соотношением О/СНв диапазоне 0,48-0,52 при объемной скорости подачи ...

КАТАЛИТИЧЕСКИЙ БЛОК И УСТРОЙСТВО ДЛЯ ОЧИСТКИ ГАЗА

Изобретение предназначено для очистки газа. Каталитический блок изготавливается путем поочередного укладывания в стопу прямоугольных каталитических элементов, сформированных путем отрезания каталитических поддерживающих пластин, покрытых каталитическим материалом и имеющих ребра, наклоненные под углом 45° к одному заданному боковому краю каждого из них, и повернутых верхней стороной вниз. Каталитический блок расположен в газовом канале так, что ребра каталитических элементов проходят под углом больше 0° и меньше 90° к направлению потока газа. Когда каталитический блок, содержащий каталитические элементы, покрытые денитрирующим катализатором, помещается в газовый канал, ребра каталитических элементов перегораживают поток газа и генерируют турбулентные потоки ниже по течению газа, чтобы способствовать контакту аммиака и содержащихся в отработанном газе окислов азота с катализатором. Когда поток газа возмущается, толщина ламинарных пленок, покрывающих поверхность каталитических элементов, ...

УСТРОЙСТВО И СПОСОБ ДЛЯ ИЗГОТОВЛЕНИЯ ЭЛЕМЕНТА С СОТОВОЙ СТРУКТУРОЙ, В ЧАСТНОСТИ КОРПУСА-НОСИТЕЛЯ КАТАЛИТИЧЕСКОГО НЕЙТРАЛИЗАТОРА

В заявке описано устройство для изготовления элемента с сотовой структурой, состоящего из множества набранных по меньшей мере в один пакет по меньшей мере частично структурированных слоев металлических листов, образующих множество каналов для прохождения текучей среды. Устройство включает поворачивающееся вокруг оси, действующее на каждый пакет вильчатое скручивающее приспособление и смыкающиеся в цельную форму профильные сегменты. Форма образована по меньшей мере двумя профильными сегментами. Каждый профильный сегмент может поворачиваться вокруг соответствующей оси, проходящей параллельно оси скручивающего приспособления, против направления поворота последнего, что позволяет предотвратить деформацию пакетов. 3 с. и 18 з.п. ф-лы, 19 ил.

СПОСОБ ЭКСПЛУАТАЦИИ УСТРОЙСТВА, ИМЕЮЩЕГО ПО МЕНЬШЕЙ МЕРЕ ОДИН ЭЛЕКТРОНАГРЕВАЕМЫЙ СОТОВЫЙ ЭЛЕМЕНТ

Изобретение относится к способу эксплуатации устройства, имеющего по меньшей мере один электронагревательный элемент, используемый для обработки отработавших газов (ОГ). Сущность изобретения: способ эксплуатации устройства, имеющего по меньшей мере один электронагреваемый и проточный для отработавших газов первый сотовый элемент с по меньшей мере одной токораспределительной структурой, на которую при включении перед подачей на нее постоянного греющего напряжения (22) для нагрева сотового элемента (2) сначала подают несколько коротких последовательных импульсов (21) напряжения. Также пригодное для осуществления подобного способа устройство. Техническим результатом изобретения является обеспечение эффективной защиты опорных элементов. 2 н. и 5 з.п. ф-лы, 3 ил.

КАТАЛИЗАТОР ОКИСЛЕНИЯ РТУТИ И СПОСОБ ЕГО ПРИГОТОВЛЕНИЯ

Настоящее изобретение относится к катализатору окисления ртути (варианты) и способу его приготовления (варианты). Описан катализатор окисления ртути в отходящем газе до водорастворимого соединения ртути, предотвращающий улетучивание МоО, который содержит: TiOв качестве носителя; VOи МоОв качестве активных компонентов, нанесенных на носитель, и по меньшей мере один из элементов, выбранных из группы, состоящей из W, Cu, Со, Ni, Zn и их соединений, в качестве компонента, предотвращающего улетучивание МоО, нанесенного на носитель. Описан катализатор, который не содержит пика МоОв рентгенодифракционных анализах. Описан способ приготовления катализатора, включающий стадии: приготовление раствора А катализаторного материала, содержащего МоОв качестве активного компонента и компонент, предотвращающий улетучивание МоО; нанесение компонентов из раствора на подложку, содержащую TiO- носитель, сушку и прокаливание. Предложен способ приготовления катализатора, предусматривающий нанесение на носитель ...

КОТАЛИТИЧЕСКИЙ ЭЛЕМЕНТ ДЛЯ КОНВЕРСИИ АММИАКА

Изобретение относится к сотовым каталитическим элементам для конверсии аммиака и может быть использовано в производствах азотной, синильной кислот, гидроксиламинсульфата в качестве катализатора второй ступени. Сущность изобретения заключается в том, что каталитический элемент выполнен в виде слоя из отдельных призм, соединенных боковыми гранями без зазоров, имеющий сотовые каналы. Новым является то, что диаметр основания призмы и ее высота составляют соответственно 4 - 100 и 2 - 75 эквивалентных диаметров сотового канала. Дополнительные отличия заключаются в том, что основание призмы имеет форму трех-, или четырех-, или шестиугольника, а также в том, что элемент выполнен из материала состава, %: Fe2O3 92; Cr2O3 8 или Fe2O3 89, 5; ZrO2 5; MgO 5; ZrBaO 0,5 или Fe2O3 79; Al2O3 20; MgO 1 или Fe2O3 79,7; Al2O3 20; V2 O5 0,3 или перовскит (СаO•1LaO•9MnO3) 90; Al2O3 8; SiO2 2. Технический результат состоит в увеличении термической прочности и срока службы катализатора. 2 з.п.ф-лы, 8 ил.

СПОСОБ ГЛУБОКОГО ОКИСЛЕНИЯ ОРГАНИЧЕСКИХ СОЕДИНЕНИЙ

Изобретение относится к области химии и экологии, а именно глубокому окислению органических соединений, которое может быть применено к процессам очистки и обезвреживания газообразных и жидких выбросов, для дожига вредных органических соединений, в том числе летучих, галогенсодержащих и т.п., в отходящих газах. Описан способ глубокого окисления органических соединений, включающий пропускание через слой катализатора потока, содержащего органическое соединение и окислитель, разбавленного инертным газом, отличающийся тем, что в качестве катализатора используют геометрически структурированную систему, включающую микроволокна высококремнеземистого носителя диаметром 5-20 мкм, который характеризуется наличием в инфракрасном спектре полосы поглощения гидроксильных групп с волновым числом ν=3620-3650 сми полушириной 65-75 сми имеет гелеобразный поверхностный слой толщиной от 1 до 500 нм, который характеризуется вязкостью 3000-30000 сП и удельной поверхностью, измеренной методом БЭТ по тепловой десорбции ...

КАТАЛИТИЧЕСКИЙ ПРЕОБРАЗОВАТЕЛЬ ОТРАБОТАВШИХ ГАЗОВ ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ МАЛОЙ МОЩНОСТИ И СПОСОБ ИЗГОТОВЛЕНИЯ КАТАЛИТИЧЕСКОГО ПРЕОБРАЗОВАТЕЛЯ

Для сокращения производственных расходов на изготовление преобразователя в расположенном вблизи ДВС малой мощности корпусе глушителя размещен сотовый элемент, который имеет покрытие из каталитически активного материала и состоит из слоев по меньшей мере частично структурированных металлических листов, образующих проточные каналы для прохождения, при этом указанный сотовый элемент расположен таким образом, чтобы обеспечить принудительное прохождение через него по меньшей мере подавляющей части отработавших газов, образующихся при работе этого ДВС малой мощности, причем такой сотовый элемент образован пакетом уложенных слоями, свернутых в рулон или сфальцованных металлических листов, который при установке в корпус глушителя таким образом обжат при одновременной пластической деформации по меньшей мере 10%, предпочтительно 20-30% каналов, что сотовый элемент полностью заполняет собой по меньшей мере часть объема этого корпуса. За счет значительной пластической деформации части каналов в остальном ...

СОТОВЫЙ ЭЛЕМЕНТ

Изобретение касается сотового элемента 1, через который вдоль оси протекает текучая среда, минуя множество каналов 3 в сотовом элементе 1. Сотовый элемент 1 имеет по меньшей мере два диска 4, 5, размещенных на расстоянии друг от друга и расположенных друг за другом вдоль оси 2, из которых каждый имеет каналы 3. В соответствии с изобретением предусмотрен по меньшей мере один кронштейн 6, 7, 61, 61, 63, размещенный вблизи оси, с помощью которого диски 4, 5 соединяются между собой и опираются друг на друга. Изобретение позволяет выполнить первый диск 4 таким образом, чтобы производился быстрый нагрев его за счет проходящего обработанного газа или за счет проводимого электрического тока и/или была гарантирована механическая прочность сотового элемента 1 за счет соответствующего исполнения второго диска 5 и кронштейна 6, 7, 61, 62, 63. Выполненный согласно изобретению сотовый элемент 1 особенно хорошо подходит для использования в качестве носителя для катализатора в системе отвода отработавших ...

ЭЛЕКТРОПРОВОДЯЩАЯ ЯЧЕИСТАЯ КОНСТРУКЦИЯ НОСИТЕЛЯ КАТАЛИЗАТОРА ДЛЯ ВЫХЛОПНЫХ ГАЗОВ И СПОСОБ КОНТРОЛЯ ПРИ ЭКСПЛУАТАЦИИ ЭЛЕКТРОПРОВОДЯЩЕЙ ЯЧЕИСТОЙ КОНСТРУКЦИИ НОСИТЕЛЯ КАТАЛИЗАТОРА

Использование: двигатели внутреннего сгорания, устройства для каталитической очистки отработавших газов. Сущность изобретения: электропроводящая ячеистая конструкция носителя катализатора для выхлопных газов выполнена в виде электропроводящих ячеистых блоков, установленных в корпусе и образованных слоями частично или полностью структуированных плоского и гофрированного листов фольги, намотанных с образованием газовых каналов и размещенных в виде пакета со слоями, намотанными навстречу один другому с поперечным сечением в форме круга или в форме меандра, листы фольги выполнены толщиной, составляющей 0,03 - 0,12 мм, предпочтительно 0,03 - 0,06 мм. Блоки установлены с зазором один относительно другого, могут быть снабжены радиальными и/или аксиальными электроизолирующими прокладками или покрытиями, расположенными по поверхности поперечного сечения и/или вдоль оси блока с образованием электропроводящих по длине участков с электрическим сопротивлением, составляющим 0,03 - 2,0 Ом, преимущественно ...

КАТАЛИТИЧЕСКИЙ КОНВЕРТЕР С ЭЛЕКТРИЧЕСКИМ НАГРЕВОМ

Использование: преобразование отработанных газов двигателей. Сущность изобретения: каталитический конвертер с электрическим нагревом содержит расположенные последовательно в направлении потока отдельные участки с различной осевой длиной и различным электрическим сопротивлением. Нагреваемые отдельные участки разделены запертым для электрического тока участком элемента с сотовой структурой. При запуске двигателя холодные выхлопные газы поступают на электронагреваемый участок, подвергаются экзотермическому каталитическому преобразованию на электрически запертом участке. Температура газов падает, но остается выше необходимой для каталитического преобразования (300oC), а на следующем электронагреваемом участке вновь повышается до 500oC, после чего в форкатализаторе температура газов понижается до 300oC. Каталитическое преобразование выхлопных газов происходит по всей длине конвертера с изменением температуры на отдельных участках, но всегда температура выхлопных газов выше необходимой для каталитического ...

КАТАЛИТИЧЕСКИЙ РЕАКТОР С ДВУМЯ ИЛИ БОЛЕЕ ЭЛЕМЕНТАМИ С СОТОВОЙ СТРУКТУРОЙ В ОДНОМ ТРУБООБРАЗНОМ КОЖУХЕ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Использование: очистка отработанных газов двигателей внутреннего сгорания преимущественно на транспортных средствах. Сущность изобретения: каталитический реактор состоит из трубообразного кожуха, в которой вставлено два отдельных элемента с сотовой структурой из листьев со структурированными слоями. Для обеспечения экономичного изготовления в крупносерийном производстве применяют упругие элементы с сотовой структурой, вставленные с предварительным натяжением в трубообразный кожух. Предварительное натяжение достигается путем упругого сжатия элементов с сотовой структурой на величину, составляющую от 2 до 10% их теоретического, без внутренних напряжений диаметра, причем их упруго сжимают перед вводом в трубообразный кожух и/или трубообразный кожух пластически сжимают после введения элементов с сотовой структурой. Такие элементы остаются благодаря их предварительному натяжению стабильными и во время механических нагрузок при ускоренных процессах изготовления, и пригодны для пайки в вертикальном ...

СПОСОБ АММИАЧНОГО ОКИСЛЕНИЯ АЛКАНОВ

Использование: в производстве синтетического волокна. Сущность изобретения: усовершенствованный способ аммиачного окисления алканов. Реагент 1: алкан. Реагент 2: NH3, О2. Условия реакции: паровая фаза, температура 350 - 550oС, общее давление 1 - 6 бар, объемная скорость газовой смеси 100 - 36000 ч-1 , в присутствии инертного газового разбавителя и твердого катализатора, активная фаза которого содержит, по меньшей мере, один элемент, но не более двух, выбираемый из группы, состоящей из Mg, Ca, Mn, Fe, U, La, Co. 11 з. п. ф-лы, 2 ил., 19 табл.

КОНСТРУКЦИЯ КАТАЛИЗАТОРА С ЦЕЛЬНЫМИ ТЕПЛООБМЕННЫМИ ПОВЕРХНОСТЯМИ

Изобретение относится к конструкции катализатора, имеющего цельные теплообменные поверхности. Конструкция катализатора включает металлический носитель, имеющий проходы для горючих газов. На часть внутренних поверхностей проходов нанесен каталитический материал для теплообмена поверхностей, покрытых каталитическим материалом с внутренними поверхностями, не покрытыми каталитическим материалом. Носитель катализатора дополнительно включает тонкослойное покрытие. 2 с. и 38 з.п. ф-лы, 9 ил., 2 табл.

ОЧИЩАЮЩИЙ ОТ ДИСПЕРСНЫХ ЧАСТИЦ МАТЕРИАЛ, ФИЛЬТР-КАТАЛИЗАТОР ДЛЯ ОЧИСТКИ ОТ ДИСПЕРСНЫХ ЧАСТИЦ С ИСПОЛЬЗОВАНИЕМ ОЧИЩАЮЩЕГО ОТ ДИСПЕРСНЫХ ЧАСТИЦ МАТЕРИАЛА И СПОСОБ РЕГЕНЕРИРОВАНИЯ ФИЛЬТРА-КАТАЛИЗАТОРА ДЛЯ ОЧИСТКИ ОТ ДИСПЕРСНЫХ ЧАСТИЦ

Изобретение относится к очищающему от дисперсных частиц материалу и его использованию. Описан очищающий от дисперсных частиц материал, используемый для фильтра-катализатора для очистки от дисперсных частиц, причем фильтр-катализатор расположен на пути потока выхлопных газов двигателя внутреннего сгорания, улавливает дисперсные частицы в выхлопных газах, образующихся в двигателе внутреннего сгорания, и сжигает осаждаемые дисперсные частицы с тем, чтобы регенерироваться, причем очищающий от дисперсных частиц материал включает в себя: оксид, содержащий: церий (Се), обладающий способностью аккумулирования-высвобождения кислорода; и по меньшей мере один металл (Me), выбранный из группы, состоящей из циркония (Zr), иттрия (Y), лантана (La), празеодима (Рr), стронция (Sr), ниобия (Nb) и неодима (Nd), при этом отношение содержаний (Се:Ме) церия к металлу составляет от 6:4 до 9:1 в единицах атомного отношения, и степень кристалличности (CR), представленная следующей формулой (1), составляет в пределах ...

ЭКСТРУДИРОВАННЫЙ SCR-ФИЛЬТР

Изобретение относится к области очистки газов. Предложен фильтр с протеканием через стенки, содержащий катализатор для преобразования оксидов азота в присутствии восстанавливающего агента. Фильтр содержит экструдированную твердую массу, содержащую: 10-95% масс., по меньшей мере, одного компонента связующего вещества/матрицы; 5-90% масс. цеолитного молекулярного сита, нецеолитного молекулярного сита или смеси любых двух или более из них и 0-80% масс. необязательно стабилизированного оксида церия. Катализатор содержит, по меньшей мере, один металл, где: (i) по меньшей мере, один металл присутствует в экструдированной твердой массе, а также присутствует при более высокой концентрации на поверхности экструдированной твердой массы; (ii) по меньшей мере, один металл присутствует в экструдированной твердой массе, а также, его наносят в виде одного или нескольких слоев покрытия на поверхность экструдированной твердой массы, или (iii) по меньшей мере, один металл присутствует в экструдированной ...

КАТАЛИЗАТОР ОТРАБОТАВШИХ ГАЗОВ

Изобретение относится к катализатору для очистки отработавших газов, выпускаемых из двигателя внутреннего сгорания. Катализатор включает основной материал со множеством внутренних поверхностей стенок, сформированных множеством сквозных отверстий. Каждое из сквозных отверстий имеет центральную ось. Отверстия проходят сквозь основной материал от первой торцевой поверхности ко второй торцевой поверхности. На множестве внутренних поверхностей стенок сформировано множество каталитических слоев. Каждый из каталитических слоев подразделяется на первую область, пролегающую от первой торцевой поверхности ко второй торцевой поверхности на заданное расстояние, вторую область, пролегающую от второй торцевой поверхности к первой торцевой поверхности на заданное расстояние и третью область, расположенную между первой и второй областями. Каталитический слой сформирован таким образом, что расстояние (h1) от центральной оси сквозного отверстия до внутренней поверхности каталитического слоя в первой области ...

ФОЛЬГА ИЗ НЕРЖАВЕЮЩЕЙ СТАЛИ И НОСИТЕЛЬ КАТАЛИЗАТОРА ДЛЯ УСТРОЙСТВА ОЧИСТКИ ВЫХЛОПНОГО ГАЗА, ИСПОЛЬЗУЮЩИЙ ЭТУ ФОЛЬГУ

Изобретение относится к области металлургии, а именно к фольге из нержавеющей стали, используемой в носителе катализатора устройства очистки выхлопного газа автомобиля. Фольга выполнена из нержавеющей стали, содержащей, в мас.%: 0,05 или меньше С, 2,0 или меньше Si, 1,0 или меньше Мn, 0,003 или меньше S, 0,05 или меньше Р, 25,0 - 35,0 Сr, 0,05 - 0,30 Ni, 3,0 - 10,0 Аl, 0,10 или меньше N, 0,02 или меньше Ti, 0,02 или меньше Nb, 0,02 или меньше Та, 0,005 - 0,20 Zr, 0,02 или меньше Се, 0,03 - 0,20 РЗЭ (редкоземельного элемента), исключая Се, 0,5 - 6,0 в сумме по меньшей мере одного из Мо и W, Fe и случайные примеси остальное. Стальная фольга имеет высокую прочность при высоких температурах, превосходную стойкость к окислению при высоких температурах и превосходную стойкость к солевой коррозии. 2 н. и 5 з.п.ф-лы, 4 ил., 2 табл., 1 пр.

СПОСОБ И УСТРОЙСТВО ДЛЯ НАНЕСЕНИЯ ПОКРЫТИЯ НА КОНЦЕВУЮ ПОВЕРХНОСТЬ МОНОЛИТНОЙ ПОДЛОЖКИ НЕЙТРАЛИЗАТОРА

Изобретение относится к способу нанесения покрытия на концевую поверхность монолитной подложки нейтрализатора для использования в устройстве снижения токсичности выбросов. В способе покрытия концевой поверхности монолитной подложки (10) жидкостью (2), содержащей каталитический компонент, транспортируют монолитную подложку к покрывающему валику (1), наносят жидкость (2), содержащую каталитический компонент, на концевую поверхность монолитной подложки (10) за счет контактирования концевой поверхности с покрывающим валиком (1), насыщенным жидкостью для получения монолитной подложки (10), имеющей концевую поверхность, покрытую жидкостью (2). После этого сушат монолитную подложку (10), имеющую концевую поверхность, покрытую жидкостью (2), и затем прокаливают монолитную подложку (10). Техническим результатом изобретения является обеспечение возможности автоматизированно и равномерно покрывать жидкостью концевую поверхность монолитной подложки нейтрализатора и точного управления количеством жидкости ...

Катализатор защитного слоя для реакторов гидрогенизационной переработки нефтяного сырья и способ его получения

Изобретение относится к нефтеперерабатывающей промышленности, в частности к катализаторам гидрогенизационной переработки нефтяных фракций и способам их получения. Описан катализатор защитного слоя для реакторов гидрогенизационной переработки нефтяного сырья на высокопористом ячеистом носителе, содержащего активные компоненты, который отличается тем, что включает привитый слой γ-оксида алюминия в количестве до 2,3-9% масс., имеющий мезопоры диаметром 3-7 нм и макропоры диаметром 800-2000 нм, содержащий в качестве активных компонентов молибден или вольфрам в виде фосфорно-молибденовой или фосфорно-вольфрамовой кислот в количестве 1,00-3,00% масс. в пересчете на оксиды, а также никель или кобальт в виде цитратов в количестве 0,35-1,05% масс. в пересчете на оксиды, катализатор имеет форму цилиндров диаметром 20-50 мм, высотой 10-30 мм с размером ячеек 0,8-2,5 мм. Также разработан способ получения катализатора. Технический результат - разработанный катализатор защитного слоя для реакторов гидрогенизационной ...

ЖЕЛЕЗО-ХРОМО-АЛЮМИНИЕВЫЙ СПЛАВ

... 1. Железо-хромо-алюминиевый сплав с высокой долговечностью, содержащий, мас.%: 4-8 Al, 16-24 Cr, добавки 0,05-1 Si, 0,001-0,5 Mn, 0,02-0,2 Y, 0, 1-0,3 Zr или 0,1-0,3 Zr и 0,02-0,2 Hf, 0,003-0,05 С, 0,0002-0,05 Mg, 0,0002-0,05 Ca, макс. 0,04 N, макс. 0,04 Р, макс. 0,01 S, макс. 0,5 Cu и обычные, обусловленные плавкой примеси, остальное железо, причем Hf может быть заменен одним или несколькими из элементов Sc, Ti, V, Nb, Та или Се. 2. Сплав по п.1, содержащий, мас.%: 5-6 Al, 18-22 Cr, добавки 0,05-0,7 Si, 0,001-0,4 Mn, 0,03-0, 1 Y, 0,15-0,25 Zr или 0,15-0,25 Zr и 0,02-0,15 Hf, 0,003-0,03 С, 0,0002-0,03 Mg, 0,0002-0,03 Ca, макс. 0,04 N, макс. 0,04 Р, макс. 0,01 S, макс. 0,5 Cu и обычные, обусловленные плавкой примеси, остальное железо. 3. Сплав по п.1 или 2, содержащий, мас.%: 5-6 Al, 18-22 Cr, добавки 0,05-0,7 Si, 0,001-0,4 Mn, 0,03-0,08 Y, 0,15-0,25 Zr или 0,15-0,25 Zr и 0,03-0,11 Hf, 0,003-0,025 С, 0,0002-0,01 Mg, 0,0002-0,01 Ca, макс. 0,04 N, макс. 0,04 Р, макс. 0,01 S, макс. 0,5 Cu и ...

СТРУКТУРА КАТАЛИЗАТОРА

... 1. Способ синтеза углеводородов в трехфазном реакторе, включающий следующие стадии: (i) введение синтез-газа в реактор; (ii) приведение в контакт синтез-газа с катализатором Фишера-Тропша; и (iii) удаление продуктов из реактора, где стадия (i) включает введение части или всего синтез-газа в реактор в или вблизи к нижней части реактора; и стадия (ii) включает контактирование реагентов синтез-газа с каталитической структурой неподвижной внутри реактора, где каталитическая структура включает один или более пористых каталитических элементов, закрепляемых внутри реактора, каждый из указанных пористых каталитических элементов имеет размер, по крайней мере, 1 см3, предпочтительно 10 см3, и где объем пор внутри каждого пористого каталитического элемента составляет, по крайней мере, 60% по сравнению с объемом пористых каталитических элементов и каждый пористый каталитический элемент включает материал катализатора Фишера-Тропша, в котором указанный пористый элемент или каждый пористый элемент катализатора ...

КОМПОЗИТЫ КАТАЛИЗАТОРОВ ОКИСЛЕНИЯ ДИЗЕЛЬНОГО ТОПЛИВА

... 1. Композит катализатора окисления для снижения выбросов отработавшего газа двигателя, работающего на обедненных смесях, содержащий:подложку носителя, которая имеет протяженность, входной конец и выходной конец, каталитический материал катализатора окисления на подложке, при этом каталитический материал катализатора окисления включает нижний слой покрытия из пористого оксида и верхний слой покрытия из пористого оксида;при этом нижний слой покрытия из пористого оксида включает подложку из тугоплавкого оксида металла, платиновый (Pt) компонент и палладиевый (Pd) компонент в массовом соотношении Pt к Pd в диапазоне, который составляет приблизительно 4:1-1:4; иверхний слой покрытия из пористого оксида включает цеолит, Pt и подложку из тугоплавкого оксида металла, верхний слой покрытия из пористого оксида в основном не содержит палладий, при этом композит катализатора окисления является эффективным для уменьшения углеводорода и монооксида углерода, и окисляет NO до NOв выхлопных газах двигателя ...

КАТАЛИТИЧЕСКИЕ СМЕСИ

... 1. Композиция катализатора, включающая в себя смесь алюмосиликатного молекулярного сита с каркасом СНА и кремнийалюмофосфатного молекулярного сита с каркасом СНА, в которойа. алюмосиликатное молекулярное сито и кремнийалюмофосфатное молекулярное сито присутствуют в молярном соотношении алюмосиликат:кремнийалюмофосфат от около 0,8:1,0 до около 1,2:1,0, иb. указанное алюмосиликатное молекулярное сито включает в себя первый внерешеточный металл, указанное кремнийалюмофосфатное молекулярное сито включает в себя второй внерешеточный металл, где указанные первый и второй внерешеточные металлы независимо выбирают из группы, включающей в себя цезий, медь, никель, цинк, железо, олово, вольфрам, молибден, кобальт, висмут, титан, цирконий, сурьму, марганец, хром, ванадий, ниобий и их сочетания, где указанный первый внерешеточный металл присутствует в количестве от около 2 до около 4 массовых процентов, из расчета на массу алюмосиликата, и где массовое соотношение указанного первого внерешеточного ...

СИСТЕМА НЕЙТРАЛИЗАЦИИ ВРЕДНЫХ ВЫБРОСОВ ДЛЯ ТРАНСПОРТНЫХ СРЕДСТВ С БЕНЗИНОВЫМИ ДВИГАТЕЛЯМИ

... 1. Система нейтрализации отработавших газов для бензиновых двигателей, содержащая расположенный вблизи двигателя трехкомпонентный каталитический нейтрализатор (ТКН) отработавших газов и расположенный за ним по потоку отработавших газов каталитический фильтр твердых частиц для бензиновых двигателей (ФТЧ-БД), имеющий проницаемые стенки, причем количество металлов платиновой группы в ТКН по меньшей мере в пять раз превышает количество металлов платиновой группы в ФТЧ-БД.2. Система по п. 1, в которой оба нейтрализующих отработавшие газы устройства содержат в качестве металлов платиновой группы палладий и родий.3. Система по п. 1 или 2, в которой расположенный первым по потоку отработавших газов ТКН находится на расстоянии примерно от 5 до 30 см от выпускного отверстия двигателя, выходного отверстия выпускного коллектора или турбонагнетателя по потоку отработавших газов.4. Система по п. 1 или 2, в которой расположенный вторым по потоку отработавших газов ФТЧ-БД находится на расстоянии примерно ...

ПОКРЫТИЕ ДЛЯ ВОССТАНОВЛЕНИЯ ОКСИДОВ АЗОТА

... 1. Каталитическое покрытие для применения в качестве гидролитического катализатора (Г-катализатора) для восстановления оксидов азота, отличающееся тем, что в качестве соединения, адсорбирующего HNCO и оксиды азота, Г-катализатор содержит лантан и дополнительно содержит одно или несколько соединений, являющееся или являющихся щелочным и/или щелочно-земельным металлом, и/или иттрием, и/или гафнием, и/или празеодимом, и/или галлием, и/или цирконием.2. Каталитическое покрытие по п. 1, отличающееся тем, что Г-катализатор содержит каталитическое покрытие на основе диоксида титана, предпочтительно в форме анатаза, на основе SiO, на основе цеолита, предпочтительно ZSM-5 и/или в бета форме, и/или на основе двуокиси циркония.3. Каталитическое покрытие по п. 1 или 2, отличающееся тем, что Г-катализатор содержит восстановитель, являющийся мочевиной и/или восстановитель, включающий NHгруппу (i=1-4).4. Каталитическое покрытие по п. 1, отличающееся тем, что Г-катализатор содержит соединение, адсорбирующее ...

МОНОЛИТНАЯ ПОДЛОЖКА С КАТАЛИЗАТОРОМ SCR

... 1. Монолитная подложка, имеющая длину L и включающая первую зону, по существу, постоянной длины, ограничиваемую на одном конце первым концом монолитной подложки, при этом, первая зона содержит катализатор селективного каталитического восстановления (SCR), предназначенный для восстановления оксидов азота азотистым восстановителем в выхлопном газе, выбрасываемом двигателем внутреннего сгорания, и вторую зону, по существу, постоянной длины, меньше L, ограничиваемую на одном конце вторым концом монолитной подложки, при этом, вторая зона содержит (а) по меньшей мере, один оксид металла в форме частиц или смесь любых двух или более оксидов металлов, предназначенных для улавливания газофазного металла платиновой группы (PGM), при этом указанный, по меньшей мере, один оксид металла в форме частиц не выполняет функцию подложки для какого-либо другого каталитического компонента; или (b) компонент, способный улавливать и/или сплавляться с газофазным PGM.2. Монолитная подложка по п. 1, в которой, по ...

УСТРОЙСТВО И СПОСОБ ДЕКОДИРОВАНИЯ ДАННЫХ ДЛЯ ОБЕСПЕЧЕНИЯ ПРОЛИСТЫВАЕМОГО СЛАЙД-ШОУ, И ЗАПОМИНАЮЩИЙ ДАННЫЕ НОСИТЕЛЬ ДЛЯ НИХ

... 1. Декодирующее устройство для обеспечения слайд-шоу с возможностью пролистывания, содержащее декодер основного потока для декодирования пакетных данных основного потока; декодер суб-аудио для декодирования пакетных суб-аудиоданных; счетчик системной временной синхронизации основного потока для обеспечения последовательности системной временной синхронизации, которая управляет временем декодирования пакетных данных основного потока декодером основного потока; и счетчик суб-аудио системной временной синхронизации для обеспечения последовательности системной временной синхронизации, которая управляет временем декодирования пакетных суб-аудиоданных декодером суб-аудио. 2. Декодирующее устройство по п.1, в котором пакетные данные основного потока содержат данные изображения для воспроизведения при слайд-шоу с возможностью пролистывания. 3. Декодирующее устройство по п.2, в котором пакетные суб-аудиоданные содержат аудиоданные, прикрепленные к данным изображения. 4. Декодирующее устройство по ...

ЗОНИРОВАННЫЙ КАТАЛИТИЧЕСКИЙ НЕЙТРАЛИЗАТОР ДЛЯ СНИЖЕНИЯ ВЫБРОСОВ N2O

УСТРОЙСТВО С ПО МЕНЬШЕЙ МЕРЕ ОДНИМ ФОРМООБРАЗУЮЩИМ СЕГМЕНТОМ ДЛЯ ИЗГОТОВЛЕНИЯ МЕТАЛЛИЧЕСКИХ СОТОВЫХ ЭЛЕМЕНТОВ И СПОСОБ ИЗГОТОВЛЕНИЯ МЕТАЛЛИЧЕСКИХ СОТОВЫХ ЭЛЕМЕНТОВ

... 1. Устройство (1) для свертывания по меньшей мере частично профилированных листов фольги в сотовую структуру (2), имеющее по меньшей мере следующие компоненты: по меньшей мере одну скручивающую оправку (3), расположенную в центральной части (4) устройства (1) и имеющую зажим (5) для по меньшей мере одного листа фольги, и по меньшей мере один формообразующий сегмент (6) с по меньшей мере одним направляющим элементом (7), который служит для обеспечения направленного перемещения по меньшей мере одного листа фольги в процессе его свертывания и выполнен с по меньшей мере одним роликом (9) и по меньшей мере одной поворотной зажимной колодкой (8). ! 2. Устройство (1) по п.1, в котором по меньшей мере один формообразующий сегмент (6) выполнен перемещаемым относительно по меньшей мере одной скручивающей оправки (3). ! 3. Устройство (1) по п.1 или 2, в котором по меньшей мере один формообразующий сегмент (6) выполнен с примыкающими друг к другу направляющим элементом (7) и зажимной колодкой (8).

УЛУЧШЕННЫЙ КАТАЛИЗАТОР ИЗБИРАТЕЛЬНОГО ОКИСЛЕНИЯ, СОДЕРЖАЩИЙ ПЛАТИНУ, МЕДЬ И ЖЕЛЕЗО

... 1. Катализатор, пригодный в качестве катализатора избирательного окисления, содержащий носитель, пропитанный каталитическими металлами: платиной, медью и железом, причем упомянутая платина присутствует на носителе в количестве 1-5% по массе, упомянутая медь присутствует на носителе в количестве 2-12% по массе, а упомянутое железо присутствует на носителе в количестве 0,10-2% по массе. ! 2. Катализатор, пригодный в качестве катализатора избирательного окисления, по п.1, в котором упомянутая платина присутствует в количестве 1-3%, упомянутая медь присутствует в количестве 4-8%, а упомянутое железо присутствует на носителе в количестве 0,2-1,0% по массе. ! 3. Катализатор, пригодный в качестве катализатора избирательного окисления, по п.1, в котором упомянутая платина присутствует в количестве примерно 2%, упомянутая медь присутствует в количестве примерно 8%, а упомянутое железо присутствует в количестве 0,10-1,5% по массе. ! 4. Катализатор, пригодный в качестве катализатора избирательного ...

ПАССИВНЫЙ АДСОРБЕНТ NOx, СОДЕРЖАЩИЙ БЛАГОРОДНЫЙ МЕТАЛЛ И МЕЛКОПОРИСТОЕ МОЛЕКУЛЯРНОЕ СИТО

Изобретение относится к очистке выхлопных газов. Предложен пассивный адсорбент NO, эффективный для адсорбции NOпри температуре 200°С или ниже и для высвобождения адсорбированного NOпри температурах выше указанной температуры. Заявленные пассивный адсорбент NOсодержит благородный металл и мелкопористое молекулярное сито, имеющее максимальный размер кольца в восемь тетраэдрических атомов. Предложена также выхлопная система двигателя внутреннего сгорания и способ снижения содержания оксидов азота в выхлопном газе. Изобретение обеспечивает эффективную очистку от оксидов азота. 3 н. и 11 з.п. ф-лы, 4 табл., 5 пр.

УСТРОЙСТВО УПРАВЛЕНИЯ ВЫБРОСОМ ОТРАБОТАВШИХ ГАЗОВ ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к области очистки отработанных газов двигателя внутреннего сгорания. Устройство управления выбросом отработавших газов для двигателя включает в себя электронный блок управления (ECU). ECU может выполнять управление для удаления твердых частиц посредством управления двигателем так, что температура сажевого фильтра повышается до заданной температуры удаления PM для того, чтобы уменьшать количество твердых частиц, накопившихся в сажевом фильтре; и когда ECU определяет, что количество твердых частиц, накопившихся в сажевом фильтре, меньше или равно заданной установленной величине накопления, выполнять управление для десорбции золы посредством управления двигателем так, что температура сажевого фильтра увеличивается до заданной температуры десорбции золы и поддерживается равной температуре десорбции золы или выше для того, чтобы уменьшать количество золы, осевшей в сажевом фильтре. Температура десорбции золы является температурой, подходящей для преобразования золы в оксид ...

УСТРОЙСТВО И СПОСОБ ИЗГОТОВЛЕНИЯ СОТОВОЙ СТРУКТУРЫ

... 1. Устройство для изготовления сотовой структуры,содержащее:формовочную пресс-форму (1) с некоторым количеством субформ, которые являются подвижными, так что они могут открываться и закрываться;обжимную пресс-форму (6) для сжатия указанной формовочной пресс-формы (1);вращающийся стержень(и) (2), который может быть вставлен и удален из внутренней полости указанной формовочной пресс-формы (1), и может вращаться вокруг оси вращения;отличающееся тем, что,указанная обжимная пресс-форма (6) имеет форму, которая взаимодействует с формой указанной формовочной пресс-формы (1), так что действие указанной обжимной пресс-формы (6) приводит к сжатию указанной формовочной пресс-формы (1).2. Устройство по п. 1, отличающееся тем, что обжимная пресс-форма (6) имеет коническую внутреннюю поверхность, которая взаимодействует с конической наружной поверхностью указанной формовочной пресс-формы (1), и указанная обжимная пресс-форма (6) может перемещаться в осевом направлении.3. Устройство по п. 1 или 2, отличающееся ...

РЕАКЦИОННАЯ ТРУБА И СПОСОБ ПОЛУЧЕНИЯ ЦИАНИСТОГО ВОДОРОДА

Состав и способ приготовления катализатора гидрирования диолефинов

Изобретение относится к нефтеперерабатывающей промышленности, в частности к катализаторам гидрооблагораживания нефтяных фракций, а именно, к катализаторам защитного слоя для гидрирования диолефинов и к способам их приготовления. Предлагается катализатор гидрирования диолефинов для использования в составе защитного слоя в процессе гидрооблагораживания нефтяных дистиллятов, состоящий из модифицированного носителя, приготовленного на основе высокопористого ячеистого материала с ячеистостью 10-30 меш и привитого слоя гамма-оксида алюминия, а также нанесенных на носитель биметаллических комплексных соединений металлов VIII и VI групп. Катализатор отличается тем, что высокопористый ячеистый материал имеет открытую пористость не менее 50%, в качестве биметаллических комплексных соединений металлов VIII и VI групп катализатор включает соединения никеля или кобальта и молибдена, а содержание компонентов в прокаленном при температуре 550°С катализаторе составляет, мас.%: высокопористый ячеистый материал ...

КАТАЛИЗАТОР СЕЛЕКТИВНОГО КАТАЛИТИЧЕСКОГО ВОССТАНОВЛЕНИЯ

Настоящее изобретение относится к катализатору для селективного восстановления оксидов азота, имеющему два каталитически активных слоя А и Б, при этом слой А содержит оксидный носитель, а также компоненты А1 и А2, а слой Б содержит оксидный носитель, а также компоненты Б1, Б2 и Б3, где А1 и Б1 обозначают по меньшей мере один оксид ванадия, А2 и Б2 обозначают по меньшей мере один оксид вольфрама и Б3 обозначает по меньшей мере один оксид кремния, отличающийся тем, что доля компонента А1 в слое А в мас. % в пересчете на общую массу этого слоя А больше, чем доля компонента Б1 в слое Б в мас. % в пересчете на общую массу этого слоя Б, а доля слоя А в мас. % в пересчете на общую массу слоев А и Б больше, чем доля слоя Б. Также заявлены способ снижения оксидов азота в отработавших газах (ОГ), работающих на обедненных смесях двигателей внутреннего сгорания с использованием указанного выше катализатора, система снижения токсичности отработавших газов (ОГ), имеющая указанный выше катализатор и способ ...

КАТАЛИТИЧЕСКИЕ ИЗДЕЛИЯ

Предложено каталитическое изделие для применения для обработки выхлопа двигателя внутреннего сгорания (варианты), где один из вариантов содержит подложку, имеющую каталитическое покрытие на ней, причем каталитическое покрытие содержит каталитический слой, где каталитический слой содержит компонент благородного металла на частицах носителя, и где частицы носителя имеют бимодальное распределение частиц по размеру, содержащее частицы микронного масштаба и частицы наномасштаба, где частицы микронного масштаба имеют средний размер частиц ≥ 1 микрон, и частицы наномасштаба имеют средний размер частиц ≤ 950 нм, благородный металл представляет собой палладий или платину, и каталитический слой содержит оксид церия, оксид алюминия и оксид циркония. Также предложена система для обработки выхлопного газа и способ обработки выхлопного газа двигателя внутреннего сгорания, которые содержат каталитическое изделие один из вариантов, который описан выше. Кроме того, предложен способ получения каталитического ...

ГРАНУЛИРОВАННЫЙ ЦЕОЛИТ ZSM-5 БЕЗ СВЯЗУЮЩЕГО И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Изобретение относится к синтезу цеолитов. Описан способ получения гранулированного без связующего кристаллического цеолита ZSM-5, включающий смешение порошкообразного цеолита ZSM-5 с другим сырьевым компонентом, увлажнение полученной смеси, формование гранул, сушку, гидротермальную кристаллизацию при повышенной температуре, отмывку, сушку и последующую прокалку гранул, отличающийся тем, что в качестве другого сырьевого компонента в смесь для формования гранул вводят предварительно полученный аморфный алюмосиликат с мольным соотношением SiO2/Al2O3=30 в таком количестве, чтобы общее массовое содержание компонентов в смеси составляло: порошкообразный цеолит ZSM-5 50-65%, аморфный алюмосиликат 35-50%, увлажнение полученной смеси осуществляют путем добавления воды, прокалку сформованных гранул проводят при 550°С в атмосфере воздуха в течение 4 часов, гидротермальную кристаллизацию осуществляют из реакционных смесей следующего состава: (3,0-4,0)Na2O⋅(0,5-2,3)R⋅Al2O3⋅(60-80)SiO2⋅(450-900)Н2О, ...

КАТАЛИЗАТОР ОКИСЛЕНИЯ ДЛЯ ОБРАБОТКИ ВЫХЛОПНЫХ ГАЗОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к катализирующей монолитной основе, содержащей окислительный катализатор на монолитной основе для применения при обработке выхлопных газов, выпускаемых из двигателя внутреннего сгорания, работающего на обедненных топливных смесях. Данная катализирующая монолитная основа содержит первое покрытие из пористого оксида, имеющее длину L, и второе покрытие из пористого оксида, где второе покрытие из пористого оксида расположено в виде слоя поверх первого покрытия из пористого оксида на протяжении по меньшей мере части длины L, где первое покрытие из пористого оксида включает композицию катализатора, содержащую платину, и по меньшей мере один материал-носитель для платины, где второе покрытие из пористого оксида включает композицию катализатора, содержащую как платину, так и палладий, и по меньшей мере один материал-носитель для платины и палладия, и где массовое отношение платины к палладию во втором покрытии из пористого оксида составляет <2, причем массовое отношение Pt ...

КОРКОВЫЙ КАТАЛИЗАТОР, ПРЕДНАЗНАЧЕННЫЙ, В ЧАСТНОСТИ, ДЛЯ ОКИСЛЕНИЯ МЕТАНОЛА В ФОРМАЛЬДЕГИД, И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

... 1. Корковый катализатор, в частности, для окисления метанола в формальдегид, и содержащий на инертном, предпочтительно по существу непористом носителе по меньшей мере один слой покрытия, которое перед удалением органических составляющих компонентов b) и c) содержит ! a) оксиды или переводимые в соответствующие оксиды предшествующие соединения молибдена и железа, причем молярное соотношение Mo:Fe находится в интервале от 1:1 до 5:1, а также, в случае необходимости, другие металлические или металлооксидные составляющие или переводимые в соответствующие оксиды предшествующие соединения; ! b) по меньшей мере одно органическое связующее вещество; ! c) по меньшей мере один другой компонент, выбранный из группы, состоящей из золя SiO2 или его предшественника, золя Al2O3 или его предшественника, золя ZrO2 или его предшественника, золя TiO2 или его предшественника, жидкого стекла, MgO, цемента, мономеров, олигомеров или полимеров силанов, алкоксисиланов, арилоксисиланов, акрилоксисиланов, аминосиланов ...

СПОСОБ ЭКСПЛУАТАЦИИ УСТРОЙСТВА, ИМЕЮЩЕГО ПО МЕНЬШЕЙ МЕРЕ ОДИН ЭЛЕКТРОНАГРЕВАЕМЫЙ СОТОВЫЙ ЭЛЕМЕНТ

... 1. Способ эксплуатации устройства, имеющего по меньшей мере один электронагреваемый и проточный для отработавших газов первый сотовый элемент (2) с по меньшей мере одной токораспределительной структурой (4), на которую при включении перед подачей на нее постоянного греющего напряжения (22) для нагрева сотового элемента (2) сначала подают несколько коротких последовательных импульсов (21) напряжения. ! 2. Способ по п.1, при осуществлении которого на токораспределительную структуру перед подачей на нее греющего напряжения (22) подают от трех до десяти импульсов (21) напряжения. ! 3. Способ по п.1 или 2, при осуществлении которого длительность импульсов (21) напряжения составляет от 10 до 100 мс. ! 4. Способ по п.1 или 2, при осуществлении которого уровень импульсов (21) напряжения ниже уровня постоянного греющего напряжения (22). ! 5. Устройство для каталитического превращения содержащихся в отработавших газах (ОГ) вредных веществ в системе выпуска ОГ, имеющее по меньшей мере один первый ...

AMMONIA OXIDATION CATALYSTS

Ammonia oxidation catalyst units comprising a pair of honeycomb-type blocks having interplaced between them a layer of a gas permeable material performing the function of radially mixing the gas flow, said blocks comprising an ammonia oxidation catalysts, and having height of less than 15 cm and the interplaced layer height of 3 to 0.5 cm. 1. A catalyst for ammonia oxidation formed of one or more catalytic units each of which formed of a pair of blocks having a honeycomb structure containing tubular passages not interconnected through bores , comprising an ammonia oxidation catalyst , each of said blocks having height of less than 15 cm and more than 2 cm and interplaced between them a foamed layer having a height of not more than 3 cm and at least of 0.5 cm , formed of foamed material having open , randomly connected cells.2. The catalyst according to claim 1 , wherein the interplaced foamed layer has a height of 0.5-2 cm.3. The catalyst according to claim 1 , wherein the height of each of the blocks is from 2 to 6 cm.4. The catalyst according to claim 1 , wherein the density of the cells of the foamed layer ranges from 3 to 10 cells/cm.5. The catalyst according to claim 1 , wherein the blocks are formed of ceramic or metallic material.6. The catalyst according to claim 1 , wherein the blocks have a number of cells per cm claim 1 , which can be the same or different claim 1 , from 3 to 10 and wherein the number of pores per cm of the foamed layer is 4 to 20.7. The catalyst according to claim 1 , wherein the foamed layer is formed of foamed alumina. This application is a continuation of U.S. patent application Ser. No. 12/640,266, filed Dec. 17, 2009, the entire content and disclosure of which is incorporated herein by reference.The present invention relates to an ammonia oxidation catalyst unit formed of a pair of honeycomb-type blocks comprising an ammonia oxidation catalyst and having interplaced between them a layer of foamed material.For many years, the ...

HONEYCOMB STRUCTURE AND HONEYCOMB CATALYST

There is disclosed a honeycomb structure usable as a support of a honeycomb catalyst onto which a large amount of catalyst can be loaded and which has a good purification efficiency, and the honeycomb structure includes porous partition walls defining a plurality of cells to form through channels of a fluid and having a plurality of pores therein, wherein a porosity of the partition walls is from 45 to 70%, and in a cross section perpendicular to an extending direction of the cells, a total area of macro pores having the largest pore diameter of larger than 10 μm is 50% or more with respect to a total area of the pores 1. A honeycomb structure comprising porous partition walls defining a plurality of cells to form through channels of a fluid and having a plurality of pores therein ,wherein a porosity of the partition walls is from 45 to 70%, andin a cross section perpendicular to an extending direction of the cells, a total area of macro pores having the largest pore diameter of larger than 10 μm is 50% or more with respect to a total area of the pores.2. The honeycomb structure according to claim 1 ,wherein in the cross section perpendicular to the extending direction of the cells, an outer peripheral shape of the macro pores being contained in the partition walls is at least one of a circular shape and an elliptic shape.3. A honeycomb catalyst comprising the honeycomb structure according to ; and a catalyst loaded onto the surfaces of the pores being contained in the partition walls of the honeycomb structure claim 1 ,wherein in a cross section perpendicular to an extending direction of the cells, a total area of high cavity ratio pores which are the macro pores having a catalyst occupying area of 50% or less among the macro pores is from 15 to 40% with respect to a total area of the pores.4. A honeycomb catalyst comprising the honeycomb structure according to ; and a catalyst loaded onto the surfaces of the pores being contained in the partition walls of the ...

HONEYCOMB STRUCTURE

A honeycomb structure including a tubular honeycomb structure portion having: porous partition walls with which a plurality of cells extending from one end surface to the other end surface are formed to partition through channels of a fluid; and an outer peripheral wall positioned on an outermost periphery, an electrical resistivity of the partition walls is from 1 to 200 Ωcm, at least a part of the outer peripheral wall is formed by a low Young's modulus portion configured to have a Young's modulus lower than that of the partition walls, and a ratio of the Young's modulus of the low Young's modulus portion to the Young's modulus of the partition walls is from 2 to 95%. Provided is a honeycomb structure which is a catalyst carrier and also functions as a heater when a voltage is applied thereto and which has an excellent heat shock resistance. 126-. (canceled)27. A honeycomb structure comprising a tubular honeycomb structure portion including: porous partition walls with which a plurality of cells extending from one end surface to the other end surface are formed to partition through channels of a fluid , and an outer peripheral wall positioned on an outermost periphery ,wherein an electrical resistivity of the partition walls is from 1 to 200 Ωcm,at least a part of the outer peripheral wall is formed by a low Young's modulus portion configured to have a Young's modulus lower than the Young's modulus of the partition walls, anda ratio of the Young's modulus of the low Young's modulus portion to the Young's modulus of the partition walls is from 2 to 95%.28. The honeycomb structure according to claim 27 ,wherein all of the outer peripheral wall is formed by the low Young's modulus portion.29. The honeycomb structure according to claim 28 ,wherein the ratio of the Young's modulus of the low Young's modulus portion to the Young's modulus of the partition walls is from 2 to 60%.30. The honeycomb structure according to claim 28 , further comprising:a pair of electrode ...

HYDROGEN PRODUCTION CATALYST CONTAINING Ni3Si-BASED INTERMETALLIC COMPOUND, METHOD FOR ACTIVATING THE CATALYST, AND HYDROGEN PRODUCTION METHOD AND DEVICE USING THE CATALYST

A catalyst according to the present invention exhibits a catalytic action to a methanol decomposition reaction or a hydrocarbon steam-reforming reaction in a short time. The present invention provides a catalyst for producing hydrogen gas, using an NiSi-based intermetallic compound. 1. A catalyst for producing a hydrogen gas , comprising an NiSi-based intermetallic compound.2. The catalyst according to claim 1 , wherein the NiSi-based intermetallic compound contains 0 to 500 ppm by weight of B with respect to a total weight of a composition containing 10.0 to 28.0% by atom of Si claim 1 , a balance made up of Ni as a major component claim 1 , and inevitable impurities.3. The catalyst according to claim 1 , wherein the NiSi-based intermetallic compound comprises at least a βphase having an L1crystal structure.4. The catalyst according to claim 1 , wherein the NiSi-based intermetallic compound subjected to an activation treatment by bringing into contact with gaseous methanol is used for producing the hydrogen gas from hydrocarbon.5. A reaction device comprising a plurality of disk-like members formed of the catalyst according to claim 1 , whereineach of the disk-like members has a plurality of through-holes, andthe plurality of disk-like members is stacked so that the through-holes in the disk-like members adjacent to each other are shifted.6. A method for producing the hydrogen gas from methanol or hydrocarbon by using the catalyst according to .7. A method for producing the hydrogen gas from hydrocarbon claim 1 , comprising the steps of:{'claim-ref': {'@idref': 'CLM-00004', 'claim 4'}, 'heating the catalyst according to to temperatures of 700° C. or higher, and'}bringing a gas comprising hydrocarbon and steam into contact with the heated catalyst.8. A hydrogen production device comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the catalyst according to ;'}a heating unit for heating the catalyst; anda supply portion for supplying methanol or hydrocarbon ...

CATALYTIC COMPOSITION WITH ADDED COPPER TRAPPING COMPONENT FOR NOx ABATEMENT

The present disclosure provides catalyst compositions for NOx conversion and wall-flow filter substrates comprising such catalyst compositions. Certain catalyst compositions include a zeolite with sufficient Cu exchanged into cation sites thereof to give a Cu/Al ratio of 0.1 to 0.5 and a CuO loading of 1 to 15 wt. %; and a copper trapping component (e.g., alumina) including a plurality of particles having a D90 particle size of about 0.5 to 20 microns in a concentration of about 1 to 20 wt. %. The zeolite and copper trapping component can be in the same washcoat layer or can be in different washcoat layers (such that the copper trapping component serves as a “pre-coating” on the wall-flow filter substrate).

PEROVSKITE WITH AN OVLERLAYER SCR COMPONENT AS AN AMMONIA OXIDATION CATALYST AND A SYSTEM FOR EXHAUST EMISSION CONTROL ON DIESEL ENGINES

An ammonia slip control catalyst having a layer containing perovskite and a separate layer containing an SCR catalyst is described. The ammonia slip catalyst can have two stacked layers, with the top overlayer containing an SCR catalyst, and the bottom layer containing a perovskite. The ammonia slip catalyst can alternatively be arranged in sequential layers, with the SCR catalyst being upstream in the flow of exhaust gas relative to the perovskite. A system comprising the ammonia slip catalyst upstream of a PGM-containing ammonia oxidation catalyst and methods of using the system are described. The system allows for high ammonia oxidation with good nitrogen selectivity. Methods of making and using the ammonia slip catalyst to reduce ammonia slip and selectively convert ammonia to Nare described. 1. An ammonia slip catalyst comprising a first layer comprising an SCR catalyst and a second layer comprising a perovskite , wherein the first layer is arranged to contact an exhaust gas before the second layer.2. The ammonia slip catalyst of claim 1 , wherein the first layer is an overlayer located over the second layer.3. The ammonia slip catalyst of claim 1 , wherein the first layer is supported on a first support material and the second layer is supported on a second support material.4. The ammonia slip catalyst of claim 1 , wherein the SCR catalyst comprises an oxide of a base metal claim 1 , a molecular sieve claim 1 , a metal exchanged molecular sieve or a mixture thereof.5. The ammonia slip catalyst of claim 4 , wherein the base metal is selected from the group consisting of cerium (Ce) claim 4 , chromium (Cr) claim 4 , cobalt (Co) claim 4 , copper (Cu) claim 4 , iron (Fe) claim 4 , manganese (Mn) claim 4 , molybdenum (Mo) claim 4 , nickel (Ni) claim 4 , tungsten (W) and vanadium (V) claim 4 , and mixtures thereof.6. The ammonia slip catalyst of claim 1 , wherein the SCR catalyst comprises a metal exchanged molecular sieve and the metal is selected from the group ...

EXHAUST GAS PURIFICATION DEVICE

A substrate () includes an inflow-side cell (), an outflow-side cell (), and a porous, gas-permeable partition wall () that separates the inflow-side cell () and the outflow-side cell () from each other, and also includes a first catalyst portion () that is provided on a side of the partition wall () that faces the inflow-side cell () at least at a portion in upstream side in an exhaust gas flow direction, and a second catalyst portion () that is provided on a side of the partition wall that faces the outflow-side cell at least at a portion in downstream side. With respect to a pore volume of pores with a pore size of 10 to 18 μm, when a measured value of the pore volume in the first catalyst portion () and the partition wall () within a region where the first catalyst portion () is provided is defined as a first pore volume, and a measured value of the pore volume in the second catalyst portion () and the partition wall () within a region where the second catalyst portion () is provided is defined as a second pore volume, the first pore volume is greater than the second pore volume. A catalytically active component contained in the first catalyst portion () and a catalytically active component contained in the second catalyst portion () are of different types. 1. An exhaust gas purification catalyst comprising:a substrate; anda catalyst portion provided in the substrate, an inflow-side cell including a space whose inflow-side in an exhaust gas flow direction is open and whose outflow-side is closed;', 'an outflow-side cell including a space whose inflow-side in the exhaust gas flow direction is closed and whose outflow-side is open; and', 'a porous partition wall that separates the inflow-side cell and the outflow-side cell from each other, and, 'the substrate including a first catalyst portion that is provided at least on a portion of a side of the partition wall that faces the inflow-side cell, the portion being located on an upstream side in the flow direction; ...

ZEOLITE, METHOD FOR MANUFACTURING ZEOLITE, HONEYCOMB CATALYST, AND EXHAUST GAS PURIFYIG APPARATUS

A zeolite has a CHA structure, a SiO/AlOcomposition ratio less than about 15, and an average particle size from about 0.1 μm to about 0.5 μm. 1. A zeolite comprising:a CHA structure;{'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than about 15; and'}an average particle size from about 0.1 μm to about 0.5 μm.2. The zeolite according to claim 1 ,wherein the zeolite has a ratio of a total integrated intensity of a (211) plane, a (104) plane, and a (220) plane in an X-ray diffraction spectrum obtained by a powder X-ray diffraction method of about 3.1 or more relative to a total integrated intensity of a (111) plane and a (200) plane in an X-ray diffraction spectrum of lithium fluoride.3. The zeolite according to claim 1 ,wherein Cu in an amount of about 3.5% by mass to about 6.0% by mass of the zeolite is supported on the zeolite.4. A method for manufacturing a zeolite claim 1 , the method comprising: a CHA structure;', {'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than about 15; and'}, 'an average particle size from about 0.1 μm to about 0.5 μm, a compound of the Al source having a solubility of about 1.0 g or less in 100 g of a 1 mol/L aqueous potassium hydroxide solution., 'reacting a raw material composition containing a Si source, an Al source, an alkali source, water, and a structure directing agent to synthesize the zeolite comprising5. A method for manufacturing a zeolite claim 1 , the method comprising: a CHA structure;', {'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than about 15; and'}, 'an average particle size from about 0.1 μm to about 0.5 μm, a ratio of a mole number of water to a total mole number of Si in the Si source and Al in the Al source more than or equal to about 15., 'reacting a raw material composition containing a Si source, an Al source, an alkali source, water, and a structure directing agent to synthesize the zeolite comprising6. A method for manufacturing a zeolite claim 1 , the method comprising: a CHA structure;', ...

ZEOLITE, METHOD FOR MANUFACTURING ZEOLITE, HONEYCOMB CATALYST, AND EXHAUST GAS PURIFYIG APPARATUS

A zeolite has a CHA structure, a SiO/AlOcomposition ratio less than 15, and potassium in an amount of about 0.1% by mass to about 1% by mass in terms of KO. 1. A zeolite comprising:a CHA structure;{'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than 15; and'}{'sub': '2', 'potassium in an amount of about 0.1% by mass to about 1% by mass in terms of KO.'}2. The zeolite according to claim 1 ,wherein the zeolite has an average particle size of about 0.1 μm to about 0.5 μm.3. The zeolite according to claim 1 ,wherein the zeolite has a ratio of a total integrated intensity of a (211) plane, a (104) plane, and a (220) plane in an X-ray diffraction spectrum obtained by a powder X-ray diffraction method of about 3.1 or more relative to a total integrated intensity of a (111) plane and a (200) plane in an X-ray diffraction spectrum of lithium fluoride.4. The zeolite according to claim 1 ,wherein Cu in an amount of about 3.5% by mass to about 6.0% by mass of the zeolite is supported on the zeolite.5. A method for manufacturing a zeolite claim 1 , the method comprising: a CHA structure;', {'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than 15; and'}, {'sub': '2', 'potassium in an amount of about 0.1% by mass to about 1% by mass in terms of KO; and'}], 'reacting a raw material composition containing a Si source, an Al source, an alkali source, water, and a structure directing agent to synthesize the zeolite comprisingcontrolling an amount of the potassium in the zeolite synthesized in the reacting the raw material composition using at least one of ammonium sulfate, ammonium nitrate, and ammonium chloride.6. A honeycomb catalyst comprising: an inorganic binder; and', a CHA structure;', {'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than 15; and'}, {'sub': '2', 'potassium in an amount of about 0.1% by mass to about 1% by mass in terms of KO.'}], 'a zeolite comprising], 'a honeycomb unit having partition walls extending along a longitudinal direction of the ...

EXHAUST GAS PURIFICATION APPARATUS

A exhaust gas purification apparatus is provided with: a substrate having a wall-flow structure and including entry-side cells, exit-side cells, and a porous partition; a first catalyst region formed in small diameter pores having relatively small pore diameters among internal pores in the partition; and a second catalyst region formed in large diameter pores having relatively large pore diameters among the internal pores in the partition. The first catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support, while the second catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support and other than at least the precious metal present in the first catalyst region. 1. An exhaust gas purification apparatus that is disposed in an exhaust passage of an internal combustion engine and that purifies an exhaust gas discharged from the internal combustion engine , the exhaust gas purification apparatus comprising:a substrate having a wall-flow structure and including an entry-side cell in which only an exhaust gas inflow-side end part is open, an exit-side cell residing adjacent to an entry-side cell and in which only an exhaust gas outflow-side end part is open, and a porous partition that divides the entry-side cell from the exit-side cell;a first catalyst region formed in small pores having relatively small pore diameters among internal pores in the partition; anda second catalyst region formed in large pores having relatively large pore diameters among the internal pores in the partition, whereinthe first catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support, andthe second catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support and other than at least the precious metal present in ...

PHOTOCATALYST FILTER, PHOTOCATALYST FILTER LAMINATE, EXHAUST UNIT, AND IMAGE FORMING APPARATUS

The present disclosure provides a photocatalyst filter that can efficiently decompose and eliminate ozone gas or VOC and has a low ventilation resistance. The photocatalyst filter includes a sheet-like filter substrate and a photocatalyst layer supported by the filter substrate. The photocatalyst layer exhibits a photocatalytic action by receiving light having a wavelength of 400 nm or more. The photocatalyst filter has an aperture ratio of 35% or more and 80% or less. 1. A photocatalyst filter comprising:a sheet-like filter substrate; anda photocatalyst layer supported by the filter substrate, whereinthe photocatalyst layer exhibits a photocatalytic action by receiving light having a wavelength of 400 nm or more; andthe photocatalyst filter has an aperture ratio of 35% or more and 80% or less.2. The photocatalyst filter according to claim 1 , wherein the filter substrate has a curved shape.3. A photocatalyst filter laminate comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a plurality of photocatalyst filters according to , wherein'}the photocatalyst filters are stacked; andthe photocatalyst filter laminate has a thickness of 1 mm or more and 10 mm or less.4. An exhaust unit comprising:{'claim-ref': {'@idref': 'CLM-00003', 'claim 3'}, 'a photocatalyst filter laminate according to ;'}a first light source section for irradiating the photocatalyst filter laminate with light having a wavelength of 400 nm or more; andan exhaust fan for discharging gas from an exhaust port, whereinthe photocatalyst filter laminate is disposed in the exhaust port.5. The exhaust unit according to claim 4 , whereinthe photocatalyst filter laminate has a curved shape; andthe first light source section irradiates light to a concave surface of the photocatalyst filter laminate.6. The exhaust unit according to claim 5 , whereinthe photocatalyst filter laminate includes a first photocatalyst filter disposed at the surface receiving light from the first light source section and a ...

METHOD FOR THE PREPARATION OF A CATALYSED MONOLITH

Method for the preparation of a catalysed monolithic body or a catalysed particulate filter by capillary suction of sol-solution containing catalytically active material and metal oxide catalyst carriers or precursors thereof into pores of monolithic substrate. 1. A method for the preparation of a catalysed monolith , comprising the steps ofa) providing a porous monolith substrate with a plurality of longitudinal flow channels separated by gas permeable partition walls, the monolith substrate having a first end face and at a distance to the first end face a second end face;b) in a container providing a sol solution at least in an amount corresponding to pore volume of the gas permeable partition walls, the sol solution containing a water soluble or colloidal precursor of one or more catalytically active compounds and a water soluble or colloidal precursor of one or more metal oxides catalyst carrier compounds, at least one of the one or more precursors is colloid and at least one of the one or more precursors is water soluble;c) placing the monolith substrate substantially vertically in the container with the first or second end face dipped into the sol solution;d) sucking up the sol solely by capillary forces into pores of the permeable partition walls from the end face dipped into the sol solution without applying vacuum or pressure to a predetermined distance in the permeable partition walls from the end face dipped into the sol solution;e) subsequently inverting the monolith substrate and placing the monolith substrate substantially vertically in the container with the opposite end face dipped into the sol solution;f) sucking up the sol solely by capillary forces into pores of the permeable partition walls from the opposite end face dipped into the sol solution without applying vacuum or pressure; andg) drying and calcining the thus coated monolith substrate.2. The method of claim 1 , wherein the predetermined distance is about half of the whole distance between ...

ZEOLITIC 3D SCAFFOLDS WITH TAILORED SURFACE TOPOGRAPHY FOR METHANOL CONVERSION WITH LIGHT OLEFINS SELECTIVITY

The present disclosure relates to 3D printed zeolite scaffolds. The zeolite scaffolds can be used as a catalyst for methanol to olefin (MTO) conversion and hydrocarbon cracking processes. 1. A zeolite coated monolith article comprising an uncoated monolithic support structure including walls having a honeycomb structure comprising ammonia-ZSM-5 powder (SiO/AlO) and bentonite clay; and a porous coating disposed directly upon the uncoated monolithic support structure.2. The zeolite coated monolith article of claim 1 , further comprises an additional component selected from the group consisting of amorphous silica claim 1 , a plasticizing binder claim 1 , a metal dopant claim 1 , and combinations thereof disposed within the uncoated monolithic support structure.3. The zeolite coated monolith article of claim 2 , wherein the metal dopant is selected from the group consisting of Zn claim 2 , Ce claim 2 , Cr claim 2 , Mg claim 2 , Cu claim 2 , La claim 2 , Ga claim 2 , Y claim 2 , and combinations thereof.4. The zeolite coated monolith article of claim 1 , wherein the porous coating comprises SAPO-34.5. The zeolite coated monolith article of claim 1 , wherein the zeolite coated monolith has a wall thickness of about 0.2 mm to about 0.9 mm.6. The zeolite coated monolith article of claim 1 , wherein the zeolite coated monolith has a square channel length of about 0.2 mm to about 1.6 mm.7. The zeolite coated monolith article of claim 1 , wherein the zeolite coated monolith has a total pore volume of about 0.2 cm/g to about 0.95 cm/g.8. The zeolite coated monolith article of claim 1 , wherein the zeolite coated monolith has a mesoporosity of about 0.1 cm/g to about 0.95 cm/g.9. A process for converting methanol to one or more light olefins (MTO) claim 1 , the process comprising contacting methanol claim 1 , under deoxygenation conditions claim 1 , with a catalyst comprising a zeolite monolith claim 1 ,{'sub': 2', '2', '3, 'wherein the zeolite monolith comprises an uncoated ...

METHOD FOR THE PREPARATION OF A ZONE COATED CATALYSED MONOLITH

Method for zone coating of monolithic substrates by using different sol-solution containing different catalyst carrier precursors and metal catalyst precursors and suction of one of the sol-solution up into pores in the walls of the zone to be coated, solely by capillary forces and another different sol-solution into the walls of another zone to be coated by capillary forces. 1. A method for the preparation of a catalysed monolith zone coated with different catalysts , comprising the steps ofa) providing a porous monolith substrate with a plurality of longitudinal flow channels separated by gas permeable partition walls, the monolith substrate having a first end face and at a distance to the first end face a second end face;b) providing a first sol solution in an amount corresponding to at least the pore volume in a first catalyst zone of the gas permeable partition walls to be coated with the first sol solution, the first sol solution containing water soluble or suspended precursors of one or more catalytically active compounds and water soluble or suspended precursors or oxides of one or metal oxides catalyst carrier compounds, at least one of the one or more precursors or oxides is suspended and at least one of the one or more precursors is dissolved in the sol solution;c) providing a second sol solution in an amount corresponding to at least the pore volume in a second catalyst zone of the gas permeable partition walls to be coated with the second sol solution, the second sol solution containing water soluble or suspended precursors of one or more catalytically active compounds different to the catalytically active compounds in the first sol solution and water soluble or suspended precursors or oxides of one or more metal oxides catalyst carrier compounds, at least one of the one or more precursors or oxides is suspended and at least one of the one or more precursors is dissolved in the second sol solution;d) placing the porous monolith substrate substantially ...

Carbon Nanotube Foams with Controllable Architecture and Methods

CNT foams and methods are provided. The methods may include forming, in a non-solvent liquid, a suspension of CNTs and particles of a pyrolytic polymer; removing the non-solvent liquid; and removing the particles of the pyrolytic polymer to produce a CNT foam having cells that at least substantially correspond to the dimensions of the particles of the pyrolytic polymer. CNT foams having porous structures also are provided. 1. A method for making a carbon nanotube (CNT) foam , the method comprising:forming a suspension comprising a non-solvent liquid in which CNTs and particles of a pyrolytic polymer are dispersed;removing the non-solvent liquid; andremoving the particles of the pyrolytic polymer to produce a CNT foam having cells that at least substantially correspond to the dimensions of the particles of the pyrolytic polymer.2. The method of claim 1 , wherein forming the suspension comprises (i) dispersing CNTs in the non-solvent liquid to form a CNT suspension claim 1 , and (ii) adding the particles of the pyrolytic polymer to the CNT suspension.3. The method of claim 1 , wherein the pyrolytic polymer comprises a thermoplastic polymer.4. The method of claim 3 , wherein the thermoplastic polymer comprises poly(methylmethacrylate) claim 3 , nylon claim 3 , polyesters claim 3 , or a combination thereof.5. The method of claim 1 , wherein the particles of the pyrolytic polymer have an average diameter of from about 0.1 micrometers to about 1 claim 1 ,000 micrometers.6. The method of claim 1 , wherein the average length of the CNTs is at least two times the average diameter of the particles of the pyrolytic polymer.7. The method of claim 1 , wherein the average length of the CNTs is at least fifteen times the average diameter of the particles of the pyrolytic polymer.8. The method of claim 7 , wherein the average length of the CNTs is about 500 micrometers and the average diameter of the particles of the pyrolytic polymer is about 30 micrometers.9. The method of claim ...

OXIDATION CATALYST AND EXHAUST GAS PURIFICATION DEVICE USING SAME

Provided is: an oxidation catalyst having excellent ability to combust diesel fuel intermittently sprayed from a nozzle disposed in an exhaust pipe, the oxidation catalyst being incorporated into an exhaust gas purification device having a diesel particulate filter (DPF) or a catalyst soot filter (CSF) for collecting particulate matter from a diesel engine; and an exhaust gas purification device that uses the oxidation catalyst. An oxidation catalyst for exhaust gas purification in which a precious metal component is carried on an inorganic matrix, wherein the inorganic matrix is one or more inorganic oxides selected from the group consisting of alumina, titania, zirconia, silica, and silica-alumina, the oxidation catalyst being characterized in the use of a material in which the activation energy of diesel fuel combustion performance is 72 kJ/mol or less. 1. An oxidation catalyst comprising:a precious metal component carried onan inorganic matrix is that comprises one or more inorganic oxides selected from the group consisting of alumina, titania, zirconia, silica, and silica-alumina;wherein the oxidation catalyst comprises a material in which the activation energy of diesel fuel combustion performance is 72 kJ/mol or less.2. The oxidation catalyst according to claim 1 , wherein the inorganic matrix contains an inorganic oxide of which the activation energy of diesel fuel combustion performance exceeds 72 kJ/mol to the inorganic matrix claim 1 , in an amount of 15% by weight or less.3. The oxidation catalyst according to claim 1 , wherein the inorganic oxide consists of two or more inorganic oxides having different volume densities.4. The oxidation catalyst according to claim 1 , wherein the precious metal component is platinum (Pt) and/or palladium (Pd).5. The oxidation catalyst according to claim 1 , wherein the alumina consists of one or more alumina selected from the group consisting of γ-alumina claim 1 , δ-alumina and θ-alumina.6. The oxidation catalyst ...

HIERARCHICAL MAGNETIC NANOPARTICLE-ENZYME MESOPOROUS ASSEMBLIES EMBEDDED IN MACROPOROUS SCAFFOLDS

A hierarchical catalyst composition comprising a continuous or particulate macroporous scaffold in which is incorporated mesoporous aggregates of magnetic nanoparticles, wherein an enzyme is embedded in mesopores of the mesoporous aggregates of magnetic nanoparticles. Methods for synthesizing the hierarchical catalyst composition are also described. Also described are processes that use the recoverable hierarchical catalyst composition for depolymerizing lignin remediation of water contaminated with aromatic substances, polymerizing monomers by a free-radical mechanism, epoxidation of alkenes, halogenation of phenols, inhibiting growth and function of microorganisms in a solution, and carbon dioxide conversion to methanol. Further described are methods for increasing the space time yield and/or total turnover number of a liquid-phase chemical reaction that includes magnetic particles to facilitate the chemical reaction, the method comprising subjecting the chemical reaction to a plurality of magnetic fields of selected magnetic strength, relative position in the chemical reaction, and relative motion. 122.-. (canceled)23. A method for epoxidation reactions of alkenes , the method comprising reacting alkenes in the presence of oxygen with a hierarchical catalyst composition comprising a continuous macroporous scaffold in which is incorporated self-assembled mesoporous aggregates of magnetic nanoparticles containing an oxygen-transfer enzyme embedded in mesopores of said mesoporous aggregates of magnetic nanoparticles , to produce an alkene oxide.24. The method of claim 23 , wherein said oxygen-transfer enzyme is a chloroperoxidase or a lipase.2539.-. (canceled)40. The method of claim 23 , further comprising magnetic particles claim 23 , not belonging to said mesoporous aggregates of magnetic nanoparticles claim 23 , embedded in said continuous macroporous scaffold.41. The method of claim 23 , wherein said continuous macroporous scaffold has a polymeric composition.42 ...

EXHAUST GAS PURIFYING DEVICE OF INTERNAL-COMBUSTION ENGINE, AND METHOD OF MANUFACTURING SAME

Provided is an exhaust gas purifying device of an internal-combustion engine, and a method of manufacturing the same, with which it is possible for a honeycomb carrier to be held securely within a case member using a low-cost, simple structure. The exhaust gas purifying device is provided with: a columnar honeycomb carrier in which a plurality of cells which extend from an exhaust gas inflow side to an outflow side, and which serve as exhaust gas flow paths, are demarcated and famed by means of porous separating walls; a three-way catalyst supported in the honeycomb carrier ; and a cylindrical case member in which the honeycomb carrier is housed, with the interposition of a retaining member . The honeycomb carrier is provided with outer circumferential plugging portions and formed in such a way as to plug, to a prescribed depth, openings Ca and Cb of cells in an outer circumferential portion P of at least one end surface of the two end surfaces, in the central axis X-direction, of the honeycomb carrier ; and inclined portions and formed in a direction whereby the length, in the central axis X-direction, of the outer circumferential plugging portions and decreases toward the outer circumferential edge. Further, the inclined portions and catch on the inner walls of the case member , with the interposition of the retaining member , thereby retaining the honeycomb carrier in the case member 1. An exhaust gas purifying device that is provided in an exhaust passage of an internal-combustion engine , and purifies exhaust gas of the internal-combustion engine , the device comprising:a honeycomb carrier of columnar shape in which a plurality of cells extending from an exhaust gas inlet side end face until an outlet side end face to form flow paths of exhaust gas are demarcated and formed by porous separating walls;an exhaust gas purifying catalyst that is loaded on the honeycomb carrier; anda cylindrical case member that houses the honeycomb carrier via a retaining member, ...

EXHAUST GAS CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE

An exhaust gas control system includes an upstream purification device disposed in an exhaust passage of the internal combustion engine, a downstream purification device disposed in a portion of the exhaust passage downstream from the upstream purification device, a fuel addition valve disposed in a portion of the exhaust passage upstream from the upstream purification device, and a urea addition valve disposed in a portion of the exhaust passage between the upstream purification device and the downstream purification device, and a cooling device. The cooling device is configured such that refrigerant cools the fuel addition valve first and then cools the urea addition valve subsequent to the fuel addition valve. 1. An exhaust gas control system for an internal combustion engine , the internal combustion engine being a compression ignition-type internal combustion engine operated to perform lean combustion ,the exhaust gas control system comprising:an upstream purification device disposed in an exhaust passage of the internal combustion engine, the upstream purification device including an oxidation catalyst;a downstream purification device disposed in a portion of the exhaust passage downstream from the upstream purification device, the downstream purification device including a selective catalytic reduction catalyst;a fuel addition valve disposed in a portion of the exhaust passage upstream from the upstream purification device, the fuel addition valve being configured to add fuel into exhaust gas of the internal combustion engine;a urea addition valve disposed in a portion of the exhaust passage between the upstream purification device and the downstream purification device, the urea addition valve being configured to add urea aqueous solution into the exhaust gas; anda cooling device having a cooling passage configured to carry refrigerant flowing through the cooling passage, the cooling passage being configured such that the refrigerant cools the fuel addition ...

HONEYCOMB BODIES HAVING AN ARRAY OF THROUGH CHANNELS WITH A RANGE OF HYDRAULIC DIAMETERS

A ceramic honeycomb body, suitable for use in exhaust gas processing, includes a honeycomb structure having a plurality of through-channels, a first portion of the plurality of through-channels have a first hydraulic diameter dh, a second portion of the plurality of through-channels have a second hydraulic diameter that is smaller than the first hydraulic diameter dh, the first hydraulic diameter dh is equal to or greater than 1.1 mm, and the first and second portions of through-channels, taken together, have a geometric surface area GSA greater than 2.9 mm. Diesel oxidation catalysts and methods of soot removal are also provided, as are other aspects. 1. A honeycomb body , comprising: {'sup': '−1', 'a plurality of channels disposed in parallel to each other in an axial direction, wherein a first portion of the plurality of channels have a dh≥1.1 mm, a second portion of the plurality of channels have a dh<1.1 mm, and the plurality of channels comprise GSA≥2.9 mm, wherein dh is hydraulic diameter and GSA is a geometric surface area.'}, 'a honeycomb structure comprising a plurality of unit channel structures disposed in a repeating pattern, each unit channel structure comprising2. The honeycomb body of claim 1 , wherein the plurality of channels extend from an inlet face to an outlet face.3. The honeycomb body of claim 1 , wherein every channel of the plurality of channels is a flow-through channel.4. The honeycomb body of claim 1 , wherein every channel of the plurality of channels is devoid of plugging.5. The honeycomb body of claim 1 , wherein at least a portion of the plurality of channels have a catalytic coating disposed thereon.6. The honeycomb body of claim 1 , wherein the honeycomb body comprises:{'sup': '2', 'CD≥62.0 cm(400 cpsi);'}{'sup': 2', '2, 'the first portion of the plurality of channels comprise 6.2 channels/ cm(40 cpsi)≤CD≤46.5 channels/ cm(300 cpsi); and'}3%≤CR≤40% wherein CR is a channel ratio of a total cross-sectional area of the first portion ...

Honeycomb structural body

A honeycomb structural body has plural cell density sections having a cell density which is changed stepwise in a radial direction. A partition wall is formed between adjacent cell density sections. The cell density sections have a high cell density section having a maximum cell density, excepting an outermost cell density section formed at an outermost side, and a low cell density section having a minimum cell density, excepting an innermost cell density section formed at an innermost side. A relationship of V−Va≧Vb+Vs is satisfied, where V indicates a volume of the honeycomb structural body if the overall honeycomb structural body is composed of the high cell density section, Va indicates a volume of the high cell density section, Vb indicates a volume of the cell density section, and Vs indicates a volume of the boundary wall which separates the low cell density section from the cell density section formed immediately inside of the low cell density section.

EXHAUST-GAS PURIFICATION APPARATUS AND METHOD FOR MANUFACTURING SAME

An exhaust-gas purification apparatus includes: a honeycomb base material including a plurality of exhaust-gas flow paths partitioned by a porous wall; and one or more catalyst noble metals carried by the honeycomb base material. The catalyst noble metals are selected from the group consisting of platinum, palladium, and rhodium. The honeycomb base material has a noble metal concentrated surface section in which a 50%-by-mass noble metal carry depth for a specific noble metal that is one type among one or two catalyst noble metals is less than 50% of the distance from the surface to the center of the inside of the porous wall. The 50%-by-mass noble metal carry depth is the depth at which, when the amount of the specific noble metal carried between the surface and the center of the inside of porous wall is used as a reference, 50% by mass of specific noble metal is carried. 1. An exhaust gas purification device comprising a honeycomb substrate having a plurality of exhaust gas flow paths separated by a porous wall , and one or more catalyst noble metals which are carried by the honeycomb substrate , whereinthe honeycomb substrate includes ceria-zirconia composite oxide particles as a constituent material,the catalyst noble metals are selected from the group consisting of platinum, palladium, and rhodium, 'a noble metal-enriched surface part in which a 50 mass % noble metal carrying depth of a specific noble metal, which is one of the one or more catalyst noble metals, is less than 50% of the distance from a surface of the porous wall to a center of an interior of the porous wall, and', 'the honeycomb substrate hasthe 50 mass % noble metal carrying depth is a depth in which 50 mass % of the specific noble metal is carried based on a quantity of the specific noble metal carried from the surface of the porous wall to the center of the interior of the porous wall.2. The exhaust gas purification device according to claim 1 , whereinthe specific noble metal is platinum or ...

EXHAUST GAS PURIFICATION FILTER

An exhaust gas purification filter includes a honeycomb structure part and sealing parts. The honeycomb structure part has a porous partition wall and a plurality of cells defined by the partition wall to form exhaust gas flow paths. The sealing parts seal alternately a gas inflow-side end face or a gas outflow-side end face of the cells. The exhaust gas purification filter includes fine pores with diameters of 10 μm or less measured by the mercury intrusion method that account for 5% or more of all pores by volume in the honeycomb structure part. The partition wall has a plurality of communication pores communicating between the cells adjacent to the partition wall and has constricted communication pore of which a largest diameter Φand a smallest diameter Φsatisfy relationships Φ≥50, 100×Φ/Φ≤20. 1. An exhaust gas purification filter comprising:a honeycomb structure part that has a porous partition wall and a plurality of cells defined by the partition wall to form an exhaust gas flow path; anda sealing part that seals alternately a gas inflow-side end face or a gas outflow-side end face of the cells, whereinthe exhaust gas purification filter includes fine pores with diameters of 10 μm or less measured by the mercury intrusion method that account for 5% or more of all pores by volume in the honeycomb structure part, and{'sub': 1', '2', '1', '2', '1, 'the partition wall has a plurality of communication pores communicating between cells adjacent to the partition wall and has constricted communication pores of which a largest diameter Φ(μm) and a smallest diameter Φ(μm) satisfy relationships Φ≥50, 100×Φ/Φ≤20, and'}the proportion of the constricted communication pores in all the communication pores is 20% or more.2. The exhaust gas purification filter according to claim 1 , wherein the fine pores are 25% or less of all pores by volume. The present application is a continuation application of International Application No. PCT/JP2020/006216 filed on Feb. 18, 2020, which ...

CATALYTIC CONVERTER

In order to specify a catalytic converter, especially SCR catalytic converter, with maximum catalytic activity, this catalytic converter has at least one catalytically active component and additionally at least one porous inorganic filler component having meso- or macroporosity. The organic porous filler component has a proportion of about 5 to 50% by weight. More particularly, a diatomaceous earth or a pillared clay material is used as the porous inorganic filler component. 1. A catalytic converter comprising: (a) a base component comprising at least one catalytically active component , a binder component and optionally fibres that provide mechanical stability; and (b) at least one porous inorganic filler component , wherein the inorganic filler component has at least mesoporosity.2. The catalytic converter according to claim 1 , wherein at least one catalytically active component is an SCR catalyst.3. The catalytic converter according to claim 1 , wherein:the at least one catalytically active component, the binder component, and the fibers, if present, are present in a defined ratio of proportions by weight relative to one another, andthe catalytic converter has at least a same catalytic activity as a comparative catalytic converter without a filler component and with the same catalytically active component, the binder component, and the fibers, if present, having same defined ratio of proportions relative to one another.4. The catalytic converter according to claim 1 , wherein the inorganic porous filler component is present within the range from 5 to 50% by weight relative to the total weight of the catalytic converter.5. The catalytic converter according to claim 4 , wherein the inorganic porous filler component is present within the range from 10 to 25% by weight claim 4 , relative to the weight of the catalytic converter.6. The catalytic converter according to claim 1 , wherein the at least one porous filler component comprises a clay material.7. The ...

EXHAUST GAS OXIDATION CATALYST FOR COMPRESSED NATURAL GAS COMBUSTION SYSTEM

Disclosed is a catalyst composition for inhibiting the deactivation of a catalyst for purifying exhaust gas from a compressed natural gas combustion system, which contains platinum and palladium as precious metal components. Specifically, a catalyst for purifying exhaust gas from a compressed natural gas vehicle or a static combustion system is configured such that a ceramic substrate is impregnated with palladium-impregnated first alumina, platinum-impregnated second alumina, and a ceria component, wherein the first alumina is further impregnated with a cocatalyst selected from the group consisting of barium, nickel, lanthanum, samarium, and yttrium, thus significantly inhibiting the deactivation of the CNG lean burn engine catalyst. 1. A catalyst for purifying exhaust gas from a compressed natural gas lean burn engine vehicle or a static combustion system , comprising a ceramic substrate is-impregnated with a palladium-impregnated first alumina , a platinum-impregnated second alumina , and a ceria component , wherein the first alumina is further impregnated with a cocatalyst selected from the group consisting of barium , nickel , lanthanum , samarium , and yttrium.2. The catalyst of claim 1 , wherein the cocatalyst is added in an amount of 1 to 100 wt % based on the amount of palladium in the catalyst.3. The catalyst of claim 1 , wherein a weight ratio of palladium and platinum claim 1 , which are respectively added to the first alumina and the second alumina claim 1 , ranges from 10:1 to 1:1. The present invention relates to an exhaust gas oxidation catalyst for a compressed natural gas combustion system and, more particularly, to a catalyst for purifying exhaust gas from a compressed natural gas lean burn engine, which is configured such that a conventional catalyst for purifying exhaust gas from a compressed natural gas lean burn engine, containing platinum and palladium as precious metal components, is further impregnated with a specific cocatalyst, thus ...

Catalytic extruded, solid honeycomb body

An extruded, solid honeycomb body comprises a copper-promoted, small pore, crystalline molecular sieve catalyst for converting oxides of nitrogen in the presence of a reducing agent, wherein the crystalline molecular sieve contains a maximum ring size of eight tetrahedral atoms, which extruded, solid honeycomb body comprising: 20-50% by weight matrix component comprising diatomaceous earth, wherein 2-20 weight % of the extruded, solid honeycomb body is diatomaceous earth; 80-50% by weight of the small pore, crystalline molecular sieve ion-exchanged with copper; and 0-10% by weight of inorganic fibres.

Catalytic Article for Treating Exhaust Gas

Provided is a catalytic article comprising (a) a flow through honeycomb substrate having channel walls; (b) a first NH-SCR catalyst composition coated on and/or within the channel walls in a first zone; and (c) a second NH-SCR catalyst composition coated on and/or within the channel walls in a second zone, provided that the first zone is upstream of the second zone and the first and second zones are adjacent or at least partially overlap; and wherein the first NH-SCR catalyst comprises a first copper loaded molecular sieve having a copper to aluminum atomic ratio of about 0.1 to 0.375 and the second NH-SCR catalyst comprises a second copper loaded molecular sieve having a copper-to-aluminum atomic ratio of about 0.3 to about 0.6. 1. A catalytic article comprising:a. a flow through honeycomb substrate having an inlet side, an outlet side, an axial length from the inlet side to the outlet side, and a plurality of channels defined by channel walls extending from the inlet side to the outlet side;{'sub': '3', 'b. a first NH-SCR catalyst composition coated on and/or within the channel walls in a first zone; and'}{'sub': '3', 'claim-text': {'sub': 3', '3, 'wherein the first NH-SCR catalyst comprises a first copper loaded molecular sieve having a copper to aluminum atomic ratio of about 0.1 to 0.375 and the second NH-SCR catalyst comprises a second copper loaded molecular sieve having a copper-to-aluminum atomic ratio of about 0.3 to about 0.6.'}, 'c. a second NH-SCR catalyst composition coated on and/or within the channel walls in a second zone, provided that the first zone is upstream of the second zone and the first and second zones are adjacent or at least partially overlap;'}2. The catalytic article of claim 1 , wherein the first zone is adjacent to the second zone.3. The catalytic article of claim 1 , wherein the first zone completely overlays the second zone.4. The catalytic article of claim 1 , wherein first zone extends from the inlet side to a first end point ...

Nano-sized functional binder

Described are catalytic articles comprising a substrate having a washcoat on the substrate, the washcoat containing a catalytic component having a first average (D50) particle size and a functional binder component having a second average (D50) particle size in the range of about 10 nm to about 1000 nm, wherein the ratio of the first average (D50) particle size to the second average (D50) particle size is greater than about 10:1. The catalytic articles are useful in methods and systems to purify exhaust gas streams from an engine.

Honeycomb bodies having an array of channels with different hydraulic diameters and methods of making the same

A honeycomb body comprises a matrix of intersecting porous walls forming channels. Plugs are disposed in a percentage of the channels having the second hydraulic diameter, wherein the percentage of the channels of the second diameter having a plug is less than or equal to 15%. In some embodiments, some of the channels have a first hydraulic diameter and others have a second hydraulic diameter that is smaller than the first hydraulic diameter, and may be unplugged for plugged. The porous walls can further comprise a transverse thickness of the walls Tw less than or equal to 0.20 mm, a channel density CD greater than or equal to 62 channels per cm2, an average bulk porosity % P greater than or equal to 50%, and a median pore diameter d50 ranging from between 4.0 μm and 30.0 μm.

SELECTIVE CATALYTIC REDUCTION CATALYST COMPOSITION

A SCR catalyst composition comprises a SCR catalyst; and a binder comprising a porous inorganic material, wherein the porous inorganic material comprises a disordered arrangement of delaminated layers, has a disordered porous structure, and has a multimodal pore size distribution comprising at least a first modal maximum having a macroporous or mesoporous pore size and a second modal maximum having a microporous pore size. The SCR catalyst composition can be manufactured using the method comprising the steps of: (i) providing an inorganic material having a layered structure; (ii) contacting the material with a cationic surfactant to form a swollen material; (iii) agitating the swollen material to form an agitated material; and (iv) calcining the agitated material to recover a delaminated inorganic material, wherein an SCR catalyst is mixed with the inorganic material prior to step (iv). 1. A selective catalytic reduction (SCR) catalyst composition comprising:a SCR catalyst; anda binder comprising a porous inorganic material,wherein the porous inorganic material comprises a disordered arrangement of delaminated layers, has a disordered porous structure, and has a multimodal pore size distribution comprising at least a first modal maximum having a macroporous or mesoporous pore size and a second modal maximum having a microporous pore size.2. The SCR catalyst composition of claim 1 , wherein the multimodal pore size distribution is bimodal.3. The SCR catalyst composition of claim 1 , wherein a powder X-ray diffraction pattern of the porous inorganic material obtained using Cu Kα radiation is devoid of peaks at 2θ values of 10° or less.4. The SCR catalyst composition of claim 1 , wherein the first modal maximum has a mesoporous and/or macroporous pore size.5. The SCR catalyst of claim 1 , wherein the delaminated layers are delaminated silicate layers.6. The SCR catalyst composition of claim 1 , wherein the porous inorganic material comprises one or more of: a clay ...

CATALYZED SCR FILTER AND EMISSION TREATMENT SYSTEM

Provided is a catalyst article for simultaneously remediating the nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The catalyst article has a soot filter coated with a material effective in the Selective Catalytic Reduction (SCR) of NOx by a reductant, e.g., ammonia. 1. A catalyst article consisting essentially of a wall flow monolith and a catalytic material , wherein the wall flow monolith has a plurality of longitudinally extending passages fatined by longitudinally extending walls bounding and defining said passages , wherein the passages comprise inlet passages having an open inlet end and a closed outlet end , and outlet passages having a closed inlet end and an open outlet end , the wall flow monolith has a porosity of from 50% to 60% and an average pore size of from 10 to 25 microns , and the wall flow monolith contains the catalytic material;{'sup': '3', 'wherein the catalytic material comprises an SCR catalyst composition including a slurry-loaded washcoat of a zeolite and base metal selected from one or more of a copper and iron component, the washcoat permeating the walls at a loading up to 2.4 g/in, the wall flow monolith having integrated, NOx and particulate removal efficiency in which presence of the catalytic material in the wall flow monolith catalyzes the oxidation of soot.'}2. The catalyst article of claim 1 , wherein the SCR catalyst composition permeates the walls of the monolith at a concentration of at least 1.3 g/in.3. The catalyst article of claim 2 , wherein there is from 1.6 to 2.4 g/inof SCR catalyst composition disposed on the wall flow monolith.4. The catalyst article of claim 1 , wherein the SCR catalyst composition is effective to catalyze the reduction of NOx at a temperature below about 600° C. and is able to aid in regeneration of the wall flow monolith by lowering the temperature at which soot captured by the wall flow monolith is combusted.5. The catalyst article of ...

Nano-sized functional binder

Described are catalytic articles comprising a substrate having a washcoat on the substrate, the washcoat containing a catalytic component having a first average (D50) particle size and a functional binder component having a second average (D50) particle size in the range of about 10 nm to about 1000 nm, wherein the ratio of the first average (D50) particle size to the second average (D50) particle size is greater than about 10:1. The catalytic articles are useful in methods and systems to purify exhaust gas streams from an engine.

APPARATUS FOR COATING A FILTER SUBSTRATE

An apparatus of coating a filter substrate comprising a plurality of channels and an apparatus is disclosed. The apparatus comprises: (i) a containment means for receiving a pre-determined amount of the liquid; and (ii) a liquid dosing head arranged to dispense the pre-determined amount of the liquid into the containment means over an upper end of the filter substrate. The containment means is locatable at an upper end of the filter substrate; and the liquid dosing head comprises a plurality of apertures for dispensing the liquid onto the upper end of the filter substrate. 2. The apparatus according to further comprising (iii) means for applying a vacuum to a lower end of the filter substrate.3. The apparatus according to claim 1 , wherein the pre-determined amount of the liquid is a pre-determined volume of the liquid.4. The apparatus according to claim 1 , wherein the pre-determined amount of the liquid is a single dose of the liquid.5. The apparatus according to claim 1 , wherein the containment means comprises a sealing means for preventing the liquid from flowing from the upper end face of the filter substrate and onto an exterior side surface of the filter substrate claim 1 , wherein the sealing means comprises at least one inflatable collar.6. The apparatus according to claim 1 , wherein the containment means comprises a template for covering an area or areas of an upper end face of the filter substrate.7. The apparatus according to claim 1 , wherein the filter substrate comprises a plurality of channels claim 1 , wherein each channel has an open end and a closed end.8. The apparatus according to claim 2 , wherein the pre-determined amount of the liquid is a pre-determined volume of the liquid.9. The apparatus according to claim 2 , wherein the pre-determined amount of the liquid is a single dose of the liquid.10. The apparatus according to claim 2 , wherein the containment means comprises a sealing means for preventing the liquid from flowing from the upper ...

REGENERATION METHOD AND DEVICE OF POISONING HONEYCOMB CATALYST

The present invention provides a regeneration method and a regeneration device of a poisoning honeycomb catalyst, and belongs to the field of catalyst regeneration. The regeneration method of the poisoning honeycomb catalyst provided by the present invention includes the following steps: carrying out microwave heating treatment on the poisoning honeycomb catalyst, and then spraying liquid nitrogen into cells of the poisoning honeycomb catalyst so that the poisoning honeycomb catalyst is regenerated. The regeneration method provided by the present invention is simple, and the efficiency of the regenerated catalyst can be increased by 90% more than the original efficiency. According to the regeneration device of a poisoning honeycomb catalyst provided by the present invention, the catalyst regeneration is carried out by using the regeneration device provided by the present invention, the regeneration operation is simple, and the catalytic efficiency of the regenerated catalyst is improved. 1. A regeneration method of a poisoning honeycomb catalyst , comprising the following steps:carrying out microwave heating treatment on the poisoning honeycomb catalyst, and then spraying liquid nitrogen into cells of the poisoning honeycomb catalyst so that the poisoning honeycomb catalyst is regenerated.2. The regeneration method according to claim 1 , wherein the microwave heating treatment and liquid nitrogen spraying treatment are carried out repeatedly for 3-5 times.3. The regeneration method according to claim 1 , wherein through-cells are formed in the poisoning honeycomb catalyst claim 1 , and side lengths or diameters of the cells are 3-12 mm.4. The regeneration method according to claim 1 , wherein an active ingredient of the poisoning honeycomb catalyst comprises VO-WO/TiO.5. The regeneration method according to claim 1 , wherein the power of the microwave heating treatment is 600-1200 W; the temperature of microwave heating is 400-480° C.; and the time of microwave ...

EXHAUST GAS TREATMENT SYSTEM

Provided are an exhaust gas treatment system and method for regenerating the exhaust gas treatment system. The exhaust gas treatment system comprises: an oxidation catalyst assembly; a particulate filter downstream of the oxidation catalyst assembly; a reducing agent dosing device downstream of the particulate filter; and a selective catalytic reduction device downstream of the reducing agent dosing device. The oxidation catalyst assembly comprises a first oxidation catalyst to selectively oxidize hydrocarbons in the exhaust stream, at least partially, with substantially no concomitant oxidation of sulfur oxides in the exhaust stream; and a second oxidation catalyst downstream of the first oxidation catalyst, to oxidize hydrocarbons or partially oxidized hydrocarbons having slipped through the first oxidation catalyst, as well as to concomitantly oxidize NO to NO. The system can be regenerated when running on high-sulfur fuels to regenerate the particulate filter as well as remove sulfur species deposited on the system catalysts. 1. An exhaust gas treatment system , arranged for treatment of an exhaust stream that results from a combustion in a combustion engine , the exhaust treatment system comprising: a first oxidation catalyst arranged to selectively oxidize hydrocarbons present in the exhaust stream, at least partially, with substantially no concomitant oxidation of sulfur oxides present in the exhaust stream; and', {'sub': '2', 'a second oxidation catalyst arranged downstream of the first oxidation catalyst, arranged to oxidize hydrocarbons or partially oxidized hydrocarbons having slipped through the first oxidation catalyst, as well as to concomitantly oxidize NO to NO;'}], 'an oxidation catalyst assembly comprisinga particulate filter arranged downstream of the oxidation catalyst assembly;a reducing agent dosing device arranged downstream of the particulate filter, and arranged to supply a reducing agent into the exhaust stream; anda selective catalytic ...

NITROGEN OXIDES (NOx) STORAGE CATALYST

A catalyst for storing nitrogen oxides (NO) in an exhaust gas from a lean burn engine comprising a NOstorage material and a substrate, wherein the NOstorage material comprises a NOstorage component and an NO oxidation promoter on a support material, wherein the NO oxidation promoter is manganese or an oxide, hydroxide or carbonate thereof. 1. A catalyst for storing nitrogen oxides (NO) in an exhaust gas from a lean burn engine comprising a NOstorage material and a substrate , wherein the NOstorage material comprises a NOstorage component and an NO oxidation promoter on a support material , wherein the NO oxidation promoter is manganese or an oxide , hydroxide or carbonate thereof.2. A catalyst according to claim 1 , wherein the storage material comprises a mixed oxide of magnesium oxide (MgO) and aluminium oxide (AlO).3. A catalyst according to claim 1 , wherein the NOstorage component comprises (i) an oxide claim 1 , a carbonate or a hydroxide of an alkali metal; (ii) an oxide claim 1 , a carbonate or a hydroxide of an alkaline earth metal; and/or (iii) an oxide claim 1 , a carbonate or a hydroxide of a rare earth metal claim 1 , preferably the NOstorage component comprises an oxide claim 1 , a carbonate or a hydroxide of barium (Ba).4. A catalyst according to claim 1 , wherein the NOstorage material further comprises a platinum group metal (PGM) selected from platinum claim 1 , palladium and a combination of platinum and palladium.5. A catalyst according to claim 1 , wherein the NOstorage material does not comprise at least one of platinum and palladium.6. A catalyst according to comprising a NOstorage region disposed on the substrate claim 1 , wherein the NOstorage region comprises the NOstorage material.7. A catalyst according to claim 6 , wherein the NOstorage region further comprises a NOtreatment material claim 6 , wherein the NOtreatment material comprises at least one of a first NOtreatment component and a second NOtreatment component.8. A catalyst ...

GASOLINE PARTICULATE FILTER

A catalytic wall-flow monolith for use in an emission treatment system comprises a porous substrate and a three-way catalyst (TWC), wherein the TWC is distributed substantially throughout the porous substrate and wherein the TWC comprises: 2. The catalytic wall-flow monolith according to claim 1 , wherein the OSC comprises a ceria.3. The catalytic wall-flow monolith according to claim 2 , wherein the OSC comprises a mixed oxide of cerium and zirconium; a mixed oxide of cerium claim 2 , zirconium claim 2 , and neodymium; a mixed oxide of praseodymium and zirconium; a mixed oxide of cerium claim 2 , zirconium and praseodymium; or a mixed oxide of praseodymium claim 2 , cerium claim 2 , lanthanum claim 2 , yttrium claim 2 , zirconium and neodymium.4. The catalytic wall-flow monolith according to claim 3 , wherein the OSC comprises praseodymium and is present at 2-10 wt %.5. The catalytic wall-flow monolith according to claim 3 , wherein the OSC comprises praseodymium and wherein the first plurality of channels comprises an on wall TWC coating comprising the OSC comprising praseodymium.6. The catalytic wall-flow monolith according to claim 1 , wherein the ratio by weight of OSC to alumina is about 75:25.7. The catalytic wall-flow monolith according to claim 1 , wherein the one or more platinum group metals is selected from Pt claim 1 , Pd and Rh claim 1 , or combinations of two or more thereof.8. The catalytic wall-flow monolith according to claim 1 , wherein the TWC is homogenous throughout the porous substrate.9. The catalytic wall-flow monolith according to claim 1 , wherein the monolith has a first face and a second face defining a longitudinal direction therebetween and first and second pluralities of channels extending in the longitudinal direction claim 1 ,wherein the first plurality of channels is open at the first face and closed at the second face, and wherein the second plurality of channels is open at the second face and closed at the first face,and wherein ...

PARALLEL PASSAGE FLUID CONTACTOR STRUCTURE

A parallel passage fluid contactor structure for chemical reaction processes has one or more segments, where each segment has a plurality of substantially parallel fluid flow passages oriented in an axial direction; cell walls between each adjacent fluid flow passages and each cell wall has at least two opposite cell wall surfaces. The structure also includes at least one active compound in the cell walls and multiple axially continuous conductive filaments either embedded within the cell walls or situated between the cell wall surfaces. The conductive filaments are at least one of thermally and electrically conductive, are oriented in axially, and are in direct contact with the active compound, and are operable to transfer thermal energy between the active material and the conductive filaments. Heating of the conductive filaments may be used to transfer heat to the active material in the cell walls. Methods of manufacturing the structure are discussed. 1. A temperature swing adsorption process for separating first and second fluid components , comprising: a plurality of substantially parallel fluid flow passages oriented in said axial direction;', 'cell walls situated between each adjacent one of said fluid flow passages, each said cell wall comprising at least a first and a second cell wall surfaces, and additionally comprising at least one adsorbent material; and', 'a plurality of axially continuous conductive filaments either embedded in said cell walls or situated between said surfaces of said first and second cell walls, wherein said axially continuous conductive filaments are at least one of thermally and electrically conductive, are oriented in said axial direction, and are additionally in direct contact with said at least one adsorbent material of said cell walls and are operable to transfer thermal energy between said at least one adsorbent material and said conductive filaments., 'admitting said first and second fluid components into a parallel passage ...

APPARATUS FOR PRODUCING LOWER OLEFIN-CONTAINING GAS AND METHOD FOR PRODUCING LOWER OLEFIN-CONTAINING GAS

An apparatus and method for producing a lower olefin-containing gas including propylene from CHand COvia CO and Hwith high activity and high selectivity. The apparatus is provided with: a synthetic gas production unit to which a gas containing CHand COis supplied from a first supply unit, and which generates a synthetic gas containing CO and Hwhile heating a first catalytic structure; a gas production unit to which the synthetic gas is supplied and which generates a lower olefin-containing gas including propylene while heating a second catalytic structure; and a detection unit which detects propylene discharged from the gas production unit, in which the first catalytic structure includes first supports having a porous structure and a first metal fine particle in the first supports, the first supports have a first channels, the first metal fine particle is present in the first channels, the second catalyst structure includes second supports having a porous structure and a second metal fine particle in the second supports, the second supports have a second channels, and a portion of the second channels have an average inner diameter of 0.95 nm or less. 1. An apparatus for producing a lower olefin-containing gas containing propylene , the apparatus comprising:a first supply unit that supplies a raw material gas comprising methane and carbon dioxide;a synthesis gas production unit that comprises a first catalyst structure, receives supply of the raw material gas from the first supply unit, and produces a synthesis gas comprising carbon monoxide and hydrogen from methane and carbon dioxide in the raw material gas while heating the first catalyst structure;a second supply unit that supplies the synthesis gas discharged from the synthesis gas production unit;a lower olefin-containing gas production unit that comprises a second catalyst structure, receives supply of the synthesis gas from the second supply unit, and produces, from carbon monoxide and hydrogen in the ...

FUNCTIONAL STRUCTURE

A functional structure which can resist a decrease in the function of the functional material and thus have a long life, can be free from the need for complicated replacement operation, can contribute to resource-saving, and can exhibit high catalytic activity when used, for example, as a catalyst. The functional structure includes supports each having porous structure and including a zeolite-type compound, and at least one functional substance present in the supports, in which each of the supports has channels communicating with one another, the functional material is present at least in the channel of each of the supports, and the supports have an average external size of 20 μm or less. 1. A functional structure comprising:supports each having a porous structure and including a zeolite-type compound; andat least one functional material present in the supports, whereineach of the supports has channels communicating with one another,the functional material is present at least in the channel of each of the supports, andthe supports have an average external size of 20 μm or less.2. The functional structure according to claim 1 , whereinthe channels have any one of a one-dimensional pore, a two-dimensional pore, and a three-dimensional pore defined by framework structure of the zeolite-type compound, and have an enlarged pore portion different from the one-dimensional pore, the two-dimensional pore, and the three-dimensional pore, andthe functional material is present at least in the enlarged pore portion.3. The functional structure according to claim 2 , wherein the enlarged pore portion connects a plurality of pores constituting any one of the one-dimensional pore claim 2 , the two-dimensional pore claim 2 , and the three-dimensional pore.4. The functional structure according to claim 2 , wherein the functional material has an average particle size larger than an average inner diameter of the channels and equal to or smaller than an inner diameter of the enlarged ...

Apparatus and method for gaseous emissions treatment with induction heating of loop conductors

An assembly for treating gaseous emissions includes a substrate body having cells for the passages of emissions gas. Lengths of metal wire are located in selected ones of the cells and an induction heating coil is mounted adjacent the substrate body for generating a varying electromagnetic field. In this way the metal wires are heated, resulting in heating of the substrate body and heating of exhaust gas flowing in the cells. Individual lengths of wire or wire lengths that are joined together are configured as loop conductors. 1. An assembly for treating gaseous emissions comprising a substrate body having a plurality of cells for the passage of emissions gas , metal wire located in each of a first set of the plurality of cells , and an induction heating coil mounted adjacent the substrate body for generating a varying electromagnetic field , thereby inductively to heat the metal wire and thereby to heat the substrate body , wherein the metal wire is configured as a loop conductor.2. The assembly of claim 1 , there being a length of metal wire in each of the first set of cells claim 1 , the wire being hollow.3. The assembly of claim 1 , wherein the metal wire comprises lengths thereof in respective ones of the first set of cells the wire lengths joined together to form a continuous inductance loop conductor.4. The assembly of claim 1 , the substrate body having a front for entry of gaseous emissions to be treated and a back for exit of treated gaseous emissions claim 1 , joins between the wire lengths being at the front and back ends.5. The assembly of claim 1 , the substrate body having a front for entry of gaseous emissions to be treated and a back for exit of treated gaseous emissions claim 1 , the loop further including a portion located in front of the front end for intercepting and inductively preheating gaseous emissions entering the substrate body.6. The assembly as claimed in claim 1 , the location of the metal wire selected to obtain a generally uniform ...

Apparatus and method for gaseous emissions treatment using front end induction heating

An assembly for treating gaseous emissions includes a substrate body having a front and a rear and cells for the passage of emissions gas. Inductance heating metal is located in the substrate body and an induction heating coil is mounted adjacent the substrate body for generating a varying electromagnetic field for inductively heating the metal and thereby heating the substrate body. A greater concentration of the metal is located near the front of the substrate body than near the rear. 1. An assembly for treating gaseous emissions comprising a substrate body having a front end , a rear end , a plurality of cells for the passage of emissions gas , inductance heating metal located in the substrate body , and an induction heating coil mounted adjacent the substrate body for generating a varying electromagnetic field , thereby inductively to heat the metal and thereby to heat the substrate body , wherein a greater concentration of the metal is located near the front end of the substrate body than near the rear end of the substrate body.2. The assembly of claim 1 , wherein the inductance heating metal is respective lengths of metal wire located in each of a first set of the plurality of cells3. The assembly of claim 1 , wherein claim 1 , the inductance heating metal is confined to a front part of the substrate body and the induction heating coil is mounted adjacent only a front part of the substrate body.4. The assembly of claim 2 , wherein at least some of the lengths of metal wire are wire segments shorter than the full length of the substrate body.5. The assembly of claim 2 , wherein end portions of the lengths of wire project from a front face of the substrate body at the front end.6. The assembly of claim 5 , wherein the induction heating coil extends beyond said front face so that a part thereof is mounted adjacent the projecting wire end portions.7. The assembly of claim 5 , wherein the projecting wire end portions taper towards the ends of the wires.8. The ...

USE OF MANGANESE OXIDE AND ACTIVATED CARBON FIBERS FOR REMOVING A PARTICLE, VOLATILE ORGANIC COMPOUOND OR OZONE FROM A GAS

The present invention provides for a device for reducing a volatile organic compound (VOC) content of a gas comprising a manganese oxide (MnO) catalyst. The manganese oxide (MnO) catalyst is capable of catalyzing formaldehyde at room temperature, with complete conversion, to COand water vapor. The manganese oxide (MnO) catalyst itself is not consumed by the reaction of formaldehyde into COand water vapor. The present invention also provides for a device for reducing or removing a particle, a VOC and/or ozone from a gas comprising an activated carbon filter (ACF) on a media that is capable of being periodically regenerated. 19.-. (canceled)10. A method for reducing formaldehyde content of a gas , comprising:{'sup': 2', '−1, 'at room temperature, contacting the formaldehyde-containing gas with a manganese-containing catalyst comprising majority non-stoichiometric manganese oxide-hydroxide particles having a Brunner Emmet and Teller (BET) surface area of at least 100 mg, thereby obtaining a gas having a reduced formaldehyde content as compared to the gas prior to contact with the manganese-containing catalyst.'}11. The method of claim 10 , wherein the manganese-containing catalyst comprises majority nsutite.12. The method of claim 10 , wherein the manganese-containing catalyst comprises greater than 90% nsutite.13. The method of claim 10 , wherein the manganese-containing catalyst comprises greater than 95% nsutite.14. The method of claim 10 , wherein the manganese-containing catalyst further comprises cryptomelane.15. The method of claim 11 , wherein the manganese-containing catalyst further comprises cryptomelane.16. The method of claim 12 , wherein the manganese-containing catalyst further comprises cryptomelane.17. The method of claim 12 , wherein the manganese-containing catalyst consists essentially of nsutite and cryptomelane particles.18. The method of claim 13 , wherein the manganese-containing catalyst consists essentially of nsutite and cryptomelane ...

EXHAUST GAS PURIFICATION CATALYST

Provided is an exhaust gas purification catalyst with excellent durability against exhaust gas including a poisoning substance. The exhaust gas purification catalyst includes a porous substrate, a catalyst coating layer formed on the porous substrate, and a dummy coating layer formed on the outermost surface of the catalyst coating layer. The catalyst coating layer has a carrier and a noble metal catalyst supported on the carrier. The dummy coating layer includes a carrier having at least alumina and does not include a noble metal catalyst. The dummy coating layer is formed to have a length which, from the end on the exhaust gas inlet side, is 10% to 70% of the entire length of the catalyst coating layer along the exhaust gas flow direction. 1. An exhaust gas purification catalyst , disposed in an exhaust gas passage of an internal combustion engine and purifying an exhaust gas discharged from the internal combustion engine ,the exhaust gas purification catalyst comprising:a porous substrate;a catalyst coating layer formed on the porous substrate; anda dummy coating layer formed on the outermost surface of the catalyst coating layer, whereinthe catalyst coating layer has a carrier and a noble metal catalyst supported on the carrier; andthe dummy coating layer is constituted by alumina, does not include a noble metal catalyst, and is formed to have a length which, from an end on an exhaust gas inlet side, is 10% to 70% of an entire length of the catalyst coating layer along an exhaust gas flow direction; anda specific surface area of the alumina included in the dummy coating layer is larger than that of the carrier included in the catalyst coating layer.2. The exhaust gas purification catalyst according to claim 1 , wherein the alumina content in the dummy coating layer per 1 L of a catalyst volume is 5 g/L to 15 g/L.3. The exhaust gas purification catalyst according to claim 1 , wherein an average thickness of the dummy coating layer is 5 μm to 15 μm.4. The exhaust ...

APPARATUS AND METHOD FOR PRODUCING HYDROCARBONS

An apparatus and method for producing hydrocarbons including aromatic hydrocarbons and lower olefins including propylene from CHand COthrough CO and Hwith high activity and high selectivity. The apparatus is provided with: a synthetic gas production unit to which a gas containing CHand COis supplied from a first supply unit, and which generates a synthetic gas containing CO and Hwhile heating a first catalyst structure; a production unit to which the synthetic gas is supplied and which generates hydrocarbons including aromatic hydrocarbons having 6-10 carbon atoms and lower olefins including propylene while heating a second catalyst structure; and a detection unit which detects propylene and the aromatic hydrocarbons discharged from the production unit, in which the first catalyst structure includes first supports having a porous structure and a first metal fine particle in the first supports, the first supports have a first channels, the first metal fine particle is present in the first channels, the second catalyst structure includes second supports having a porous structure and a second metal fine particle in the second supports, the second supports have a second channels, and a portion of the second channels have an average inner diameter of 0.95 nm or less. 1. An apparatus for producing hydrocarbons including lower olefins including propylene and aromatic hydrocarbons having six or more and ten or less carbon atoms , the apparatus comprising:a first supply unit that supplies a raw material gas comprising methane and carbon dioxide;a synthesis gas production unit that comprises a first catalyst structure, receives supply of the raw material gas from the first supply unit, and produces a synthesis gas comprising carbon monoxide and hydrogen from methane and carbon dioxide in the raw material gas while heating the first catalyst structure;a second supply unit that supplies the synthesis gas discharged from the synthesis gas production unit;a hydrocarbon production ...

EXHAUST SYSTEM AND FEATURES THEREOF

An exhaust system that includes a catalytic converter, selective catalytic reduction system, a muffler and, for certain applications, a diesel particulate filter that each include at least one filter that has an electric heating element, a metallic coating and a plurality of metal rods extending therethrough. The combination of elements are configured to heat the internal housings of the exhaust system and disrupt the direction of flow of exhaust gases which contain harmful toxic gases and pollutants and aid in removing and/or reducing said toxic gases and pollutants. 1. A catalytic converter , comprising:an external shell delimited at an inlet port and an outlet port;at least one heater arranged within the external shell that is configured to heat toxic gases and particulate matter that enters the catalytic and at least reduce said eliminate said gases and particulate matter prior to said gases and particulate matter exiting the catalytic converter.2. The catalytic converter of claim 1 , further comprising a second shell spaced from the external shell and a plurality of magnets arranged between the external shell and the second shell.3. The catalytic converter of claim 1 , wherein a plurality of heaters are arranged in the external shell with a first heater arranged near the inlet port and a second heater arranged near the outlet port.4. The catalytic converter of claim 1 , further comprising a disrupter plate arranged adjacent the at least one heater.5. The catalytic converter of claim 1 , further comprising a filter arranged within the external shell between the inlet port and the outlet port that is at least one of coated and sprayed with noble metals to aid in maintaining an internal temperature of the catalytic converter.6. An exhaust system claim 1 , comprising:a catalytic converter that includes a housing in which an electric heating element is at least partially arranged and in which a filter is arranged that has a metallic coating and includes a plurality ...

EXHAUST GAS CLEANING CATALYST

The exhaust gas cleaning catalyst according to the present invention is provided with a cylindrical substrate and a catalyst coat layer formed on the surface of the substrate A ratio of the length L in the cylindrical axis direction of the substrate and the diameter D of a cross section orthogonal to the cylindrical axis direction is denoted by (L/D)≦0.8. The coat density of the catalyst coat layer differs between an upstream side portion that includes the exhaust gas inlet-side end of the substrate and a downstream side portion that includes the exhaust gas outlet-side end of the substrate The coat density A in the upstream side portion is lower than the coat density B in the downstream side portion (A Подробнее

OXIDATION CATALYST FOR A STOICHIOMETRIC NATURAL GAS ENGINE

An oxidation catalyst for treating an exhaust gas produced by a stoichiometric natural gas (NG) engine comprising a substrate and a catalytic material for oxidising hydrocarbon (HC), wherein the catalytic material for oxidising hydrocarbon (HC) comprises a molecular sieve and a platinum group metal (PGM) supported on the molecular sieve, wherein the molecular sieve has a framework comprising silicon, oxygen and optionally germanium. 1. An oxidation catalyst for treating an exhaust gas produced by a stoichiometric natural gas (NG) engine comprising:a substrate having an inlet end and an outlet end;{'sub': '3); and', 'a first region comprising a catalytic material for oxidising ammonia (NH'}a second region comprising a catalytic material for oxidising hydrocarbon (HC);wherein the catalytic material for oxidising hydrocarbon (HC) comprises a molecular sieve and a platinum group metal (PGM) supported on the molecular sieve, wherein the molecular sieve has a framework comprising silicon and oxygen or a framework comprising silicon, oxygen and germanium; andthe second region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first region.2. An oxidation catalyst according to claim 1 , wherein the catalytic material for oxidising ammonia (NH) comprises a molecular sieve and optionally a transition metal claim 1 , which is supported on the molecular sieve.3. An oxidation catalyst according to claim 2 , wherein the molecular sieve is a small pore molecular sieve.4. An oxidation catalyst according to claim 2 , wherein the molecular sieve is an aluminosilicate molecular sieve or a silico-aluminophosphate (SAPO) molecular sieve.5. An oxidation catalyst according to claim 2 , wherein the molecular sieve has a framework type selected from CHA claim 2 , LEV claim 2 , ERI claim 2 , DDR claim 2 , KFI claim 2 , EAB claim 2 , PAU claim 2 , MER claim 2 , AEI claim 2 , GOO claim 2 , YUG claim 2 , GIS claim 2 , VNI and ...

DIESEL OXIDATION CATALYST COMPRISING PLATINUM GROUP METAL NANOPARTICLES

The present invention relates to diesel oxidation catalyst compositions and catalyst articles, wherein the compositions and articles include a plurality of platinum group nanoparticles substantially in fully reduced form, wherein the nanoparticles have an average particle size of about 1 to about 10 nm and at least about 90% of the nanoparticles have a particle size of +/− about 2 nm of the average particle size. Such compositions can further include a refractory metal oxide material, wherein the nanoparticles and refractory metal oxide material can be combined within the same coating on a substrate or can be applied sequentially on a substrate. The nanoparticles can advantageously be substantially free of halides, alkali metals, alkaline earth metals, sulfur compounds, and boron compounds. Methods of preparing and using such compositions and catalyst articles (e.g., for the treatment of diesel exhaust gas streams) are also provided herein. 1. A diesel oxidation catalyst composition , the composition comprising: wherein about 90% or more of the platinum group metal is in fully reduced form,', 'wherein the nanoparticles have an average particle size of about 1 to about 10 nm and at least about 90% of the nanoparticles have a particle size of +/− about 2 nm of the average particle size; and, optionally, a refractory metal oxide material., 'a plurality of platinum group metal nanoparticles selected from the group consisting of Pt, Pd, Au, Ag, Ru, Rh, Jr, Os, alloys thereof, and mixtures thereof,'}2. The diesel oxidation catalyst composition of claim 1 , wherein at least about 90% of the nanoparticles have a particle size +/− about 1 nm of the average particle size.3. The diesel oxidation catalyst composition of claim 1 , wherein at least about 95% of the nanoparticles have a particle size +/−2 nm of the average particle size.4. The diesel oxidation catalyst composition of claim 1 , wherein at least about 95% of the nanoparticles have a particle size +/− about 1 nm of ...

Methods Utilizing Non-Zeolitic Metal-Containing Molecular Sieves Having The CHA Crystal Structure

Catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, and methods for treating exhaust gas incorporating such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures. 119-. (canceled)20. A catalyst comprising:an ion-exchanged Cu-SAPO-34 non-zeolitic molecular sieve having a CHA crystal structure; wherein the Cu content of the Cu-SAPO-34 non-zeolitic molecular sieve on a CuO basis is in the range of about 1% to about 5% by weight;{'sup': '2', 'wherein the Cu-SAPO-34 non-zeolitic molecular sieve has a BET surface area greater than 350 m/g;'}{'sub': 2', '2', '2', '3, 'sup': 3', '−1, 'wherein the catalyst is effective to promote the reaction of ammonia with nitrogen oxides (NOx) to form nitrogen and HO selectively in an exhaust gas stream at 200° C. when the catalyst has been deposited on a honeycomb substrate having a cell density of 400 cpsi at a loading between 2 and 2.5 g/inand tested at a space velocity of 80,000 hrwhere the feed stream comprises a mixture of 10% O, 5% HO, 500 ppm NO and 500 ppm NHto provide at least 80% NOx conversion; and'}{'sub': '2', 'wherein the catalyst is effective to make less than 5 ppm NO over a temperature range of 200° C. to 450° C.'}21. The catalyst of claim 20 , wherein the Cu-SAPO-34 non-zeolitic molecular sieve has a BET surface area in the range of 375 m/g to 600 m/g.22. The catalyst of claim 20 , wherein the Cu-SAPO-34 non-zeolitic molecular sieve contains a secondary metal.23. The catalyst of claim 22 , wherein the secondary metal comprises zirconium.24. The catalyst of claim 20 , wherein the Cu content of the Cu-SAPO-34 non-zeolitic molecular sieve on a CuO basis is in the range of about 2% to 4 by weight.25. The catalyst of claim 20 , wherein the catalyst is effective to provide at least about 85% NOx conversion in the ...

CATALYST CARRIER MODULE FOR LARGE-CAPACITY CATALYTIC REACTOR

Provided is a catalyst carrier module for a large-capacity catalyst reactor, which can be assembled in a large-capacity structure by laminating a flat plate and a wave plate to be fixed in a can without brazing the flat plate and the wave plate constituting a cell forming body, for use in a catalytic reactor requiring a large-capacity exhaust gas treatment. The catalyst carrier module (or block) includes: a can of a rectangular tube shape having an inlet and an outlet; at least one cell forming body in which a plurality of hollow cells are formed by alternately laminating a wave plate and a flat plate which are coated with a catalyst on a surface thereof and inserted into the can; and a fixing unit installed at the inlet and the outlet of the can to prevent the at least one cell forming body from detaching from the can. 1. A catalyst carrier module comprising:a can of a rectangular tube shape having an inlet and an outlet;at least one cell forming body in which a plurality of hollow cells are formed by alternately laminating a wave plate and a flat plate which are coated with a catalyst on a surface thereof and inserted into the can; anda fixing unit installed at the inlet and the outlet of the can to prevent the at least one cell forming body from detaching from the can.2. The catalyst carrier module of claim 1 , wherein the fixing unit comprises a plurality of fixing bars installed at the inlet and the outlet of the can to prevent the at least one cell forming body from being detached from the can.3. The catalyst carrier module of claim 2 , wherein each of the plurality of fixing bars is fixed to both sides of the can using a fastening member.4. The catalyst carrier module of claim 2 , wherein each of the plurality of fixing bars is bonded to the can by one of brazing claim 2 , welding claim 2 , soldering claim 2 , and diffusion bonding.5. The catalyst carrier module of claim 1 , wherein the fixing unit comprises first to fourth fixing members both sides of which ...

EXHAUST GAS FILTER

An exhaust gas filter for purifying exhaust gases including particulate matter discharged from an internal combustion engine includes a honeycomb structure whose axial direction matches an exhaust gas flow, a plug portion which selectively plugs upstream end faces of the honeycomb structure which faces the exhaust gas flow, and catalyst carried on the honeycomb structure. 1. An exhaust gas filter which purifies exhaust gases including particulate matter discharged from an internal combustion engine comprising:a honeycomb structure whose axial direction is a flow direction of the exhaust gases;a plug portion which partially plugs an upstream end face of the honeycomb structure which faces the exhaust gas flow; anda catalyst carried in the honeycomb structure,wherein the honeycomb structure has a plurality of partition walls, cells surrounded by the partition walls, with a first region not carrying the catalyst being disposed on the partition walls at an upstream side of the exhaust gas flow and a second region carrying the catalyst on the partition walls at a downstream side of the exhaust gas flow,wherein the partition walls have pores communicating between adjacent cells,wherein the plurality of the cells comprise open cells open in the axial direction and plugged cells whose upstream end faces face the exhaust gas flow and are plugged by the plug portion.2. The exhaust gas filter as set forth in claim 1 , wherein an axial direction length of the first region is set to the shortest length at which a maximum trapping ratio of the particular matter is reached.3. The exhaust gas filter as set forth in claim 1 , wherein the catalyst-coat layers including the catalyst are disposed on the partition cells in the second region and a concentration thereof is not less than 100 g/L.4. The exhaust gas filter as set forth in claim 3 , wherein a catalyst-coat layer in the open cells has a first end and a second end which are opposed to each other in a direction in which the ...

GLASS CATALYST COMPOSITIONS FOR IMPROVED HYDROTHERMAL DURABILITY

A diesel soot filter includes a substrate having a surface disposed at least partially within a fluid path of the diesel soot filter. A glass catalyst is disposed on the surface of the substrate such that an exhaust gas contacts at least a portion of a surface of the glass catalyst as the exhaust gas moves within the diesel soot filter. The glass catalyst comprises a plurality of alkali metal ions disposed within the glass catalyst and releasable to the surface of the glass catalyst at a controlled rate and the alkali metal ions combust with the soot as the exhaust gas travels along the fluid path. An oxide basis of the glass catalyst comprises Silicon (Si), Potassium (K), Cesium (Ce), and Zirconium (Zr) 1. A diesel soot filter comprising:a substrate having a surface disposed at least partially within a fluid path of the diesel soot filter; and 'a plurality of alkali metal ions disposed within the glass catalyst and releasable to the surface of the glass catalyst at a controlled rate sufficiently fast to supplement the lost alkali metal ions at the surface of the glass catalyst and sufficiently slow to extend the catalytic lifespan of the filter, wherein the alkali metal ions combust with the soot as the exhaust gas travels along the fluid path, and wherein an oxide basis of the glass catalyst comprises Silicon (Si), Potassium (K), Cesium (Ce), and Zirconium (Zr).', 'a glass catalyst disposed on the surface of the substrate such that an exhaust gas contacts at least a portion of a surface of the glass catalyst as the exhaust gas moves within the diesel soot filter, the glass catalyst comprising2. A diesel soot filter as defined in claim 1 , wherein the weight percentage of the oxide basis of the glass catalyst is about 45 At % Si claim 1 , 45 At % K claim 1 , 8 At % Ce claim 1 , and 2 At % Zr.3. A diesel soot filter as defined in claim 1 , wherein the weight percentage of the oxide basis of the glass catalyst comprises approximately 0 At % Ce to approximately 10 At ...

METHOD FOR ACTIVATING A FIXED CATALYST BED WHICH CONTAINS MONOLITHIC SHAPED CATALYST BODIES OR CONSISTS OF MONOLITHIC SHAPED CATALYST BODIES

A process for activating a fixed catalyst bed is disclosed. The fixed catalyst bed includes monolithic shaped catalyst bodies or include monolithic shaped catalyst bodies including at a first metal selected from Ni, Fe, Co, Cu, Cr, Pt, Ag, Au and Pd, and a second component selected from Al, Zn and Si. The fixed catalyst bed, for activation, is treated with an aqueous base having a strength of not more than 3.5% by weight. The base is selected from alkali metal hydroxides, alkaline earth metal hydroxides and mixtures thereof. The fixed catalyst bed has a temperature gradient during the activation and the temperature differential between the coldest point in the fixed catalyst bed and the warmest point in the fixed catalyst bed is kept at not more than 50 K. 1. A process for activating a fixed catalyst bed comprising monolithic shaped catalyst bodies or consisting of monolithic shaped catalyst bodies comprising at least one first metal selected from Ni , Fe , Co , Cu , Cr , Pt , Ag , Au and Pd , and comprising at least one second component selected from Al , Zn and Si , and wherein the fixed catalyst bed , for activation , is subjected to a treatment with an aqueous base having a strength of not more than 3.5% by weight , wherein the base is selected from alkali metal hydroxides , alkaline earth metal hydroxides and mixtures thereof , and wherein the fixed catalyst bed has a temperature gradient during the activation and the temperature differential between the coldest point in the fixed catalyst bed and the warmest point in the fixed catalyst bed is kept at not more than 50 K.2. A process for providing a reactor comprising an activated fixed catalyst bed , in whicha) a fixed catalyst bed comprising monolithic shaped catalyst bodies or consisting of monolithic shaped catalyst bodies comprising at least one first metal selected from Ni, Fe, Co, Cu, Cr, Pt, Ag, Au and Pd, and comprising at least one second component selected from Al, Zn and Si, is introduced into a ...

METHOD FOR PROVIDING A CATALYTICALLY ACTIVE FIXED BED FOR HYDROGENATING ORGANIC COMPOUNDS

Described herein is a process for providing a catalytically active fixed bed for hydrogenation of organic compounds, in which a fixed bed including monolithic shaped bodies as catalyst supports or consisting of monolithic shaped bodies is introduced into a reactor and the fixed bed is then contacted with at least one catalyst or a precursor thereof. The fixed beds laden with a catalyst that are obtained in this way are especially suitable for the hydrogenation of organic compounds in the presence of CO, wherein the conversion is at least 90%. They are notable in that only a very small proportion, if any, of the catalyst introduced is released into the reaction medium. 1. A process for providing a catalytically active fixed bed comprising monolithic shaped bodies as catalyst supports or consisting of monolithic shaped bodies laden with a catalyst comprising at least one metal selected from Ni , Fe , Co , Cu , Cr , Pt , Ag , Au , Pd , Mn , Re , Ru , Rh and Ir , in whicha) a fixed bed comprising monolithic shaped bodies or consisting of monolithic shaped bodies is introduced into a reactor,b) the fixed bed is contacted with a suspension of the at least one catalyst or the precursor thereof in a liquid medium, and the suspension of the at least one catalyst or the precursor thereof is at least partly conducted in a liquid circulation stream, the catalyst or the precursor comprising at least one metal selected from Ni, Fe, Co, Cu, Cr, Pt, Ag, Au, Pd, Mn, Re, Ru, Rh and Ir, to obtain a fixed bed laden with the catalyst or the precursor,c) the laden fixed bed obtained in step b) is optionally subjected to an activation,{'sub': 1', '4, 'd) the laden fixed bed obtained in step b) or the activated fixed bed obtained in step c) is optionally subjected to a treatment with a wash medium selected from water, C-C-alkanols, and mixtures thereof, and'}e) the fixed bed obtained after the activation in step c) or after the treatment in step d) is optionally contacted with a dopant ...

THREE-DIMENSIONALLY STRUCTURED POROUS CATALYST MONOLITH OF STACKED CATALYST FIBERS

A three-dimensionally structured porous catalyst monolith of stacked catalyst fibers with a fiber diameter of less than 1 mm made from one or more continuous fibers or stacked individual fibers, wherein the stacked catalyst fibers are arranged in a regular, recurring stacking pattern of fiber layers to form the three-dimensionally structured monolith, and wherein in each of the stacked fiber layers at least 50 wt % of the fibers are arranged parallel to each other and spatially separated from each other, or in a cobweb pattern, and wherein the side crushing strength of the monolith is at least 60 N. 115-. (canceled)17. The catalyst monolith of claim 16 , wherein the side crushing strength of the catalyst monolith is at least twice the side crushing strength of an individual fiber of which the catalyst monolith is composed.18. The catalyst monolith of claim 16 , wherein the side crushing strength is at least 100 N.19. The catalyst monolith of claim 16 , wherein the fiber diameter is in the range of from 0.2 to less than 1.0 mm.20. The catalyst monolith of claim 16 , wherein the catalyst monolith is in the form of a cylinder with circular or ellipsoidal cross section claim 16 , a cuboid claim 16 , a sphere claim 16 , an ellipsoid claim 16 , a tablet or a polygon.21. The catalyst monolith of claim 16 , wherein at least 50 wt % of the fibers are arranged as linear strands parallel to each other and spatially separated from each other claim 16 , or wherein multiple cobweb patterns are stacked claim 16 , wherein the direction of the strands in each layer is different from the direction in neighboring layers claim 16 , so that a porous structure with contact points of strands of neighboring layers results.22. The catalyst monolith of claim 16 , wherein the catalyst monolith has at least 10 stacked fiber layers.23. The catalyst monolith of claim 16 , wherein the catalyst monolith has a volume in the range of from 0.027 cmto 125 m.24. The catalyst monolith of claim 16 , ...

EXHAUST TREATMENT SYSTEM INCLUDING NICKEL-CONTAINING CATALYST

Methods and systems are provided for emissions control of a vehicle. In one example, a catalyst may include a cerium-based support material and a transition metal catalyst loaded on the support material, the transition metal catalyst including nickel and copper, wherein nickel in the transition metal catalyst is included in a monatomic layer loaded on the support material. In some examples, limiting nickel to the monatomic layer may mitigate extensive transition metal catalyst degradation ascribed to sintering of thicker nickel washcoat layers. Further, by utilizing the cerium-based support material, side reactions involving nickel in the transition metal catalyst with other support materials may be prevented. 1. A catalyst , comprising:a support material comprising one or more of cerium metal, ceria, and high-cerium cerium-zirconium oxide; anda transition metal catalyst loaded on the support material, the transition metal catalyst comprising nickel and copper;wherein nickel in the transition metal catalyst is included in a monatomic layer loaded on the support material.2. The catalyst of claim 1 , wherein a loading of nickel in the transition metal catalyst on the support material is greater than 0.001 g/mand less than 0.002 g/m.3. The catalyst of claim 1 , wherein nickel is present at about 12 wt. %.4. The catalyst of claim 1 , wherein a weight ratio of copper to nickel is about 1:49.5. The catalyst of claim 1 , wherein the high-cerium cerium-zirconium oxide is CeZrO.6. The catalyst of claim 1 , wherein alumina is present at a molar ratio of alumina to nickel of less than 0.20.7. The catalyst of claim 1 , wherein no alumina is present.8. A system for a vehicle claim 1 , comprising:a first emissions treatment device comprising a cerium-based support material and a transition metal catalyst washcoat, the transition metal catalyst washcoat comprising nickel and copper, with nickel in the transition metal catalyst washcoat included in only a monatomic layer loaded on ...

SUPPORTED CATALYST FOR ORGANIC SUBSTANCE DECOMPOSITION AND ORGANIC SUBSTANCE DECOMPOSING APPARATUS

A supported catalyst for decomposing an organic substance that includes a carrier and catalyst particles supported on the carrier. The catalyst particles contain a perovskite-type composite oxide represented by ABMO, where A contains at least one of Ba and Sr, B contains Zr, M is at least one of Mn, Co, Ni, and Fe, y+z=1, x>1, z<0.4, and w is a positive value that satisfies electrical neutrality. An organic substance decomposition rate after the supported catalyst is subjected to a heat treatment at 950° C. for 48 hours is greater than 0.97 when the organic substance decomposition rate before the heat treatment is regarded as 1, and an amount of the catalyst particles peeled off when the supported catalyst is ultrasonicated in water at 28 kHz and 220 W for 15 minutes is less than 1 wt % of the catalyst particles before untrasonication. 1. A supported catalyst for decomposing an organic substance , the supported catalyst comprising:a carrier; andcatalyst particles supported on the carrier, wherein{'sub': x', 'y', 'z', 'w, 'the catalyst particles contain a perovskite-type composite oxide represented by ABMO, where the A contains at least one selected from Ba and Sr, the B contains Zr, the M is at least one selected from Mn, Co, Ni, and Fe, y+z=1, x>1 and z<0.4, and w is a positive value that satisfies electrical neutrality,'}an organic substance decomposition rate of the supported catalyst after a heat treatment at 950° C. for 48 hours is greater than 0.97 when the organic substance decomposition rate before the heat treatment is regarded as 1, andan amount of the catalyst particles peeled off when the supported catalyst is ultrasonicated in water at 28 kHz and 220 W for 15 minutes is less than 1 wt % with respect to an initial amount of the catalyst particles before being ultrasonicated.2. The supported catalyst for decomposing an organic substance according to claim 1 , wherein 1.001≤x≤1.05 claim 1 , and 0.05≤z≤0.2.3. The supported catalyst for decomposing an ...

SCR METHOD FOR REDUCING OXIDES OF NITROGEN AND METHOD FOR PRODUCING A CATALYST FOR SUCH METHOD

A method of reducing nitrogen oxides in exhaust gas of an internal combustion engine by selective catalytic reduction (SCR) comprises contacting the exhaust gas also containing ammonia and oxygen with a catalytic converter comprising a catalyst () comprising at least one crystalline small-pore molecular sieve catalytically active component (Z) having a maximum ring opening of eight tetrahedral basic building blocks, which crystalline small-pore molecular sieve catalytically active component (Z) comprising mesopores. 1. A method of reducing nitrogen oxides in exhaust gas of an internal combustion engine by selective catalytic reduction (SCR) , which method comprising contacting the exhaust gas also containing ammonia and oxygen with a catalytic converter comprising a catalyst comprising at least one crystalline small-pore molecular sieve catalytically active component (ZM ,I) having a maximum ring opening of eight tetrahedral basic building blocks , which crystalline small-pore molecular sieve catalytically active component (ZM ,I) comprising mesopores.2. The method according to claim 1 , wherein the at least one crystalline small-pore catalytically active component is an aluminosilicate zeolite claim 1 , a silicoaluminophosphate molecular sieve or an aluminophosphate molecular sieve (ZM claim 1 ,I).3. The method according to claim 1 , wherein the molecular sieve comprises a promoter metal.4. The method according to claim 3 , wherein the crystalline molecular sieve is ion-exchanged with the promoter metal.5. The method according to claim 3 , wherein the promoter metal is iron or copper.6. The method according to claim 1 , wherein the crystalline molecular sieve is one or more of the framework structures CHA claim 1 , AEI claim 1 , ERI or AFX.7. The method according to claim 1 , comprising an inorganic binder component (B claim 1 ,BA).8. The method according to claim 7 , in which the inorganic binder component (B claim 7 ,BA) comprises porous particles having a ...

Improved Catalyzed Soot Filter

A catalyzed soot filter, in particular for the treatment of Diesel engine exhaust, comprises a coating design which ensures soot particulates filtration, assists the oxidation of carbon monoxide (CO), and produces low HS emissions during normal engine operations and regeneration events. 1. A catalyzed soot filter , comprisinga wall flow substrate comprising an inlet end, an outlet end, a substrate axial length extending between the inlet end and the outlet end, and a plurality of passages defined by internal walls of the wall flow filter substrate;wherein the plurality of passages comprise inlet passages having an open inlet end and a closed outlet end, and outlet passages having a closed inlet end and an open outlet end;wherein the internal walls of the inlet passages comprise an inlet coating comprising at least one layer, and the inlet coating extends from the inlet end to an inlet coating end, thereby defining an inlet coating length, wherein the inlet coating length is x % of the substrate axial length, with 25≦x≦100; andwherein the internal walls of the outlet passages comprise an outlet coating comprising at least one layer, and the outlet coating extends from the outlet end to an outlet coating end, thereby defining an outlet coating length, wherein the outlet coating length is y % of the substrate axial length, with 25≦y≦100;wherein the inlet coating length defines an upstream zone of the catalyzed soot filter and the outlet coating length defines a downstream zone of the catalyzed soot filter;{'sub': '2', 'wherein the wall flow substrate comprises at least one layer comprising at least one oxidation catalyst and at least one layer comprising at least one HS suppressing material;'}{'sub': '2', 'wherein said at least one oxidation catalyst and said at least one HS suppressing material are separated by the internal walls of the wall flow filter substrate;'}characterized in that the total coating length is x+y, and x+y≧100.2. The catalyzed soot filter of claim ...

COATING TOOL

This application concerns a tool for coating a monolithic shaped catalyst. The tool is part of a coating station and serves to hold and fix the monolith while coating is progressing. 1. Coating tool comprising:{'b': '1', 'a first means () for reversible holding and fixing a catalyst monolith to be coated with a washcoat;'}{'b': '2', 'a second means () to control the inflow of the washcoat into the monolith;'}{'b': 2', '1', '2, 'said second means () being attached to said first means () such that during the coating process said second means () comes into contact with the washcoat before it reaches the monolith;'}{'b': 2', '3', '3', '3', '3, 'said second means () having the form of a plate comprising holes () having, when in use, an inlet side towards the washcoat and an outlet side towards the monolith, and channels providing a communication from the inlet side to the outlet side for the washcoat to flow through; wherein at least part of said channels have an asymmetric channel width along their axis being wider at the washcoat inlet side than at a point within the channels and wherein said asymmetric holes () are wider at the washcoat outlet side than at a point within the channels and the area which is more narrow than outlet and inlet of the holes (), is at least for some of the holes () aligned more closely to the outlet than to the inlet side.'}2. Tool according to claim 1 ,{'b': '3', 'wherein the area which is more narrow than outlet and inlet of the holes () forms a cylindrical surface to the inner periphery of the channels and being located within the second half of the channels seen from the inlet side.'}3. Tool according to claim 1 ,{'b': 2', '2, 'wherein said second means () comprises a concentrical area having a smaller diameter compared to the diameter of the second means () itself and being attached thereto;'}{'b': 4', '10, 'said area being a disk () perforated by holes ().'}4. Tool according to claim 1 ,{'b': 3', '6, 'wherein at least one hole () ...

COATED ARTICLES HAVING HIGH KNOx/KSOx RATIOS FOR SELECTIVE CATALYTIC REDUCTION

Articles comprising a catalyst film comprising VOx, MoOor WO, and TiOdeposited on a substrate are disclosed. The articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases. Methods for producing such articles deposit a catalyst film on the substrate to form a coated substrate, which is then calcined. When used in an SCR process, the coated articles have enhanced activity for NOx conversion, reduced activity for SOx conversion, or both. Light-weight, coated articles having high catalyst loads can be fabricated at the same or reduced dimensions when compared with laminated articles, and increased kNOx/kSOx ratios are available even from coated articles having relatively thin catalyst films. The articles should have particular value for power plant operations, where coal and high-sulfur fuels are commonly used and controlling sulfur trioxide generation is critical. 1. An article comprising:(a) a substrate; and(b) a film deposited on the substrate;{'sub': 3', '3', '2, 'wherein the film comprises VOx, MoOor WO, and TiO, and the article catalyzes the conversion of nitrogen oxides in a gas containing nitrogen oxides.'}2. The article of claim 1 , wherein the film comprises 0.1 to 5 wt. % of VOx claim 1 , 0.5 to 20 wt. % of MoOor WO claim 1 , and 75 to 99.4 wt. % of TiO.3. The article of claim 1 , wherein the film comprises 0.5 to 2 wt. % of VOx claim 1 , 1 to 10 wt. % of MoOor WO claim 1 , and 88 to 98.5 wt. % of TiO.4. The article of claim 1 , wherein the film has a thickness of from about 20 μm to about 500 μm.5. The article of claim 1 , wherein the film has a thickness of from about 50 μm to about 150 μm.6. The article of claim 1 , wherein the substrates a monolith or a plate.7. The article of claim 1 , the article having less mass and at least one of: (a) enhanced activity for NOx conversion at a temperature between 350° C. and 400° C.; and (b) reduced activity for SOx conversion at a temperature between 380° C. and 430° C. claim 1 , compared ...

EXHAUST GAS PURIFICATION CATALYST

A wall-flow-type exhaust gas purification catalyst with an oxygen storage material that has an increased OSC and exhibits its OSC without a compromise provides an exhaust gas purification catalyst having a wall-flow-type substrate, a first catalytic layer and a second catalytic layer. The first catalytic layer is provided to an internal portion of a partition wall in contact with an entrance cell. The second catalytic layer is provided to an internal portion of a partition wall in contact with an exit cell. Each of the first and second catalytic layers has an oxygen storage material. The ratio (D/D) of the coating density Dof the first catalytic layer to the coating density Dof the second catalytic layer is 1.1 to 1.8. 1. A wall-flow-type exhaust gas purification catalyst to be placed in an exhaust pipe of an internal combustion system to purify exhaust gas emitted from the internal combustion system , the exhaust gas purification catalyst comprising:a substrate having a wall-flow structure with an exhaust inlet-side end and an exhaust outlet-side end, the substrate having an entrance cell that is open on the exhaust inlet-side end and an exit cell that is open on the exhaust outlet-side end, separated with a porous partition wall,{'sub': 1', '1', 'w, 'a first catalytic layer provided to an internal portion of the partition wall in contact with the entrance cell, having a length Lfrom the exhaust inlet-side end in the running direction of the partition wall with Lbeing less than the total length Lof the partition wall in the running direction,'}{'sub': 2', '2', 'w, 'a second catalytic layer provided to an internal portion of the partition wall in contact with the exit cell, having a length Lfrom the exhaust outlet-side end in the running direction of the partition wall with Lbeing less than the total length Lof the partition wall in the running direction; wherein'}in the internal portion of the partition wall in contact with the entrance cell, near the exhaust ...

POROUS BODIES WITH ENHANCED PORE ARCHITECTURE

A porous body is provided with enhanced fluid transport properties that is capable of performing or facilitating separations, or performing reactions and/or providing areas for such separations or reactions to take place. The porous body includes at least 80 percent alpha alumina and has a pore volume from 0.3 mL/g to 1.2 mL/g and a surface area from 0.3 m/g to 3.0 m/g. The porous body further includes a pore architecture that provides at least one of a tortuosity of 7.0 or less, a constriction of 4.0 or less and a permeability of 30 mdarcys or greater. The porous body can be used in a wide variety of applications such as, for example, as a filter, as a membrane or as a catalyst carrier. 1. A precursor mixture for producing a porous body , the precursor mixture comprising:(i) at least one milled alpha alumina powder having a particle size of 0.1 microns to 6 microns,(ii) a non-silicate binder, and(iii) at least one principle burnout material having a particle size of 1 micron to 10 microns.2. The precursor mixture of claim 1 , wherein the least one milled alpha alumina powder claim 1 , the non-silicate binder claim 1 , and the at least one principle burnout material are in a homogeneous mixture.3. The precursor mixture of claim 1 , wherein the at least one principle burnout material is a granulated polyolefin.4. The precursor mixture of claim 3 , wherein the granulated polyolefin is one of polyethylene and polypropylene.5. The precursor mixture of claim 1 , further comprising unmilled alpha alumina powder.6. The precursor mixture of claim 5 , wherein the unmilled alpha alumina powder has an average particle size from 10 microns to 100 microns.7. The precursor mixture of claim 5 , wherein a weight ratio of the milled alpha alumina powder to the unmilled alpha alumina powder is from about 0.25:1 to 5:1.8. The precursor mixture of claim 5 , further comprising an additional unmilled alpha alumina powder having a particle size greater the particle size of the unmilled ...

STABILIZED METAL-EXCHANGED SAPO MATERIAL

Described are catalyst materials and catalytic articles comprising a metal exchanged SAPO material comprising a plurality of substitutional sites consisting essentially of Si(4Al) sites and substantially free of Si(0Al) sites. The materials and catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant. 116-. (canceled)17. A process for stabilizing a selective catalytic reduction catalyst material comprising a SAPO material and an exchanged metal , the process comprising:exposing the SAPO material to dry ammonia; andion exchanging the SAPO material with a metal salt to provide a stabilized SAPO material.18. The process of claim 17 , wherein the metal of the metal salt is selected from the group consisting of Cu claim 17 , Fe claim 17 , Co claim 17 , Ce and Ni.19. The process of claim 18 , wherein the metal comprises copper.20. The process of claim 19 , wherein the SAPO material comprises SAPO-34.21. The process of claim 17 , wherein the stabilized SAPO material comprises a plurality of substitutional sites consisting essentially of Si(4Al) sites and substantially free of Si(0Al) sites.22. The process according to claim 21 , wherein the plurality of substitutional sites includes less than 5% Si(0Al) sites.23. The process according to claim 21 , wherein the plurality of substitutional sites includes less than 1% Si(0Al) sites.24. The process according to claim 17 , wherein the SAPO material has a structure type selected from the group consisting of AEI claim 17 , AFT claim 17 , AFX claim 17 , CHA claim 17 , EAB claim 17 , ERI claim 17 , KFI claim 17 , LEV claim 17 , SAS claim 17 , SAT claim 17 , and SAV.25. The process according to claim 24 , wherein the SAPO material has the CHA structure type.26. The process according to claim 25 , wherein the SAPO material is selected from the group consisting of SAPO-34 claim 25 , SAPO-44 claim 25 , and SAPO-47.27. The process according to claim 17 , wherein the ...

EXHAUST GAS PURIFICATION CATALYST

An exhaust gas purification catalyst capable of stably maintaining and exhibiting excellent catalytic performance includes a wall-flow-type substrate, a first catalytic layer and a second catalytic layer. The first catalytic layer is provided to an internal portion of a partition wall in contact with an entrance cell. The second catalytic layer is provided to an internal portion of a partition wall in contact with an exit cell. The ratio (D/D) of the coating density Dof the second catalytic layer to the coating density Dof the first catalytic layer is 1.01 to 1.4. 1. A wall-flow-type exhaust gas purification catalyst to be placed in an exhaust pipe of an internal combustion system to purify exhaust gas emitted from the internal combustion system , the exhaust gas purification catalyst comprising:a substrate having a wall-flow structure with an exhaust inlet-side end and an exhaust outlet-side end, the substrate having an entrance cell that is open on the exhaust inlet-side end and an exit cell that is open on the exhaust outlet-side end, separated with a porous partition wall,{'sub': 1', '1', 'w, 'a first catalytic layer provided to an internal portion of the partition wall in contact with the entrance cell, having a length Lfrom the exhaust inlet-side end in the running direction of the partition wall with Lbeing less than the total length Lof the partition wall in the running direction,'}{'sub': 2', '2', 'w, 'a second catalytic layer provided to an internal portion of the partition wall in contact with the exit cell, having a length Lfrom the exhaust outlet-side end in the running direction of the partition wall with Lbeing less than the total length Lof the partition wall in the running direction; wherein'}in the internal portion of the partition wall in contact with the entrance cell, near the exhaust outlet-side end, the exhaust gas purification catalyst has a substrate-exposing segment free of the first and second catalytic layers, and{'sub': 1', '2', '2', '1, ...

CATALYST BINDERS FOR FILTER SUBSTRATES

Provided is a catalyst washcoat comprising (i) a molecular sieve loaded with about 1 to about 10 weight percent of at least non-aluminum promoter metal (wherein the promoter metal weight percent is based on the weight of the molecular sieve); and (ii) about 1 to about 30 weight percent of a binder having a d90 particle size of less than 10 microns (wherein the binder weight percent is based on the total weight of the washcoat). In another aspect of the invention, the catalyst washcoat is applied to a wall-flow filter to form a catalyst article. In another aspect of the invention the catalyst article is part of an exhaust gas treatment system. And in yet another aspect of the invention, provided is a method for treating exhaust gas using the catalyst article. 1. A catalytic article:a. a honeycomb wall-flow filter having porous walls;b. a catalyst washcoat disposed on and/or within at least a portion of the porous walls, wherein the catalyst washcoat comprises (i) a molecular sieve having about 1 to about 10 weight percent of at least one non-aluminum promoter metal, based on the total weight of the molecular sieve; and (ii) about 1 to about 30 weight percent of a binder having a d90 particle size of less than 10 microns, based on the total weight of the washcoat.2. The catalyst article of claim 1 , wherein the d90 particle size is less than 5 microns.3. The catalyst article of claim 1 , wherein the d90 particle size is greater than 1 micron.4. The catalyst article of claim 1 , wherein the binder is selected from the group consisting alumina claim 1 , silica claim 1 , ceria claim 1 , titania claim 1 , zirconia claim 1 , or combinations of two or more of these.5. The catalyst article of claim 1 , wherein the binder is alumina.6. The catalyst article of claim 5 , wherein the alumina is selected from gamma-alumina and theta alumina.7. The catalyst article of claim 1 , wherein the honeycomb wall-flow filter is a ceramic monolith.8. The catalyst article of claim 1 , ...

FUEL ADDITIVE AND METHOD OF PREPARING THE SAME

Disclosed is a fuel additive which may remove varnish precursor species in a jet fuel. In particular, the fuel additive may be a multi-functional adsorbent which includes a 2-dimensional or 3-dimensional interconnected mesoporous or mixed micro-/mesoporous framework and a plurality of internal cavities formed in the mesoporous or mixed micro-/mesoporous framework and the internal cavities include charged sites to accommodate fuel contaminants for varnish formation, such as metal ions and heteroatomic contaminants. In addition, methods of preparing the multi-functional adsorbent and methods for removing varnish precursor species with the fuel additive are provided. 1. A multi-functional adsorbent for jet fuel , comprising:a 2-dimensional or 3-dimensional interconnected mesoporous or mixed micro-/mesoporous framework; anda plurality of internal cavities formed in the mesoporous or mixed micro-/mesoporous framework,wherein the internal cavities include positively charged sites, negatively charged sites or combinations thereof.2. The multi-functional adsorbent of claim 1 , wherein the mesoporous or mixed micro-/mesoporous framework is formed of a zeolite claim 1 , aluminophosphate claim 1 , hydrotalcite claim 1 , silicate clay claim 1 , alumina claim 1 , transition metal oxides claim 1 , doped variations thereof claim 1 , or combinations thereof.3. The multi-functional adsorbent of claim 1 , wherein the size of each internal cavity of the mesoporous or mixed micro-/mesoporous framework is in a range from about 0.3 nm to about 4 nm.4. The multi-functional adsorbent of claim 1 , wherein the mesoporous or mixed micro-/mesoporous framework includes a polynuclear cluster claim 1 , wherein the polynuclear cluster contains one or more positively charged or negatively charged sites.5. The multi-functional adsorbent of claim 4 , wherein the polynuclear cluster is an Alcluster claim 4 , {[AlO(OH)(HO)]·nCl} claim 4 , a polyoxometalate {[XMO]·mH}or combinations thereof claim 4 ,{' ...

MONOLITH SUBSTRATE, METHOD FOR PRODUCING MONOLITH SUBSTRATE, AND EXHAUST GAS PURIFICATION CATALYST COMPRISING MONOLITH SUBSTRATE

The present disclosure provides a monolith substrate used for an exhaust gas purifying catalyst that improves purification performance, a method for producing such monolith substrate, and an exhaust gas purifying catalyst comprising such monolith substrate. The present disclosure relates to a monolith substrate comprising an alumina-ceria-zirconia composite oxide and alumina, a method for producing such monolith substrate, and an exhaust gas purifying catalyst comprising such monolith substrate. 1. A monolith substrate comprising an alumina-ceria-zirconia composite oxide and alumina.2. The monolith substrate according to claim 1 , wherein a content of the alumina-ceria-zirconia composite oxide is 8% by weight to 60% by weight relative to a total weight of the monolith substrate.3. The monolith substrate according to claim 1 , wherein a content of the alumina is 40% by weight or more relative to a total weight of the monolith substrate.4. The monolith substrate according to claim 1 , which further comprises a ceria-zirconia composite oxide.5. The monolith substrate according to claim 4 , wherein a weight ratio of ceria in the alumina-ceria-zirconia composite oxide (CeO(ACZ)) relative to the ceria in the alumina-ceria-zirconia composite oxide and ceria in the ceria-zirconia composite oxide (CeO(ACZ+CZ)) (i.e. claim 4 , CeO(ACZ)/CeO(ACZ+CZ)) is 0.1 or more.6. A method for producing the monolith substrate according to comprising:a step of mixing alumina-ceria-zirconia composite oxide particles, alumina particles, an alumina binder, and a solvent to prepare a mixture;a step of molding the mixture to prepare a monolith substrate molding; anda step of drying and firing the monolith substrate molding to produce the monolith substrate.7. The method according to claim 6 , wherein a crystallite diameter of a ceria-zirconia composite oxide in the alumina-ceria-zirconia composite oxide particles is 30 nm or smaller.8. The method according to claim 6 , wherein a specific surface ...

Apparatus and method for gaseous emissions treatment with enhanced catalyst distribution

An assembly for treating gaseous emissions includes a substrate body having cells for the passages of emissions gas. Lengths of metal wire are located in selected ones of the cells and an induction heating coil is mounted adjacent the substrate body for generating a varying electromagnetic field for inductive heating of the assembly including gaseous emissions passing along the cells. Within the cells, parts of the cell walls and parts of the wire surfaces are exposed to the passage of the gaseous emissions and both the cell wall parts and the wire surface parts have pollution treating catalyst at their surfaces. 1. An assembly for treating gaseous emissions comprises a substrate body having a plurality of cells for the passage of emissions gas , respective lengths of metal wire located in each of a first set of the plurality of cells , and an induction heating coil mounted adjacent the substrate body for generating a varying electromagnetic field , thereby inductively to heat the lengths of wire and thereby to heat the substrate body , at least one of the wires covering a part of interior walls of the cell in which the wire is contained and leaving another part of the walls of the cell exposed to passage of exhaust gas along the cell , a part of the at least one wire having at least part of a surface thereof exposed to passage of exhaust gas along the cell and having a pollution treating catalyst at the exposed surface part.2. The assembly as claimed in claim 1 , wherein such exposed wall part bears a layer of pollution treating catalyst.3. The assembly as claimed in claim 2 , the pollution treating catalyst at the exposed surface part being in an applied layer.4. The assembly as claimed in claim 2 , the pollution treating catalyst at the exposed surface part being a catalyst metal alloyed with the metal of the wire.5. The assembly as claimed in claim 1 , wherein the at least one metal wire has one of a hollow cross section and an open cross-sectional shape claim 1 ...

Air filtration media and method of processing the same

Air filtration media and methods of processing the same are described herein. One method of processing an air filtration medium includes mixing an adsorption material, a polymer material, and a reinforcement material, compressing the mixture, and heating the mixture.

CATALYTICALLY ACTIVE FILTER FOR USE IN HOT GAS FILTRATION, A PROCESS FOR PREPARING THE FILTER AND A METHOD FOR SIMULTANEOUS REMOVAL OF SOLID PARTICLES AND UNDESIRED CHEMICAL COMPOUNDS FROM GAS STREAMS

A catalytically active filter for use in hot gas filtration to simultaneously remove solid particles and one or more undesirable compounds from a hot gas stream is partly or fully impregnated with a suitable catalyst. The compounds are selected from HCN, arsenic, organic sulfur compounds and carbonyls. The filter is prepared by making an impregnation liquid, which comprises a catalytically effective amount of at least one active metal and an oxide support, impregnating the filter substrate with the impregnation liquid by dipping it in the liquid or spraying it with the liquid to control the amount of liquid and drying and optionally calcining the impregnated filter. 1. A catalytically active filter for use in hot gas filtration to simultaneously remove solid particles and one or more compounds selected from hydrogen cyanide (HCN) , arsenic , organic sulfur compounds and carbonyls from a hot gas stream , said filter , which is partly or fully impregnated with a suitable catalyst , consists of two layers or zones , whereinthe outer layer or zone, facing the gas first, is inert and serves to remove the solid particles from the gas, andthe underlying layer or zone is impregnated with a catalyst-containing liquid and serves to remove one or more of said compounds from the gas.2. Catalytically active filter according to claim 1 , wherein the catalyst comprises cobalt claim 1 , molybdenum claim 1 , nickel and active alumina.3. A process for preparing a catalytically active filter for use in hot gas filtration according to claim 1 , said method comprising the steps ofproviding an appropriately shaped filter substrate having a gas inlet surface and a gas outlet surface,preparing an impregnation liquid, which comprises an effective amount of one or more catalyst metal precursors which, inherently or upon activation, are capable of catalytically removing one or more compounds selected from hydrogen cyanide (HCN), arsenic, organic sulfur compounds and carbonyls,impregnating the ...

Methane oxidation catalyst, process to prepare the same and method of using the same

The present invention provides a method of treating an exhaust gas comprising methane and NO. The exhaust gas is contacted with a catalyst in the presence of oxygen to oxidize at least part of the methane in the gas stream to carbon dioxide and water and at least part of the NO into NO2 obtaining a treated gas stream. The catalyst comprises one or more noble metals supported on non-modified zirconia, wherein the zirconia comprises tetragonal zirconia and monoclinic zirconia, and wherein the weight ratio of tetragonal zirconia to monoclinic zirconia is in the range of from 1:1 to 31:1.

METHOD OF MANUFACTURING CATALYZED PARTICULATE FILTER

A method of manufacturing a catalyzed particulate filter may include: preparing a bare particulate filter; injecting a first catalyst slurry into at least one inlet channel or at least one outlet channel; discharging a portion of the first catalyst slurry by blowing gas into the at least one outlet channel or the at least one inlet channel or drawing the gas from the at least one inlet channel or the at least one outlet channel; injecting a second catalyst slurry into the at least one outlet channel or the at least one inlet channel; discharging a portion of the second catalyst slurry by blowing gas into the at least one inlet channel or the at least one outlet channel or drawing the gas from the at least one outlet channel or the at least one inlet channel; and drying/calcining the particulate filter from which the portion of the first catalyst slurry and the portion of the second catalyst slurry are discharged. 1. A method of manufacturing a catalyzed particulate filter , comprising:preparing a bare particulate filter including at least one inlet channel which has a first end being open and a second end being blocked, at least one outlet channel which has a first end being blocked and a second end being open and which is positioned alternately with the at least one inlet channel, at least one porous wall which defines a boundary between adjacent inlet and outlet channels, at least one first support which is located within at least one among the at least one inlet channel, and at least one second support which is located within at least one among the at least one outlet channel;injecting a first catalyst slurry into the at least one inlet channel or the at least one outlet channel;discharging a portion of the first catalyst slurry by blowing gas into the at least one outlet channel or the at least one inlet channel or drawing the gas from the at least one inlet channel or the at least one outlet channel;injecting a second catalyst slurry into the at least one ...

Exhaust gas purification device for internal combustion engine

An exhaust gas purification device is equipped with: an NOx purification unit disposed in exhaust gas piping of an engine supporting an NOx storage catalyst (NSC); a catalyzed soot filter (CSF) disposed downstream of the NOx purification unit supporting a particulate combustion catalyst causing captured particulates to combust; and an electronic control unit (ECU) which controls exhaust gas flowing into the NSC to be rich and which, by raising the temperature of the NSC, acts as a regeneration device that causes sulfur components captured in the NSC to be desorbed. The particulate combustion catalyst is provided where Ag and Pd have been alloyed on an Al 2 O 3 carrier; the quantity of Ag supported by the Al 2 O 3 carrier is 1.2-2.5 g/L; the quantity of Pd supported by the Al 2 O 3 carrier is 0.7 g/L or less; and the ratio Ag/Pd of the Ag support quantity to the Pd support quantity is 1.7-8.3.

CATALYTIC CONVERTERS HAVING NON-LINEAR FLOW CHANNELS

Disclosed is a honeycomb catalyst substrate core having geometrically non-linear flow channels. In an embodiment, the honeycomb catalyst substrate core includes helical flow channels. In another embodiment, the honeycomb catalyst substrate core includes sinusoidal flow channels. In yet another embodiment, the honeycomb catalyst substrate core includes helical plus sinusoidal flow channels. The honeycomb catalyst substrate core comprises a plurality of parallel non-linear flow channels formed along a longitudinal axis of symmetry of the catalyst substrate core, each non-linear flow channel configured such that eddies occurs during engine exhaust gas flow. Also disclosed is a method for manufacturing a ceramic honeycomb having non-linear flow channels, comprising the steps extrusion soft ceramic material through a die whilst the die moves through six degrees of freedom along its axis of symmetry. Disclosure includes a method for manufacturing a ceramic honeycomb having non-linear flow channels using three-dimensional printing. 1. A honeycomb catalyst substrate core , the honeycomb catalyst substrate core comprising:(a) a plurality of flow channels formed along a longitudinal axis of symmetry of a catalyst substrate core of a catalyst substrate, each flow channel configured into a sinusoidal substrate core adapted to increase heat-transfer and/or mass-transfer performance through formation of stable vortical structures, exclusively operative under strictly non-turbulent flow conditions, which create secondary flow, lateral to longitudinal channel flow, and enhance interactions with channel walls;(b) a washcoat within which a catalyst is embedded, said washcoat being applied over said catalyst substrate;(c) a mat cover that forms a skin over a honeycomb formed by said plurality of flow channels; and(d) a housing that forms a protective outer shell over said honeycomb, said housing having an inlet and an outlet on opposite ends of said honeycomb, said inlet and said ...

HONEYCOMB SUBSTRATE FOR CATALYST SUPPORT, AND CATALYTIC CONVERTER FOR EXHAUST GAS PURIFICATION

Adhesion of a catalyst layer and an oxide film in a honeycomb substrate for catalyst support is improved. A honeycomb substrate for catalyst support used in purification of exhaust gas includes a honeycomb body and an oxide film that is formed on the surface of the honeycomb body and that has α-alumina as a main component. The oxide film includes multiple oxide projections that are formed to be dispersed on the film surface and that include a contracted shape in which the width becomes narrower near the honeycomb body, and the density of the projection formations on the film surface is 0.20 (pieces/m)-3.00 (pieces/m). 1. A honeycomb substrate for a catalyst support used for exhaust gas purification comprising:a honeycomb body; andan oxide film having α-alumina as a main component formed on a surface of the honeycomb body, whereinthe oxide film includes a large number of oxide projections formed on a surface of the film in a scattered manner, the large number of oxide projections each having a tapered shape portion with a width decreasing toward the honeycomb body, the large number of oxide projections are formed to let a catalyst layer adhere to the oxide film without an adhesive layer, and{'sup': 2', '2, 'a formation density of the oxide projections on the film surface is 0.20 (projections/m) or more and 3.00 (projections/m) or less.'}2. The honeycomb substrate for a catalyst support according to claim 1 , wherein a maximum width of each of the oxide projections is 100 (nm) to 3 (m).3. The honeycomb substrate for a catalyst support according to claim 1 , wherein the formation density of the oxide projections is 1.00 (projections/m) or more and 3.00 (projections/m) or less.4. The honeycomb substrate for a catalyst support according to claim 1 , whereinthe honeycomb body includes a stainless steel foil containing at least Cr and Al, andthe stainless steel foil and the oxide film contain 9% by mass or more and 30% by mass or less of Cr and 1.5% by mass or more and 13% ...

Shaped porous carbon products

Shaped porous carbon products and processes for preparing these products are provided. The shaped porous carbon products can be used, for example, as catalyst supports and adsorbents. Catalyst compositions including these shaped porous carbon products, processes of preparing the catalyst compositions, and various processes of using the shaped porous carbon products and catalyst compositions are also provided.

Exhaust gas purifying filter

Provided is an exhaust gas purifying filter used with a HC purifying catalyst supported thereon. Numerous pores are formed in partitions of the exhaust gas purifying filter. In a cross-section of the partition, pores are open at a passage surface, having an open end of which the opening diameter is 50 μm or larger. In the cross-section of the partitions, the partitions include a narrow part where a pore diameter is 5 μm or more and the pore diameter becomes a minimum in a region. In the cross-section of the partitions, the region is positioned between a pair of virtual lines L 1 and L 2 extending from opposing sides of the opening end to a passage surface positioned opposite to the opening end along the wall thickness direction X, Z. The pore diameter at the narrow part is 6% or more and less than or equal to 20% of the opening diameter.

Exhaust gas purification filter

An exhaust gas purification filter is used so as to support a NO X purification catalyst. The exhaust gas purification filter includes a honeycomb structure portion and a plug portion. The honeycomb structure portion includes a partition wall and cells. Numerous pores are formed in the partition wall. The cells are partitioned by the partition walls and form a flow path for an exhaust gas. The plug portion alternately seals an inflow end surface or an outflow end surface for the exhaust gas in the cells. The partition wall has a gas permeability coefficient that is equal to or greater than 0.35×10 −12 m 2 , a pore volume ratio of pore diameters of 9 μm or less that is equal to or less than 25%, and an average pore diameter that is equal to or greater than 12 μm.

HONEYCOMB STRUCTURE AND CATALYST BODY

A honeycomb structure provided with cell walls which partition the inside of a cylindrical outer skin having openings at both ends, and a large number of cells which are surrounded by the cell walls and provided in parallel in an axial direction of the cylindrical outer skin. At least part of the large number of cells include a protruding piece. The protruding piece forms a through-hole which penetrates the cell wall, and a protruding wall which protrudes inward of the cell at an angle from an edge of the through-hole. 1. A honeycomb structure comprising:cell walls which partition an inside of a cylindrical outer skin, the cell walls having openings at both ends; and a through-hole which penetrates through a corresponding one of the cell walls; and', 'a protruding wall which protrudes inward of a corresponding one of the cell at an inclination from an edge of the through-hole., 'a large number of cells which are surrounded by the cell walls and arranged in parallel in an axial direction of the cylindrical outer skin, having a polygonal cross sectional shape, wherein at least a part of the large number of cells is provided with protruding pieces surrounding a vertex of the polygonal shaped cell, each protruding piece forming,'}2. The honeycomb structure according to claim 1 , wherein the protruding piece is a cut and raised piece on a corresponding one of the cell walls.3. The honeycomb structure according to claim 1 , wherein the cells which include the protruding pieces are a plurality of cells arranged to be adjacent to each other.4. The honeycomb structure according to claim 1 , wherein the protruding piece has a density which is equal to or higher than 1 piece/cm claim 1 , per unit surface area claim 1 , on a projection surface at an end surface in which the cell opens.5. The honeycomb structure according to claim 1 , wherein the protruding piece has a height H of a tip-end and a length L in the axial direction claim 1 , which satisfies a relationship of L≥H.6. ...

CATALYTIC FORMS AND FORMULATIONS

Catalytic forms and formulations are provided. The catalytic forms and formulations are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane. Related methods for use and manufacture of the same are also disclosed. 152-. (canceled)53. A catalytic material comprising a first and second catalyst , wherein the first and second catalysts have a different catalytic activity in the oxidative coupling of methane (OCM) reaction under the same conditions , wherein the catalytic material comprises a C2 selectivity of greater than 50% and a methane conversion of greater than 20% when the catalyst is employed as a heterogeneous catalyst in the oxidative coupling of methane at a temperature of 750° C. or less.54. The catalytic material of claim 53 , wherein the first catalyst is a nanowire catalyst.55. The catalytic material of claim 53 , wherein the second catalyst is a bulk catalyst.56. The catalytic material of claim 53 , wherein each of the first and second catalysts are nanowire catalysts.57. The catalytic material of claim 53 , wherein each of the first and second catalyst are bulk catalysts.58. The catalytic material of claim 53 , wherein the second catalyst has a lower catalytic activity than the first catalyst under the same conditions.59. The catalytic material of claim 58 , wherein the catalytic activity of the second catalyst increases with increasing temperature.6070-. (canceled)71. The catalytic material of claim 53 , wherein the catalytic material comprises a void fraction volume of about 35% to about 70%.72. The catalytic material of claim 71 , wherein the catalytic material comprises a void fraction volume of about 45% to about 65%.73. The catalytic material of claim 53 , wherein the catalytic material comprises catalyst particles having a cross sectional dimension in at least one dimension between about 1 mm and about 20 mm.74. The catalytic material of claim 73 , wherein the cross sectional dimension is between about 2 mm ...

Method for Elemental Analysis

The invention relates to a method for elemental analysis, in particular for determining carbon and nitrogen in a sample, an apparatus suitable for said method, and the use of a catalyst suitable for said method, the catalyst being a metal oxide catalyst comprising oxides of Ce, Cu and Mn. 1. A method for elemental analysis for determination of the amount of carbon and nitrogen in a sample , comprising:(a) feeding the sample to a first part of a combustion unit at a temperature of at least 500° C. and an atmosphere with a high oxygen content,(b) passing resultant gas from step (a) over a metal oxide catalyst in a second part of the combustion unit, wherein the metal oxide catalyst comprises oxides of Ce, Cu and Mn,(c) reducing nitrogen oxides obtained from step (b) to nitrogen,(d) measuring the amount of nitrogen in the sample obtained from step (c),{'sub': 2', '2, '(e)separating HO and COfrom the sample obtained from step (c), and'}{'sub': '2', '(f) measuring the amount of carbon in the sample by determining the COcontent.'}2. The method according to claim 1 , wherein the sample is introduced into the combustion unit via an automatic sampler.3. The method according to claim 2 , wherein the amount of Ce claim 2 , Mn and Cu in the metal oxide catalyst satisfies the mass ratio Ce Подробнее

DIESEL OXIDATION CATALYST CONTAINING MANGANESE

The present invention relates to a diesel oxidation catalyst, which comprises a carrier body having a length L extending between a first end face a and a second end face b and a catalytically active material zone A arranged on the carrier body, wherein the material zone A contains palladium and platinum on a manganese-containing carrier oxide, wherein the carrier oxide consists of a carrier oxide component A and a carrier oxide component B and the carrier oxide component B consists of manganese and/or a manganese compound and is present in an amount of 5 to 15 wt. %, calculated as MnOand based on the total weight of the manganese-containing carrier oxide. 1. A diesel oxidation catalyst , which comprises a carrier body having a length L extending between a first end face a and a second end face b and a catalytically active material zone A arranged on the carrier body , wherein the material zone A contains palladium and platinum supported on a manganese-containing carrier oxide , wherein the manganese-containing carrier oxide consists of carrier oxide component A and a carrier oxide component B and the carrier oxide component B consists of manganese and/or a manganese compound and is present in an amount of 5 to 15 wt. % , calculated as MnOand based on the total weight of the manganese-containing carrier oxide.2. Diesel oxidation catalyst according to claim 1 , wherein the carrier oxide component A is selected from the series consisting of aluminum oxide claim 1 , doped aluminum oxide claim 1 , silicon oxide claim 1 , titanium dioxide and mixed oxides containing one or more of said oxides.3. Diesel oxidation catalyst according to claim 1 , wherein the carrier oxide component A is doped aluminum oxide.4. Diesel oxidation catalyst according to claim 1 , wherein the carrier oxide component A is a mixed oxide comprising aluminum oxide and silicon oxide or a silicon-oxide-doped aluminum oxide.5. Diesel oxidation catalyst according to claim 1 , wherein claim 1 , the carrier ...

MONOLITH CATALYST FOR CARBON DIOXIDE REFORMING REACTION, PREPARATION METHOD FOR SAME, AND PREPARATION METHOD FOR SYNTHESIS GAS USING SAME

The present invention relates to a monolith catalyst for a carbon dioxide reforming reaction and to a preparation method for same, and more specifically the invention provides a preparation method for a monolith catalyst for a methane reforming reaction using carbon dioxide, the method comprising a step of mixing and impregnating a support in a metal precursor solution, coating a monolith substrate with the solution resulting from the mixing and impregnating, drying same and then calcining the monolith substrate coated with the solution resulting from the mixing and impregnating. 1. A monolith catalyst for a carbon dioxide reforming reaction comprising a support impregnating an active material represented by the following Formula 1 and a monolith substrate:{'br': None, 'i': a', 'b, '(X)-(Zr)/Z\u2003\u2003[Formula 1]'}{'sub': 2', '2', '3, 'where X is an active material of Co or Ni, Z is a support of SiOor AlO, a and b each represents parts per weight of X and Zr relative to component Z in order, and a is 5.0 to 30.0, and b is 1.0 to 30.0 relative to 100 parts by weight of the support (Z).'}2. The monolith catalyst for a carbon dioxide reforming reaction as set forth in claim 1 , wherein the shape of the monolith substrate is a honeycomb structure.3. A preparation method for a monolith catalyst for a carbon dioxide reforming reaction comprising a support impregnating an active material represented by the following Formula 1 and a monolith substrate claim 1 , the method comprising the steps of:mixing and impregnating a metal precursor solution with a support Z of the following Formula 1 so as to meet the component ratio of the following Formula 1 (step 1);coating a monolith substrate with the mixed and impregnated solution in step 1 (step 2);drying the monolith substrate coated with the mixed and impregnated solution in step 2 (step 3); and {'br': None, 'i': a', 'b, '(X)-(Zr)/Z\u2003\u2003[Formula 1]'}, 'calcining the dried monolith substrate after being coated with ...

CATALYST UNIT

A catalyst unit may include a first brick having a first noble metal layer formed along an exhaust gas passage thereof and being disposed on a space that an exhaust gas flow rate may be a predetermined rate, a second brick being disposed onto the first brick and having a second noble metal layer formed along an exhaust gas passage thereof, wherein the second brick may be disposed on a space that an exhaust gas flow rate may be lower than the predetermined rate, and wherein the first brick and the second brick may be attached together to fix the second brick onto the first brick. 111-. (canceled)12. A manufacturing method of a catalyst unit , comprising:extruding a first brick that exhaust gas holes are formed therein;extruding a second brick that exhaust gas holes are formed therein;forming a first noble metal layer in the first brick;forming a second noble metal layer in the second brick; andattaching the first brick on the second brick.13. The manufacturing method of a catalyst unit of claim 12 , wherein the second brick has a hole formed in the center along a longitudinal direction of the second brick to form a shape of a cylindrical pipe.14. The manufacturing method of a catalyst unit of claim 13 , wherein the first brick is inserted into the hole of the second brick and fixed there to.15. The manufacturing method of a catalyst unit of claim 12 , wherein the first brick is disposed onto an upper surface of the second brick.16. The manufacturing method of a catalyst unit of claim 15 , wherein a lower surface of the first brick and the upper surface of the second brick have a curved line surface.17. The manufacturing method of a catalyst unit of claim 16 , wherein a central portion of the lower surface in the first brick is plane and both side edges thereof are slanted upwards and a central portion of the upper surface of the second brick is plane corresponding to the lower surface of the first brick and both sides edges thereof are slanted upwards. The present ...

EXHAUST GAS PURIFICATION CATALYST

Provided is an exhaust gas purification catalyst that combines reduction of pressure loss and enhancement of purification performance. This invention provides an exhaust gas purification catalyst comprising a wall-flow-type substrate and first and second catalytic layers. The first catalytic layer is provided to the interior of a partition wall, in contact with an entrance cell, from an exhaust inlet-side end in the running direction, having a length L1 less than Lw. The second catalytic layer is provided to the interior of a partition wall, in contact with an exit cell, from an exhaust outlet-side end in the running direction, having a length L2 less than Lw. An internal portion of partition wall in contact with entrance cell has a substrate-exposing segment near the exhaust outlet-side end. 1. A wall-flow-type exhaust gas purification catalyst to be placed in an exhaust pipe of an internal combustion system to purify exhaust gas emitted from the internal combustion system , the exhaust gas purification catalyst comprising:a substrate having a wall-flow structure with an exhaust inlet-side end and an exhaust outlet-side end, the substrate having an entrance cell that is open on the exhaust inlet-side end and an exit cell that is open on the exhaust outlet-side end, separated with a porous partition wall,a first catalytic layer provided to an internal portion of the partition wall in contact with the entrance cell, having a length L1 from the exhaust inlet-side end in the running direction of the partition wall with L1 being less than the total length Lw of the partition wall in the running direction,a second catalytic layer provided to an internal portion of the partition wall in contact with the exit cell, having a length L2 from the exhaust outlet-side end in the running direction of the partition wall with L2 being less than the total length Lw of the partition wall in the running direction; whereinin the internal portion of the partition wall in contact with ...

DIESEL OXIDATION CATALYST

An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, described is an oxidation catalyst composite including a first oxidation component comprising a first refractory metal oxide support, palladium (Pd) and platinum (Pt); a NOstorage component comprising one or more of alumina, silica, titania, ceria, or manganese; and a second oxidation component comprising a second refractory metal oxide, a zeolite, and Pt. The oxidation catalyst composite is sulfur tolerant, adsorbs NOx and thermally releases the stored NOat temperature less than 350° C. 1. An oxidation catalyst composite comprising:a carrier substrate; and a first oxidation component comprising at least one platinum group metal (PGM) and a first refractory metal oxide, wherein the first oxidation component is substantially free of zeolite;', {'sub': 'x', 'a NOstorage component comprising one or more of alumina, silica, titania, ceria, and manganese; and'}, 'a second oxidation component comprising a second refractory metal oxide, a zeolite, and at least one PGM., 'a catalytic coating on at least a portion of the carrier substrate, the catalytic coating including2. The oxidation catalyst composite of claim 1 , wherein one or more of the following conditions applies:the first oxidation component comprises platinum (Pt) and palladium (Pd) in a Pt to Pd weight ratio of about 0:1 to 4:1;the first oxidation component is substantially free of zeolite;{'sub': 'x', 'the NOstorage component is substantially free of zirconia;'}{'sub': 'x', 'the NOstorage component is substantially free of Pt and Pd;'}the second oxidation component comprises Pt;the second oxidation component is substantially free of palladium.3. The oxidation catalyst composite of claim 1 , wherein:the first oxidation component comprises Pt and Pd in a weight ratio of about 0:1 to 4:1 and is substantially free of zeolite;{'sub': 'x', 'the NOstorage component is ...

PHOTOCATALYTIC FILTER FOR DEGRADING MIXED GAS AND MANUFACTURING METHOD THEREOF

An photocatalytic filter is provided to include a support; and a photocatalytic material coated on the support to cause a photocatalytic reaction to degrade an undesired gas present in an air, and wherein the photocatalytic filter has cells with a width equal to or less than 2 mm, thereby providing an air resistance in a direction facing UV LED for the photocatalytic activation, the air flow having a minimized air resistance. 120-. (canceled)21. A photocatalytic filter including:a support; anda photocatalytic material coated on the support to cause a photocatalytic reaction to degrade an undesired gas present in an air, andwherein the photocatalytic filter has cells with a width equal to or less than 2 mm, thereby providing an air resistance in a direction facing UV LED for the photocatalytic activation, the air flow having a minimized air resistance.22. The photocatalytic filter of claim 21 , wherein the minimized air resistance is not greater than 1.32 m/s.23. The photocatalytic filter of claim 21 , wherein the minimized air resistance is between 1.05 m/s and 1.25 m/s.24. The photocatalytic filter of claim 21 , wherein the photocatalytic material includes titanium dioxide (TiO).25. The photocatalytic filter of claim 21 , wherein the photocatalytic filter has a height between 5 mm to 12 mm.26. The photocatalytic filter of claim 21 , wherein the photocatalytic filter allows a first undesired gas that reacts later than a second undesired gas in a competitive reaction is degraded from an initial stage of the photocatalytic reaction.27. The photocatalytic filter of claim 21 , wherein the support is further coated with metal compounds.28. The photocatalytic filter of claim 27 , wherein the photocatalytic filter exhibits a higher removal rate of the undesired gas as compared to a photocatalytic filter without including the metal compounds.29. The photocatalytic filter of claim 27 , wherein the metal compounds include a tungsten (W) compound including HWO.30. The ...

OXIDATION CATALYST FOR A COMPRESSION IGNITION ENGINE AND A METHOD OF PREPARATION THEREFOR

An oxidation catalyst for treating an exhaust gas produced by a compression ignition engine is described. The oxidation catalyst comprises a substrate and a catalytic coating disposed on the substrate, wherein the catalytic coating comprises a mixture of: (a) particles of a first catalytic material for oxidising carbon monoxide (CO) and/or hydrocarbons (HCs); (b) particles of a second catalytic material for oxidising nitric oxide (NO) and/or for absorbing oxides of nitrogen (NO). 1. An oxidation catalyst for treating an exhaust gas produced by a compression ignition engine , wherein the oxidation catalyst comprises a substrate and a catalytic coating disposed on the substrate , wherein the catalytic coating comprises a mixture of:(a) particles of a first catalytic material for oxidising carbon monoxide (CO) and/or hydrocarbons (HCs);{'sub': 'x', '(b) particles of a second catalytic material for oxidising nitric oxide (NO) and/or for absorbing oxides of nitrogen (NO).'}2. An oxidation catalyst according to claim 1 , wherein the first catalytic material comprises (i) platinum claim 1 , (ii) a first support material claim 1 , and (iii) a component selected from the group consisting of palladium claim 1 , a promoter and a combination of palladium and a promoter.3. An oxidation catalyst according to claim 2 , wherein the first catalytic material comprises (i) platinum (Pt) claim 2 , (ii) a first support material claim 2 , and (iii) a component selected from the group consisting of a promoter and a combination of palladium and a promoter claim 2 , and wherein the promoter comprises at least one of (a) an alkaline earth metal or an oxide claim 2 , hydroxide or carbonate thereof claim 2 , and (b) bismuth or an oxide thereof.4. An oxidation catalyst according to claim 3 , wherein the first support material comprises a refractory oxide claim 3 , and wherein the refractory oxide comprises alumina claim 3 , silica or a mixed or composite oxide of silica and alumina.5. An ...

HONEYCOMB CERAMIC SUBSTRATES, HONEYCOMB EXTRUSION DIES, AND METHODS OF MAKING HONEYCOMB CERAMIC SUBSTRATES

A honeycomb ceramic substrate, a method of making thereof, and a honeycomb extrusion die configured to extrude a honeycomb ceramic substrate from a batch of ceramic or ceramic-forming material is provided. The substrate may include a lattice of intersecting walls defining a honeycomb network of flow channels extending between an inlet end and an outlet end of the honeycomb substrate. Each flow channel may be defined by a plurality of channel walls of the intersecting walls with at least two of the plurality of channel walls including concave inner surfaces facing a center of the corresponding flow channel from central portions of the concave inner surfaces to concave corner portions facing the center of the corresponding flow channel. 1. A honeycomb extrusion die configured to extrude a honeycomb ceramic substrate from a batch of ceramic or ceramic-forming material , the honeycomb extrusion die comprising:a plurality of die pins arranged in a matrix and spaced from one another to define a lattice of intersecting slots defined between the die pins at an outer face of the die pins, wherein an outer periphery at the outer face of at least one of the die pins includes a plurality of sides joined by corresponding corner portions with at least two convex sides facing away from a center of the corresponding die pin, and wherein at least one corner portion is convex facing away from the center of the corresponding die pin.2. The honeycomb extrusion die of claim 1 , wherein (i) two adjacent die pins of the plurality of die pins comprise facing sides that at least partially define a wall slot and (ii) each facing side is convex facing away from a center of the corresponding adjacent die pin.3. The honeycomb extrusion die of claim 1 , wherein (i) at least one wall slot is defined between facing sides of two adjacent die pins of the plurality of die pins claim 1 , (ii) each of the facing sides are convex facing each other from central portions thereof to corresponding corner ...

CATALYTIC COMPOSITION AND STRUCTURES MADE THEREOF

Methods use a catalytic composition built up from a ceramic material including a catalytic material and a first inorganic binder and a second inorganic binder and a catalytic structure made thereof. Preferably, the structure is made by a colloidal ceramic shaping technique. The structure is used for catalytic or ion exchange applications. The catalytic structures have excellent mechanical, physicochemical and catalytic properties. 1. A method for performing methanol-to-olefins reactions , comprising:{'claim-text': ['shaping a composition comprising a ceramic material to obtain a green structure, wherein said ceramic material comprises a catalytic material and a first inorganic binder and a second inorganic binder, the shaping comprising preparing a suspension, slurry or paste of the composition and extruding the suspension, slurry or paste as fibers by three-dimensional fiber deposition to obtain the green structure, wherein the fibers are spaced apart to form a porous layered network;', 'the total amount of the first and second inorganic binders in the ceramic material comprising between 10 wt % and 50 wt % by total solid weight of the formed catalytic structure;', 'wherein the first inorganic binder is a clay material and the second inorganic binder is selected from: colloidal silica, colloidal alumina, colloidal zirconia, colloidal yttrium oxide, or colloidal tin oxide; or the first inorganic binder is selected from: colloidal silica, colloidal alumina, colloidal zirconia, colloidal yttrium oxide and the second inorganic binder is an inorganic thermohardening compound;', 'drying and calcining the green structure to obtain the bulk catalytic structure, wherein the structure is monolithic and comprises first channels having a length extending in a flow direction and second channels having a length extending in a radial direction, wherein the first channels and the second channels are fluidly connected; and'], '#text': 'building a bulk catalytic structure, ...

FUNCTIONAL STRUCTURE

A functional structure which can resist a decrease in the functions of the functional material caused by influences such as force and heat and thus have a long life. The functional structure includes supports each having a porous structure and including a zeolite-type compound, and at least one functional material present in the supports, in which each of the supports has channels communicating with one another, the functional material is present at least in the channel of each of the supports, the functional material present in the supports includes a metal element (M), and the content of the metal element (M) is more than 2.5 mass % with respect to the functional structure. 1. A functional structure comprising:supports each having a porous structure and including a zeolite-type compound; andat least one functional material present in the supports, whereineach of the supports has channels communicating with one another,the functional material is present at least in the channel of each of the supports,the functional material present in the supports comprises a metal element (M), andthe content of the metal element (M) is more than 2.5 mass % with respect to the functional structure.2. The functional structure according to claim 1 , wherein the functional material present in the supports comprises at least one of a metal and a metal oxide.3. The functional structure according to claim 1 , whereinthe channels have any one of a one-dimensional pore, a two-dimensional pore, and a three-dimensional pore of a framework structure of the zeolite-type compound, and have an enlarged pore portion different from the one-dimensional pore, the two-dimensional pore, and the three-dimensional pore, andthe functional material is present at least in the enlarged pore portion.4. The functional structure according to claim 3 , wherein the enlarged pore portion connects a plurality of pores constituting any one of the one-dimensional pore claim 3 , the two-dimensional pore claim 3 , and ...

METHOD OF MANUFACTURING CATALYZED PARTICULATE FILTER

A method of manufacturing a catalyzed particulate filter may include: preparing a bare particulate filter including at least one inlet channel which may have a first end being open and a second end being blocked, at least one outlet channel which may have a first end being blocked and a second end being open and which is positioned alternately with the at least one inlet channel, at least one porous wall which defines a boundary between adjacent inlet and outlet channels, and a support which is located within at least one among the at least one inlet channel and the at least one outlet channel; injecting a catalyst slurry into the at least one inlet channel and the at least one outlet channel; discharging a portion of the catalyst slurry by blowing gas into or drawing the gas from the at least one inlet channel or the at least one outlet channel; and drying/calcining the particulate filter from which the portion of the catalyst slurry is discharged. 1. A method of manufacturing a catalyzed particulate filter , comprising:preparing a bare particulate filter including at least one inlet channel which has a first end being open and a second end being blocked, at least one outlet channel which has a first end being blocked and a second end being open and which is positioned alternately with the at least one inlet channel, at least one porous wall which defines a boundary between adjacent inlet and outlet channels, and a support which is located within at least one among the at least one inlet channel and the at least one outlet channel;injecting a catalyst slurry into the at least one inlet channel and the at least one outlet channel;discharging a portion of the catalyst slurry by blowing gas into or drawing the gas from the at least one inlet channel or the at least one outlet channel; anddrying/calcining the particulate filter from which the portion of the catalyst slurry is discharged.2. The method of claim 1 , wherein the at least one inlet channel claim 1 , the at ...

MANUFACTURING METHOD OF HONEYCOMB STRUCTURE

A manufacturing method of a honeycomb structure including: 1. A manufacturing method of a honeycomb structure comprising:a formed body forming step of extruding a forming raw material, to form a plurality of quadrangular prismatic columnar honeycomb formed bodies which have partition walls to define a plurality of cells forming through channels for a fluid and extending from one end face to the other end face and in which a formed body cross section perpendicular to a central axis is rectangular;a firing step of firing the honeycomb formed bodies, to form a plurality of quadrangular prismatic-columnar quadrangular segments;a triangular segment forming step of cutting parts of the formed quadrangular segments along a diagonal line in a quadrangular cross section perpendicular to the central axis and in parallel with the central axis, to form a triangular prismatic-columnar triangular segment which has a first side surface, a second side surface perpendicular to the first side surface, and an oblique side surface to couple side ends of the first side surface and the second side surface with each other and in which a triangular cross section perpendicular to the central axis is right-angled triangular;a bonded body forming step of disposing the triangular segment in a corner so that the oblique side surface becomes an outermost circumference and so that the residual first and second side surfaces face segment side surfaces of the quadrangular segments, respectively, to construct a temporary assembly in which a plurality of triangular segments and the quadrangular segments are combined, and interposing a bonding layer between the triangular segment and the quadrangular segment and between the quadrangular segments, to form a honeycomb bonded body; anda circumference grinding step of drying the obtained honeycomb bonded body, and then grinding and processing a circumferential surface of the honeycomb bonded body, to manufacture the honeycomb structure having a desirable ...

Low-Temperature Diesel Oxidation Catalysts Using TiO2 Nanowire Arrays Integrated on a Monolithic Substrate

Metal oxide nanoarrays, such as titanium oxide nanoarrays, having a platinum group metal dispersed thereon and methods of making such nanoarrays are described. The platinum group metal can be dispersed on the metal oxide nanoarray as single atoms. The nanoarrays can be used to catalyze oxidation of combustion exhaust. 1. A method of making a metal oxide nanoarray having a platinum group metal dispersed thereon , the method comprising:contacting a metal oxide nanoarray with a solution comprising a platinum group metal precursor;drying the metal oxide nanoarray; andcalcining the metal oxide nanoarray.2. The method of claim 1 , wherein the platinum group metal precursor is a platinum precursor.3. The method of claim 2 , wherein the platinum precursor is Pt(NH)(NO).4. The method of claim 1 , where the solution comprising a platinum group metal precursor further comprises sodium ions.5. The method of claim 4 , wherein the sodium ions are from sodium hydroxide (NaOH).6. The method of claim 1 , wherein drying the metal oxide nanoarray comprises microwaving the metal oxide nanoarray.7. The method of claim 6 , wherein microwaving is performed at a frequency from about 915 MHz to about 7.0 GHz.8. The method of claim 1 , further comprising contacting the metal oxide nanoarray with a solution having a platinum precursor dissolved therein and drying the metal oxide nanorarray at least twice prior to calcining the metal oxide nanoarray.9. The method of claim 1 , wherein calcining is performed in air.10. The method of claim 1 , wherein calcining is performed at a temperature between about 450° C. and 550° C. for a duration from 3 hours to 4 hours.11. The method of claim 1 , wherein calcining is performed with a ramp rate of 2° C./min.12. The method of claim 1 , wherein calcining is performed at about 500° C. for about 4 hours with a ramp rate of about 2° C./min.13. The method of claim 1 , wherein the metal oxide is titanium dioxide.14. The method of claim 13 , further comprising ...

COMPOSITIONS FOR HIGH TEMPERATURE CATALYSIS

Ceramic compositions with catalytic activity are provided, along with methods for using such catalytic ceramic compositions. The ceramic compositions correspond to compositions that can acquire increased catalytic activity by cyclic exposure of the ceramic composition to reducing and oxidizing environments at a sufficiently elevated temperature. The ceramic compositions can be beneficial for use as catalysts in reaction environments involving swings of temperature and/or pressure conditions, such as a reverse flow reaction environment. Based on cyclic exposure to oxidizing and reducing conditions, the surface of the ceramic composition can be converted from a substantially fully oxidized state to various states including at least some dopant metal particles supported on a structural oxide surface. 1. A catalyst composition comprising 0.1 wt % or more of particles of one or more dopant metals and 50 wt % to 99 wt % of one or more structural oxides , the one or more dopant metals corresponding to dopant metal oxides having a Gibbs free energy of formation at 800° C. that is greater than a Gibbs free energy of formation at 800° C. for the one or more structural oxides by 200 kJ/mol or more , the particles of the one or more dopant metals being supported on a surface of the catalyst composition , the particles of the one or more dopant metals having an average characteristic length of 10 μm or less.2. The catalyst composition of claim 1 , wherein the catalyst composition comprises a monolith having a cell density of 50 cells per square inch to 900 cells per square inch claim 1 , or wherein the catalyst composition comprises a monolith having a cell density of more than 900 cells per square inch.3. The catalyst composition of claim 1 , wherein the one or more structural oxides comprise 0.1 wt % to 10 wt % of free silica claim 1 , relative to a weight of the catalyst composition.4. The catalyst composition of claim 1 , wherein the one or more structural oxides comprise at ...

COMPOSITIONS FOR HIGH TEMPERATURE CATALYSIS

Ceramic compositions with catalytic activity are provided, along with methods for using such catalytic ceramic compositions. The ceramic compositions correspond to compositions that can acquire increased catalytic activity by cyclic exposure of the ceramic composition to reducing and oxidizing environments at a sufficiently elevated temperature. The ceramic compositions can be beneficial for use as catalysts in reaction environments involving swings of temperature and/or pressure conditions, such as a reverse flow reaction environment. Based on cyclic exposure to oxidizing and reducing conditions, the surface of the ceramic composition can be converted from a substantially fully oxidized state to various states including at least some dopant metal particles supported on a structural oxide surface. 1. A method for reforming a hydrocarbon-containing stream , comprising:exposing an initial composition comprising 0.1 wt % or more of at least one dopant metal oxide and 50 wt % to 99 wt % of one or more structural oxides, to a reducing environment comprising a temperature of 500° C. to 1400° C. to form a catalyst composition comprising dopant metal particles supported on the one or more structural oxides, the one or more dopant metals corresponding to dopant metal oxides having a Gibbs free energy of formation at 800° C. that is greater than a Gibbs free energy of formation at 800° C. for the one or more structural oxides by 200 kJ/mol or more, the particles of the one or more dopant metals having an average characteristic length of 10 μm or less, the dopant metal oxide comprising an oxide of Ni, Rh, Ru, Pd, Pt, Ir, or a combination thereof;exposing the catalyst composition to an oxidizing environment comprising a temperature of 500° C. to 1400° C.;{'sub': 2', '2', '2, 'exposing a hydrocarbon-containing stream to the catalyst composition in the presence of at least one of HO and COunder reforming conditions comprising a temperature of 500° C. or more to form a reformed ...

EXHAUST GAS PURIFICATION CATALYST

The present invention provides an exhaust gas purification catalyst including an alkaline earth metal supported in a highly dispersed state on a porous carrier. A catalyst layer of the exhaust gas purification catalyst provided by the invention has an alkaline earth metal-supporting region including a porous carrier, a catalyst metal belonging to the platinum group, and a sulfate of at least one type of alkali earth metal supported on the porous carrier. In a cross-section of this region, a Pearson correlation coefficient Ris at least 0.5 as calculated using α and β for each pixel obtained by carrying out area analysis by FE-EPMA under conditions of pixel size of 0.34 μm×0.34 μm, and measured pixel number 256×256, and by measuring the characteristic X-ray intensity (α: cps) of the alkaline earth metal element (Ae) and the characteristic X-ray intensity (β: cps) of the main constituent element of the inorganic compound constituting the porous carrier for each pixel. 1. An exhaust gas purification catalyst to be disposed in the exhaust pipe of an internal combustion engine for purifying exhaust gas emitted by the internal combustion engine , the exhaust gas purification catalyst comprisinga substrate anda catalyst layer formed on the substrate, whereinthe catalyst layer has an alkaline earth metal-supporting region includinga porous carrier composed of an inorganic compound,at least one catalyst metal belonging to the platinum group which is supported on the porous carrier and functions as an oxidation and/or reduction catalyst, andat least one sulfate of alkaline earth metal supported on the porous carrier, and wherein{'sub': Ae/M', 'Ae/M, 'when a cross-section of the alkaline earth metal-supporting region of the catalyst layer is subjected to area analysis by FE-EPMA under conditions of pixel (section) size of 0.34 μm×0.34 μm and number of measured pixels (sections) of 256×256, and a characteristic X-ray intensity (α: cps) of the alkaline earth metal element (Ae) ...

HONEYCOMB BODIES WITH VARYING CELL DENSITIES AND EXTRUSION DIES FOR THE MANUFACTURE THEREOF

A honeycomb body () including a plurality of radially-extending walls () intersecting with a plurality of circumferentially-extending walls (), the plurality of radially-extending walls () and the plurality of circumferentially-extending walls () form a plurality of circumferential zones (A, B, C) of cells (). The plurality of circumferential zones (A, B, C) of cells () includes a first zone of cells (A) including two or more first rings of cells () and having a first cell density, and a second zone of cells (B) including two or more rings of cells () having varying cell densities across the two or more rings of cells. Other structures and extrusion dies are disclosed. 1. A honeycomb body comprising:a plurality of intersecting porous walls comprised of a plurality of radially-extending walls and a plurality of circumferentially-extending walls, wherein the intersecting porous walls are comprised of porous ceramic material;wherein the plurality of radially-extending walls and the plurality of circumferentially-extending walls form a plurality of circumferential zones of cells; and a first zone of cells comprising two or more rings of cells and having a first cell density; and', 'a second zone of cells comprising two or more rings of cells having varying cell densities across the two or more rings of cells., 'wherein the plurality of circumferential zones of cells comprises2. The honeycomb body of claim 1 , wherein the cell densities vary linearly across the second zone of cells.36-. (canceled)7. The honeycomb body of claim 1 ,wherein the circumferentially-extending walls have circumferentially-extending wall thicknesses and the radially-extending walls have radially-extending wall thicknesses, andwherein at least one of the circumferentially-extending wall thicknesses and the radially-extending wall thicknesses change as a function of their distance to a center of the honeycomb body.8. The honeycomb body of claim 1 ,wherein the circumferentially-extending walls have ...