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В данной заявке описана каталитическая дегидратация молочной кислоты в акриловую кислоту, отличающаяся высокой конверсией молочной кислоты, высокой селективностью получения акриловой кислоты, высоким выходом акриловой кислоты и соответственно низкой селективностью получения и мольными выходами нежелательных побочных продуктов. Смешанный фосфатный катализатор для конверсии молочной кислоты в акриловую кислоту содержит, по меньшей мере, две различные фосфатные соли, выбранные из группы, состоящей из формул (I), (II), (III) и (IV):где Z представляет собой металл I группы, и где в каждой из формул (II)-(IV) каждый X независимо представляет собой металл I группы или II группы, при следующих условиях:в формуле (II), если X представляет собой металл I группы, то а означает 0, и если X представляет собой металл II группы, то а означает 1;в формуле (III), если X представляет собой металл I группы, то b означает 1, и если X представляет собой металл II группы, то b означает 0; и,в формуле (IV), если ...

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Изобретение относится к композиции катализатора, пригодной для обработки выхлопного газа, содержащей: а) алюмосиликатный цеолитный материал, включающий в себя диоксид кремния и диоксид алюминия в каркасе СНА и имеющий соотношение оксида кремния и оксида алюминия (SAR) 10–25; b) 1-5 массовых процентов базового металла (В), считая на общую массу цеолитного материала, где указанный базовый металл расположен в указанном цеолитном материале в виде свободного и/или внекаркасного обмененного металла; с) щелочноземельный металл (в общем A), расположенный в указанном цеолитном материале в виде свободного и/или внекаркасного обмененного металла, где Ви Априсутствуют соответственно в мольном соотношении 15:1-1:1, причем диоксид алюминия содержит алюминий (Al), который является частью каркаса цеолита, и композиция катализатора имеет мольное соотношение (В+А):Al 0,1-0,4, и Aпредставляет собой кальций. Изобретение также относится к каталитически активному слою из пористого оксида, каталитическому изделию ...

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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.

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Изобретение относится к композициям катализатора гидрокрекинга, их получению и применению в процессе гидрокрекинга. Композиция катализатора без носителя для гидрокрекинга включает в себя один или несколько металлов группы VIb, один или несколько неблагородных металлов группы VIII, один или несколько цеолитов и, необязательно, тугоплавкий оксидный материал, получена осаждением металлов группы VIb, неблагородных металлов группы VIII, и, необязательно, тугоплавкого оксидного материала в присутствии цеолита. Способ получения вышеуказанной композиции катализатора, в котором одно или несколько соединений металлов группы VIb объединяют с одним или несколькими соединениями неблагородных металлов группы VIII, и с цеолитом, в присутствии протоносодержащей жидкости и щелочного соединения, и после осаждения извлекают композицию катализатора. Технический результат - получение каталитической композиции, обладающей очень высокой активностью при гидрировании моноароматических соединений, а также существенно ...

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Изобретение относится к катализатору Фишера-Тропша, содержащему кобальт и цинк, к способу его получения и применению в способе Фишера-Тропша. Описан катализатор, содержащий совместно осажденные частицы кобальта и цинка, причем указанные частицы имеют среднеобъемный размер частиц менее 150 мкм и распределение частиц по размерам, при котором, по меньшей мере, 90% объема частиц катализатора имеет размер между 0,4 и 2,5-кратный по отношению к среднему размеру частиц, и где атомное соотношение цинка и кобальта находится в пределах от 40 до 0,1. Описан также способ получения катализатора, по которому кислотный раствор, содержащий ионы цинка и ионы кобальта при общей концентрации от 0,1 до 5 мол/литр, и щелочной и кислотный раствор подают в реактор, содержащий водную среду, где кислотный раствор и щелочной раствор контактируют в водной среде при значении рН 4-9, отклоняющемуся самое большое на ±0,2 рН-единицы от заданного значения, при перемешивании, частота которого обусловлена подводимой мощностью ...

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Изобретение относится к технологии получения и использования в производстве фотокатализаторов для разложения органических веществ и загрязнителей при очистке воды, воздуха и в других фотохимических процессах, в газовых и оптических сенсорах. Предлагаемый фотокатализатор содержит матрицу на основе аморфного диоксида кремния и равномерно распределенный в матрице активный компонент, в качестве которого фотокатализатор содержит гидроксосиликат кобальта состава Co3(Si2O5)2(OH)2. При этом соотношение компонентов в фотокатализаторе составляет, мас.%: гидроксосиликат кобальта - 0,2-3,0; аморфный диоксид кремния - 97,0-99,8. Также изобретение относится к способу получения предлагаемого фотокатализатора. Технический результат - разработка состава фотокатализатора для разложения органических соединений, обеспечивающего расширение номенклатуры используемых в настоящее время фотокатализаторов, при этом фотокатализатор может быть получен технологически простым и надежным способом. 2 н.п. ф-лы, 3 ил., ...

СПОСОБ ПОЛУЧЕНИЯ ПАЛЛАДИЙСОДЕРЖАЩЕГО КАТАЛИЗАТОРА ГИДРИРОВАНИЯ

Изобретение относится к области физической химии и может быть использовано для регулирования скорости автокаталитических реакций гидрирования. В способе получения палладийсодержащего катализатора гидрирования путем восстановления двухвалентного палладия из исходного соединения и осаждения восстановленного палладия на углеродный материал в качестве исходного соединения используют тетрааквапалладий (II) перхлорат, а восстановленный палладий осаждают на углеродный наноматериал; в качестве углеродного наноматериала могут использовать фуллерен С60, углеродные нанотрубки, катодный депозит; в качестве углеродного наноматериала могут использовать смесь фуллеренов С60 и С70 при следующем соотношении, мас.%: фуллерен С60 - 60-80, фуллерен С70 - 20-40. Таким образом решается задача создания способа получения палладийсодержащего катализатора гидрирования, который обладает большей каталитической активностью и работает в более мягких условиях (при комнатной температуре и нормальном (атмосферном) давлении ...

КРИСТАЛЛИЧЕСКИЙ ОКСИГИДРОКСИД-МОЛИБДОВОЛЬФРАМАТ ПЕРЕХОДНОГО МЕТАЛЛА

Разработан активный катализатор гидрообработки, предназначенный для использования в процессах конверсии углеводородов: гидроденитрификации, гидрообессеривания, гидродеметаллирования, гидродесиликации, гидродеароматизации, гидроизомеризации, гидроочистки, гидрофайнинга и гидрокрекинга. Катализатор представляет собой материал кристаллического оксигидроксида-молибдовольфрамата металла, имеющего формулу:(NH)M(OH)MoWO,где а находится в диапазоне от 0,1 до 10; М представляет собой металл, выбранный из Mg, Mn, Fe, Co, Ni, Cu, Zn и их смесей; b находится в диапазоне от 0,1 до 2; х находится в диапазоне от 0,5 до 1,5; у находится в диапазоне от 0,01 до 0,4; где сумма (x+y) должна быть ≤1,501; z представляет собой число, которое соответствует сумме валентностей а, M, b, x и y; при этом материал имеет порошковую рентгендифрактограмму, показывающую пики при d-расстояниях, перечисленных в таблице A:Таблица А3 н. и 7 з.п. ф-лы, 1 ил., 1 табл., 3 пр.

СПОСОБ ПОЛУЧЕНИЯ ПЛАТИНОСОДЕРЖАЩИХ ЭЛЕКТРОКАТАЛИЗАТОРОВ В БЕЗОРГАНИЧЕСКИХ СРЕДАХ

Изобретение относится к способу получения функциональных композитных материалов. Предложен способ получения платиносодержащих электрокатализаторов в безорганических средах, включающий получение раствора платинохлороводородной кислоты, смешение с порошком дисперсных углеродных или неуглеродных носителей, их смесей и композиций с удельной поверхностью более 60 м2/г, диспергирование полученной смеси и химическое восстановление соединений платины с последующим осаждением наночастиц металлической платины на дисперсный носитель при пропускании монооксида углерода через раствор, отличающийся тем, что в качестве щелочного агента используются водные растворы гидроксида натрия, или гидроксида калия, или гидроксида лития, при этом синтез проводят в одну стадию при температуре раствора от 10÷98°С, а растворителем для всех используемых реактивов и создания жидкой среды является бидистиллированная или деионизированная вода. Технический результат - создание экологичного способа получения композитных материалов ...

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 ...

СПОСОБ ИЗГОТОВЛЕНИЯ КАТАЛИЗАТОРА РАЗЛОЖЕНИЯ АММИАКА

Изобретение относится к способу изготовления катализатора разложения аммиака, включающему нанесение на поверхность носителя путем плазменного напыления сначала порошковой композиции для формирования адгезионного слоя и затем порошковой композиции для формирования каталитически активного слоя с последующим формированием слоя активатора, согласно изобретению дополнительно после формирования слоя активатора восстанавливают катализатор в потоке водорода при температурах 300-500°С, при этом в качестве порошковой композиции для формирования адгезионного слоя используют алюмоникелевый порошок, в качестве порошковой композиции для формирования каталитически активного слоя используют ZrO2 или Ce0.5Zr0.5O2 или их смеси, а формирование слоя активатора осуществляют путем пропитки подготовленного носителя предшественником активного компонента - раствором комплекса рутения [Ru[(NH3)nClm]OHp, где n=5-6, m=0-1, р=1-2. Техническим результатом изобретения является создание эффективного и термостабильного ...

КАТАЛИЗАТОР СИНТЕЗА ФИШЕРА-ТРОПША, СПОСОБ ЕГО ПРИГОТОВЛЕНИЯ И ПРИМЕНЕНИЯ

Изобретение относится к катализаторам синтеза Фишера-Тропша. Описан микросферический железосодержащий катализатор для синтеза Фишера-Тропша в высокотемпературном реакторе со взвешенным слоем, причем катализатор содержит элемент Fe в качестве основного компонента, характеризующийся тем, что катализатор также включает в себя K-промотор, промотор переходного металла М, а также модифицированный структурный промотор S, причем промотор переходного металла М представляет собой любую комбинацию двух, либо большего количества видов металлов, выбранных из Cr, Cu, Mn, а также Zn; структурный промотор S представлен в виде SiOи/или AlO, при этом как SiO, так и AlOмодифицированы при помощи MoO, TiOи/или ZrO; а массовая доля каждого компонента составляет Fe:M:K:S=100:1-100:1-12:1-80, где металлические компоненты рассчитываются на основе металлических элементов, а структурный промотор рассчитывается на основе оксидов. Описан способ приготовления указанного выше железосодержащего катализатора, который содержит ...

КАТАЛИЗАТОР ПАРОВОЙ КОНВЕРСИИ МОНОКСИДА УГЛЕРОДА,СПОСОБ ЕГО ПРИГОТОВЛЕНИЯ И СПОСОБ ЕГО ИСПОЛЬЗОВАНИЯ

Изобретение относится к способу получения водорода паровой конверсией монооксида углерода и катализаторам для этого процесса и может найти применение в разных отраслях промышленности. Описан железо-хромовый катализатор, содержащий в своем составе фазу гидроксосоединения железа и хрома со структурой гетита и/или гидрогематита, способ его приготовления и использования в процессе паровой конверсии монооксида углерода. Катализатор может дополнительно содержать медь. Катализатор получают осаждением растворами карбонатов или гидроксидов аммония, натрия или калия из растворов смеси нитратов железа 2+ и 3+ и хрома 3+, полученных окислительно-восстановительным взаимодействием металлического железа, соединений хрома 6+ и азотной кислоты. Процесс паровой конверсии монооксида углерода с использованием этого катализатора по предлагаемому способу проводят в области выше 250°С. Технический результат - низкое содержание в катализаторе серы (не более 0.03 мас.%) и хрома 6+ (не более 0.05 мас.%), высокая ...

МАТЕРИАЛ ДЛЯ НОСИТЕЛЯ КАТАЛИЗАТОРА С ВЫСОКОЙ КИСЛОРОДНОЙ ЕМКОСТЬЮ И СПОСОБ ЕГО ПРИГОТОВЛЕНИЯ

... 1. Смешанный оксид из оксида церия и оксида циркония, обладающий многофазной кубической формой кристаллизации и кислородной емкостью более 300 Ммоль O2/г образца после старения в течение 4 час при 1000° С. 2. Смешанный оксид по п.1, в котором кислородная емкость после старения в течение 4 час при 1000° С больше 315 Ммоль O2/г образца. 3. Смешанный оксид по п.2, в котором кислородная емкость после старения в течение 4 час при 1000° С больше 330 Ммоль O2/г образца. 4. Смешанный оксид по п.1, который имеет скорость отдачи кислорода больше 1,0 мг-О2/м2-мин. 5. Смешанный оксид по п.4, который имеет скорость отдачи кислорода больше 2,0 мг-О2/м2-мин. 6. Смешанный оксид по п.5, который имеет скорость отдачи кислорода больше 5,0 мг-О2/м2-мин. 7. Смешанный оксид по п.1, который на основании определения с помощью метода рассеяния рентгеновских лучей под малыми углами (SAXS) имеет нормализованную интенсивность рассеяния I(Q) в пределах от примерно 47 до примерно 119 при векторе рассеяния Q, равном ...

КАТАЛИЗАТОР И СПОСОБ КОНВЕРТАЦИИ ПРИРОДНОГО ГАЗА В ВЫСОКОУГЛЕРОДИСТЫЕ СОЕДИНЕНИЯ

... 1. Композиция для окислительного реформинга углеводородов, содержащая ! катализатор состава M1, W, Mn Ox, где ! M1 - металл, выбранный из группы, состоящей из группы IA и группы VIII Периодической таблицы элементов, и M1 содержится в количестве от 0,01 моль до менее 2 моль; ! W - вольфрам и W содержится в количестве от 0,01 моль до менее 2 моль; ! Mn - марганец и Mn содержится в количестве от 0,3 моль до менее 3 моль; ! О - кислород; ! Х - значение от 0,1 до 4. ! 2. Композиция по п.1, в которой элементом группы IA является натрий, и натрий содержится в количестве от 0.02 моль до 1 моль. ! 3. Композиция по п.1, в которой элементом группы IA является натрий, и натрий содержится в количестве от 0.02 моль до 0.5 моль. ! 4. Композиция по п.1, в которой элементом группы VIII является кобальт, и кобальт содержится в количестве от 0.03 моль до 1.0 моль. ! 5. Композиция по п.1, в которой элементом группы VIII является кобальт, и кобальт содержится в количестве от 0,03 моль до 0,5 моль. ! 6. Композиция ...

Каталическая конверсия гидроксипропионовой кислоты или ее ее производных в акриловую кислоту и ее производные

... 1. Способ получения акриловой кислоты, производных акриловой кислоты или их смесей, включающий стадию, на которой вводят в контакт поток, содержащий гидроксипропионовую кислоту, производные гидроксипропионовой кислоты или их смеси, с катализатором, содержащим:(a) по меньшей мере, один анион конденсированного фосфата, который выбирают из группы, состоящей из формул (I), (II) и (III)где n составляет, по меньшей мере, 2 и m составляет, по меньшей мере, 1; и(b) по меньшей мере, два различных катиона,при этом катализатор, по существу, нейтрально заряжен; и дополнительно при этом мольное соотношение фосфора и указанных, по меньшей мере, двух различных катионов составляет от приблизительно 0,7 до приблизительно 1,7, с получением таким образом акриловой кислоты, производных акриловой кислоты или их смесей в результате приведения в контакт указанного потока с указанным катализатором.2. Способ по п. 1, отличающийся тем, что указанный поток дополнительно содержит:(a) разбавитель; и(b) инертный газ ...

КОМПОЗИЦИЯ С ПОВЫШЕННОЙ КИСЛОТНОСТЬЮ НА ОСНОВЕ ОКСИДА ЦИРКОНИЯ, ОКСИДА ТИТАНА И ОКСИДА ВОЛЬФРАМА, СПОСОБ ПОЛУЧЕНИЯ И ПРИМЕНЕНИЕ ДЛЯ ОБРАБОТКИ ВЫХЛОПНЫХ ГАЗОВ

... 1. Композиция на основе оксида циркония, оксида титана и оксида вольфрама в следующих массовых пропорциях этих различных компонентов: !оксид титана: 20-50% ! оксид вольфрама: 1-20% ! достаточное количество до 100% оксида циркония, ! отличающаяся тем, что она имеет кислотность, определяемую в результате испытания с использованием метилбутанола, равную, по меньшей мере, 90%. ! 2. Композиция на основе оксида циркония, оксида титана, оксида вольфрама и, по меньшей мере, одного оксида другого элемента М, выбранного из кремния, алюминия, железа, молибдена, марганца, цинка, олова и редкоземельных металлов в следующих массовых пропорциях этих различных элементов: ! оксид титана: 20-50% ! оксид вольфрама: 1-20% ! оксид элемента М: 1-20% ! достаточное количество до 100% оксида циркония, ! отличающаяся тем, что она также имеет кислотность, определяемую в результате испытания с использованием метилбутанола, равную, по меньшей мере, 90%. ! 3. Композиция по любому из предыдущих пунктов, отличающаяся ...

КАТАЛИЗАТОР ФИШЕРА-ТРОПША, ВКЛЮЧАЮЩИЙ ОКСИД КОБАЛЬТА И ЦИНКА

... 1. Катализатор, подходящий для катализирования реакции Фишера-Тропша, включающий металлический кобальт, нанесенный на оксид цинка и имеющий следующее распределение размера частиц по объему: ! <10% имеет размер частиц ниже 1 мкм, ! 70-99% имеет размер частиц между 1 и 5 мкм, и ! <20% имеет размер частиц выше 5 мкм. ! 2. Катализатор по п.1, имеющий следующее распределение размера частиц по объему: ! <10% имеет размер частиц ниже 1 мкм, ! 75-95% имеет размер частиц между 1 и 5 мкм, и ! <15% имеет размер частиц выше 5 мкм. ! 3. Катализатор по п.1 или 2, в котором средняя объемная величина частиц составляет менее чем 25 мкм, предпочтительно от 1,5 до 15 мкм. ! 4. Катализатор по п.1 или 2, в котором объем пор главным образом образован порами, имеющими диаметр в диапазоне 5-100 нм. ! 5. Катализатор по п.1 или 2, в котором объем пор составляет менее чем 0,5 мл/г, предпочтительно менее чем 0,45 мл/г. ! 6. Катализатор по п.1 или 2, в котором удельная поверхность составляет менее чем 120 м2/г, предпочтительно ...

Способ получения переосажденного гидроксида алюминия и способ получения гамма-оксида алюминия на его основе

Изобретение относится к способу получения гидроксида алюминия, используемого для приготовления носителей для катализаторов. Заявленный способ включает однопоточное осаждение из раствора алюмината натрия азотной кислотой, его стабилизацию, отмывку, фильтрацию, при этом процесс осаждения ведут при температуре 50-54°С и величине рН 7,1-7,4 в непрерывном режиме, а стабилизацию осуществляют при температуре 72-95°С и величине рН 9,3-9,6. Изобретение также относится к способу получения гамма-оксида алюминия, используемого для приготовления носителей для катализаторов. Технический результат заключается в повышении механической прочности гамма-оксида алюминия с сохранением его водостойкости, которая характеризуется процентом неразрушающихся при контакте с водой гранул. 2 н. и 8 з.п. ф-лы, 3 табл., 6 пр.

РОДИЙСОДЕРЖАЩИЕ КАТАЛИЗАТОРЫ

... 1. Способ получения катализатора или прокатализатора, подходящих для содействия получению алкенилалканоатов, включающий введение палладий- и родийсодержащих предшественников в контакт с материалом носителя, прокаливание введенного в контакт материала носителя в невосстанавливающей атмосфере и восстановление палладий- и родийсодержащих предшественников в результате введения восстанавливающей среды в контакт с материалом носителя с получением катализатора или прокатализатора получения алкенилалканоатов. 2. Способ по п.1, дополнительно включающий введение золотосодержащего предшественника в контакт с материалом носителя и восстановление золотосодержащего предшественника. 3. Способ по любому из пп.1 или 2, где стадия введения в контакт включает совместное импрегнирование палладий- и родийсодержащими предшественниками с последующим импрегнированием золотосодержащим предшественником. 4. Способ по любому из пп.1 или 2, где стадия введения в контакт включает совместное импрегнирование палладий- ...

ПРИМЕНЕНИЕ ИСТОЧНИКА ХРОМА В СОЧЕТАНИИ С ОСАЖДЕННЫМ КАТАЛИЗАТОРОМ В РЕАКЦИИ ФИШЕРА-ТРОПША

... 1. Применение источника хрома в сочетании с осажденным железным катализатором в высокотемпературном процессе Фишера-Тропша с целью преобразования реагентов в виде СО и Н2 в продукты реакции в виде углеводородов и возможно их оксигенатов путем введения в контакт СО и H2 с источником хрома в сочетании с осажденным железным катализатором в ходе двухфазной высокотемпературной реакции Фишера-Тропша, которую осуществляют в реакторе с псевдоожиженным слоем, при этом реагенты и продукты реакции находятся в газообразной фазе, а катализатор в твердой фазе. 2. Применение по п.1 для достижения, по меньшей мере, одного результата, выбранного из группы, включающей снижение концентрации органической кислоты в углеводородах и их оксигенатах, образующихся в результате процесса Фишера-Тропша, повышение активности осажденного железного катализатора с целью преобразования СО и H2 в углеводороды и возможно в их оксигенаты, снижение концентрации метана, образующегося в результате процесса Фишера-Тропша, уменьшение ...

Способ получения фотокаталитически активной пленки

Изобретение относится к области получения фотокаталитически активных полупроводниковых пленок. Предложен способ получения фотокаталитически активной пленки, включающий осаждение ионов Cu+2 в виде оксида меди или гидроксида меди из раствора неорганической соли меди на подложку. Осаждение ведут из раствора аммиаката хлорида меди(II) с концентрацией 0,3-3,0 моль/л при температуре 45-75°С при концентрации свободного аммиака 4,0-11,2 моль/л. При этом в качестве подложки используют силикагель, стекло, никелевую фольгу. Способ позволяет получать фотокаталитически активную пленку в одну стадию как на плоских образцах стекла, металлической фольги, так и на порошкообразных материалах, например на порошке силикагеля. 3 ил., 4 пр.

СПОСОБ ПОЛУЧЕНИЯ ФОТОКАТАЛИЗАТОРА ИЗ ПОРОШКА ОКСИДА ЦИНКА МАССОВОГО ПРОИЗВОДСТВА

Изобретение относится к способу получения фотокатализатора из порошка оксида цинка массового производства, который заключается в том, что частицы ZnO, например, цинковых белил, подвергают дополнительной обработке, обеспечивающей повышение их фотокаталитической активности, в процессе которой порошок диспергируют в содержащей аммиак-гидрат дистиллированной воде до растворения находящегося в порошке гидроксида цинка и образования водорастворимой комплексной соли гидроксид гексааммиакат цинка, отстаивают или центрифугируют полученную суспензию для отделения жидкости от частиц, промывают полученный осадок частиц дистиллированной водой в процессе диспергирования, и разделяют полученную суспензию отстаиванием, центрифугированием на две фракции с размером частиц 200 нм и менее, и с размером частиц более 200 нм, после чего полученные суспензии декантируют и высушивают до постоянного веса осадка, при этом частицы размером менее 200 нм используют в качестве фотокатализатора. Технический результат ...

СПОСОБ ПОЛУЧЕНИЯ ОКСИДНОГО КАТАЛИЗАТОРА И СПОСОБ ПОЛУЧЕНИЯ НЕНАСЫЩЕННОГО НИТРИЛА

Предложен способ получения оксидного катализатора для газофазного контактного аммоксидирования, содержащего Mo, V, Sb и Nb и имеющего состав, представимый следующей формулой (1): MoVSbNbZO, в которой Z означает по меньшей мере один элемент, выбранный из группы, состоящей из W, La, Ce, Yb и Y; значения a, b, c, и d лежат в интервалах 0,01≤a≤0,35, 0,01≤b≤0,35, 0,01≤c≤0,20, и 0,00≤d≤0,10, соответственно; а n означает число, удовлетворяющее балансу валентностей атомов, причем способ включает: - стадию приготовления сырья, на которой получают жидкую водную смесь, содержащую Mo, V, Sb и Nb; - стадию старения, на которой жидкую водную смесь подвергают выстаиванию или перемешиванию в течение периода времени больше или равного 5 минутам и меньше или равного 50 часам, при этом каждое из указанных действий осуществляют при температуре выше 30°C;- стадию сушки, на которой жидкую водную смесь сушат, получая в результате сухой порошок; и - стадию обжига, на которой сухой порошок обжигают, получая тем ...

КАТАЛИЗАТОР ФИШЕРА-ТРОПША

... 1. Катализатор, подходящий для использования при катализе реакции Фишера-Тропша, содержащий металлический кобальт, нанесенный на оксид цинка, и оксид циркония (IV) и/или оксид алюминия в количестве в диапазоне от 0,5 до 2,5 мас.% при расчете на металл, приходящийся на массу прокаленного катализатора. ! 2. Катализатор по п.1, в котором количество циркония и/или алюминия находится в диапазоне от 0,8 до 2 мас.%. ! 3. Катализатор по п.1, в котором отношение количества цинка к количеству кобальта (при расчете на металл) находится в диапазоне от 75 до 0,1, предпочтительно от 20 до 0,3. ! 4. Катализатор по п.2, в котором отношение количества цинка к количеству кобальта (при расчете на металл) находится в диапазоне от 75 до 0,1, предпочтительно от 20 до 0,3. ! 5. Катализатор по любому из пп.1-4, в котором количество цинка находится в диапазоне от 5 до 90 мас.%, а количество кобальта находится в диапазоне от 1 до масс. 25%, при расчете на металл, приходящийся на массу прокаленного катализатора.

Ce-Zr-R-O КАТАЛИЗАТОРЫ, ПРЕДМЕТЫ, ВКЛЮЧАЮЩИЕ Ce-Zr-R-O КАТАЛИЗАТОРЫ, И СПОСОБЫ ПОЛУЧЕНИЯ И ПРИМЕНЕНИЯ Ce-Zr-R-O КАТАЛИЗАТОРОВ

... 1. Катализатор восстановления NOx, включающий: ! соединение Cea-Zrb-Rc-Ad-Me-Ox, в котором R представляет собой W или Mn; если R представляет собой W, А выбирают из группы, включающей Мо, Та, Nb и комбинации, включающие по крайней мере один из перечисленных вариантов А; если R представляет собой Mn, А выбирают из группы, включающей W, Мо, Та, Nb и комбинации, включающие по крайней мере один из перечисленных вариантов А; М представляет собой трехвалентный ион редкоземельного элемента; a+b+c+d+e=1; а составляет от примерно 0,1 до примерно 0,6; b составляет от примерно 0,25 до примерно 0,7; с составляет от примерно 0,02 до примерно 0,5; если R представляет собой Mn, d составляет от примерно 0,04 до примерно 0,2, а если R представляет собой W, d меньше или равно примерно 0,2; е меньше или равно примерно 0,15; катализатор способен восстанавливать NOx. ! 2. Катализатор по п.1, в котором трехвалентный ион редкоземельного элемента выбирают из группы, включающей Sm, Gd, Dy, Er, Yb, Но, Tm, Lu и ...

КОМПОЗИЦИЯ С ПОВЫШЕННОЙ КИСЛОТНОСТЬЮ НА ОСНОВЕ ОКСИДОВ ЦИРКОНИЯ, КРЕМНИЯ И, ПО МЕНЬШЕЙ МЕРЕ, ОДНОГО ДРУГОГО ЭЛЕМЕНТА, ВЫБРАННОГО ИЗ ТИТАНА, АЛЮМИНИЯ, ВОЛЬФРАМА, МОЛИБДЕНА, ЦЕРИЯ, ЖЕЛЕЗА, ОЛОВА, ЦИНКА И МАРГАНЦА

... 1. Композиция на основе оксида циркония, оксида кремния и, по меньшей мере, одного оксида другого элемента М, выбранного из титана, алюминия, вольфрама, молибдена, церия, железа, олова, цинка и марганца в следующих массовых пропорциях различных элементов: ! оксид кремния: 5-30%, ! оксид элемента М:1-20%, ! достаточное количество до 100% оксида циркония, ! отличающаяся тем, что она обладает, кроме того, кислотностью, определенную в результате испытания с использованием метилбутанола, равную, по меньшей мере, 90%. ! 2. Композиция по п.1, отличающаяся тем, что элемент М представляет собой вольфрам, и после кальцинации при 900°С в течение 4 ч она обладает удельной поверхностью, равной, по меньшей мере, 65 м2/г. ! 3. Композиция по п.1, отличающаяся тем, что элемент М отличен от вольфрама, и после кальцинации при 900°С в течение 4 ч она имеет удельную поверхность, равную, по меньшей мере, 95 м2/г. ! 4. Композиция по любому из предыдущих пунктов, отличающаяся тем, что она обладает кислотностью ...

КОМПОЗИЦИЯ, СОДЕРЖАЩАЯ ФТОРЗАМЕЩЕННЫЕ ОЛЕФИНЫ, И СПОСОБЫ ЕЕ ПРИМЕНЕНИЯ

МЕЗОПОРИСТЫЙ И МАКРОПОРИСТЫЙ КАТАЛИЗАТОР НА ОСНОВЕ НИКЕЛЯ, ПОЛУЧЕННЫЙ СОВМЕСТНЫМ ПЛАСТИЦИРОВАНИЕМ И ИМЕЮЩИЙ МЕДИАННЫЙ ДИАМЕТР МАКРОПОР, ПРЕВЫШАЮЩИЙ 300 НМ, И ЕГО ПРИМЕНЕНИЕ ПРИ ГИДРИРОВАНИИ УГЛЕВОДОРОДОВ

КАТАЛИТИЧЕСКАЯ СИСТЕМА НА ОСНОВЕ АЗОТИРОВАННОГО СМЕШАННОГО ОКСИДА И СПОСОБ ПОЛУЧЕНИЯ ЭТИЛЕН-НЕНАСЫЩЕННЫХ КАРБОНОВЫХ КИСЛОТ ИЛИ СЛОЖНЫХ ЭФИРОВ

... 1. Способ получения этилен-ненасыщенных карбоновых кислот или сложных эфиров, предпочтительно α, β этилен-ненасыщенных карбоновых кислот или сложных эфиров, содержащий этапы, где вызывают контакт формальдегида или его подходящего источника с карбоновой кислотой или сложным эфиром в присутствии катализатора и возможно в присутствии спирта, где данный катализатор содержит азотированный оксид металла, имеющий, по меньшей мере, два типа катионов металлов Ми М, где Мвыбирают из металлов группы 2, 3, 4, 13 (также называемой IIIA) или 14 (также называемой IVA) периодической таблицы, и Мвыбирают из металлов группы 5 или 15 (также называемой VA) периодической таблицы.2. Способ по п.1, где азотированный оксид металла состоит из от двух до четырех катионов металла и анионов кислорода и азота.3. Способ по любому из пп.1 или 2, где металл типа Мвыбирают из одного или нескольких металлов в списке, состоящем из: - Be, Mg, Ca, Sr, Ba, Ra, B, Al, Ga, In, Tl, Sc, Y, La, Ac, Si, Ge, Sn, Pb, Ti, Zr, Hf и Rf ...

КАТАЛИЗАТОР НА ОСНОВЕ СМЕШАННЫХ ОКСИДОВ И СПОСОБ ПОЛУЧЕНИЯ КАРБОНОВЫХ КИСЛОТ ИЛИ СЛОЖНЫХ ЭФИРОВ С ЭТИЛЕНОВОЙ НЕНАСЫЩЕННОСТЬЮ

... 1. Катализатор для взаимодействия формальдегида или его подходящего источника с карбоновой кислотой или сложным эфиром для получения карбоновой кислоты или сложного эфира с этиленовой ненасыщенностью, предпочтительно карбоновых кислот или сложного эфира с этиленовой ненасыщенностью в α, β-положении, где катализатор включает оксид металла, имеющий, по меньшей мере, два типа катионов металла, Ми М, где Мпредставляет собой, по меньшей мере, один металл, выбранный из группы 3 или 4 в 4-6 периодах Периодической таблицы, группы 13 в 3-5 периодах Периодической таблицы, или остающихся элементов в лантаноидной группе (а именно, скандия, иттрия, лантаноидных элементов, титана, циркония, гафния, алюминия, галлия, индия), и Мпредставляет собой, по меньшей мере, один металл, выбранный из группы 5 в 5 или 6 периодах Периодической таблицы или группы 15 в 4 или 5 периодах Периодической таблицы (а именно, ниобия, тантала, мышьяка и сурьмы),в котором отношение М:Mнаходится в диапазоне от 10:1 до 1:10,и в ...

СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРА НА ОСНОВЕ ТИТАНОВОГО ЦЕОЛИТА

... 1. Способ получения катализатора для применения в реакции конверсии углеводородов, где указанный катализатор содержит титановый цеолит и углеродистый материал, где катализатор содержит указанный углеродистой материал в количестве от 0,01 до 0,5 мас.% от общей массы титанового цеолита, содержащегося в катализаторе, где способ содержит(i) получение катализатора, содержащего титановый цеолит;(ii) осаждение углеродистого материала на катализаторе в соответствии с (i) в количестве от 0,01 до 0,5 мас.% от общей массы титанового цеолита, содержащегося в катализаторе, путем контакта указанного катализатора, перед применением катализатора в указанной реакции конверсии углеводородов, с жидкостью, содержащей по меньшей мере один углеводород в атмосфере инертного газа, при повышенной температуре, с получением катализатора, содержащего углеродистый материал,где на стадии (ii) катализатор не контактирует с газом, содержащим кислород, и где после стадии (ii) катализатор не подвергается дополнительной ...

КАТАЛИЗАТОР ДЛЯ СЕЛЕКТИВНОГО КАТАЛИТИЧЕСКОГО ВОССТАНОВЛЕНИЯ (SCR), СОДЕРЖАЩИЙ КОМПОЗИТНЫЙ ОКСИД, СОДЕРЖАЩИЙ V И SB, СПОСОБ ЕГО ПОЛУЧЕНИЯ И ЕГО ПРИМЕНЕНИЕ ДЛЯ УДАЛЕНИЯ ОКСИДОВ АЗОТА

СЕРОСОДЕРЖАЩАЯ КРЕМНЕЗЕМНАЯ ФРАКЦИЯ

... 1. Состав, содержащий вещество, имеющее эмпирическую формулу (SiO)(OH)MOF, где М присутствует в качестве необходимости и упомянутый М представляет собой катион, по меньшей мере, одного из следующих металлов или металлоидов: бор, магний, алюминий, кальций, титан, ванадий, марганец, железо, кобальт, никель, медь, цинк, цирконий, молибден, палладий, серебро, кадмий, олово, платина, золото и висмут, где F присутствует в случае необходимости и указанный F представляет собой, по меньшей мере, одно из следующих соединений: функционализованный органосилан, серосодержащий органосилан, аминосодержащий органосилан и алкилсодержащий органосилан с покрытием поверхности от 0,01% до 100%, и где молярное отношение y/x составляет от 0,01 до 0,5, молярное отношение x/z составляет от 0,1 до 300, а молярное отношение a/z зависит от свойства определенного оксида металла.2. Состав по п.1, в котором указанное вещество представляет собой водную суспензию с содержанием указанного вещества от 3% по массе до 15% ...

СПОСОБ ГИДРОДЕХЛОРИРОВАНИЯ ДЛЯ ПОЛУЧЕНИЯ ДИГИДРОФТОРИРОВАННЫХ ОЛЕФИНОВ

... 1. Способ получения фторсодержащих олефинов, включающий контакт хлорфторалкена формулы RCCl=CClR, где каждый Rявляется перфторалкильной группой, независимо выбранной из группы, содержащей CF, CF, n-CF, i-CF, n-CF, i-CFи t-CF, с водородом в присутствии катализатора при температуре, достаточной, чтобы вызвать замещение заместителей хлора хлорфторалкена водородом, для получения фторсодержащего олефина формулы E- или Z-RCH=CHR, где каждый Rи Rявляются перфторалкильными группами, независимо выбранными из группы, содержащей CF, CF, n-CF, i-CF, n-CF, i-CFи t-CF, где указанный катализатор является композицией, включающей хром и никель.2. Способ по п.1, где указанный катализатор является композицией, включающей от приблизительно 10% до приблизительно 90% хрома и от приблизительно 90% до приблизительно 10% никеля.3. Способ по п.1, где каталитическая композиция дополнительно включает щелочной металл, выбранный из калия, цезия и рубидия.4. Способ по п.3, где указанный щелочной металл составляет от ...

СПОСОБ ПОЛУЧЕНИЯ БАЗОВОГО СОСТАВА СМАЗОЧНОГО МАСЛА

... 1. Способ получения базового состава смазочного масла, включающийпервую стадию приведения в контакт исходных материалов, содержащих нормальные парафины, имеющие не менее 20 атомов углерода, с первым катализатором в присутствии молекулярного водорода с получением первого получаемого масла, ивторую стадию приведения в контакт первого получаемого масла со вторым катализатором в присутствии молекулярного водорода с получением второго получаемого масла, гдепервый катализатор содержит первый носитель, в котором доля количества NH, которое десорбируется при 300-800°C, в расчете на общее количество NH, которое может десорбироваться, составляет 80-90%, при десорбции NHс программируемым изменением температуры; первый металл, который представляет собой по меньшей мере один металл, выбранный из металлов, которые принадлежат к Группе VI Периодической таблицы, и нанесенный на первый носитель; и второй металл, который представляет собой по меньшей мере один металл, выбранный из металлов, которые принадлежат ...

Катализатор для очистки терефталевой кислоты гидрированием

Katalysator zum Hydrieren von organischen Verbindungen

Stickoxid-Speichermaterial und daraus hergestellter Stickoxid-Speicherkatalysator

Die Erfindung betrifft ein Stickoxid-Speichermaterial, welches wenigstens eine Speicherkomponente für Stickoxide in Form eines Oxides, Mischoxides, Carbonates oder Hydroxides der Erdalkalimetalle Magnesium, Calcium, Strontium und Barium sowie der Alkalimetalle Kalium und Cäsium auf einem hochoberflächigen Trägermaterial enthält. Das Speichermaterial ist dadurch gekennzeichnet, daß DOLLAR A das Trägermaterial ausgewählt ist aus der Gruppe dotiertes Ceroxid, Cer/Zirkon-Mischoxid, Calciumtitanat, Strontiumtitanat, Bariumtitanat, Bariumstannat, Bariumzirkonat, Magnesiumoxid, Lanthanoxid, Praseodymoxid, Samariumoxid, Neodymoxid, Yttriumoxid, Zirkonsilikat, Yttriumbariumcuprat, Bleititanat, Zinntitanat, Wismuttitanat, Lanthancobaltat, Lanthanmanganat und Bariumcuprat oder Mischungen davon.

Verfahren zur Herstellung von 3-Hydroxyalkanalen

Die vorliegende Erfindung betrifft die Herstellung von 3-Hydroxyalkanalen durch Umsetzung von Aldehyden der allgemeinen Formel (I) R1R2H-C-C=(O)H, in der R1 und R2 jeweils unabhängig voneinander einen aliphatischen Kohlenwasserstoffrest mit 1 bis 8 Kohlenstoffatomen bedeuten, mit Formaldehyd in der Flüssigphase in Gegenwart von Hydrotalciten und bei einer bei einer Temperatur von 80 bis 200°C.

Zusammensetzung auf der Grundlage von Zirconiumoxid und von Oxiden von Cer, Lanthan und einer anderen seltenen Erde, Verfahren zur Herstellung derselben und Verwendung derselben als Katalysator

Verfahren zur Herstellung eines Katalysators aus einem Metall der Platingruppe

Abgasreinigungskatalysator und Herstellungsverfahren dafür

Dieser Katalysator umfasst eine untere katalytische Schicht 2 mit einer katalytischen Fähigkeit, HC und CO zu oxidieren, und eine obere katalytische Schicht 3 mit einer katalytischen Fähigkeit, NOx zu reduzieren. Die untere katalytische Schicht 2 enthält Pt und Pd, die als katalytische Metalle dienen, Zeolith, ein Ce-haltiges Oxid und aktiviertes Aluminiumoxid, und die obere katalytische Schicht 3 enthält aktiviertes Aluminiumoxid, das ein Rh-dotiertes Ce-haltiges Oxid lädt, und ein NOx-Speichermaterial.

Auf Kobalt basierter Katalysator und seine Verwendung beim Fischer-Tropsch Verfahren

Verfahren zur selektiven katalytischen Hydrierung der Olefinbindung von ª‡,ª‰-ungesaettigten Ketonen mit Wasserstoff in Gegenwart eines Edelmetall-Katalysators

Verfahren zur Herstellung von Kobalt-Magnesium-Katalysatoren fuer die Umsetzung von Kohlenoxyd-Wasserstoff-Gemischen

Verfahren zur Herstellung von gemischten Oxiden auf Zirkonium-Cer-Basis

Catalyst and method of preparation

METHOD OF REFORMING A HYDROCARBON FEED

... 1313364 Reforming gasoline ENGELHARD MINERALS & CHEMICALS CORP 19 June 1970 [20 June 1969] 30006/70 Heading C5E A hydrocarbon feed containing naphthenic and paraffinic hydrocarbons is reformed by passing the hydrocarbon feed and molecular hydrogen over a catalyst comprising a platinum series metal (as hereinbefore defined) on a support having a D + L activity (as hereinbefore defined) of less than 15 (e.g. Al 2 O 3 ) which catalyst is free or essentially free of rhenium, in at least one naphthenic hydrocarbon dehydrogenation reactor to effect dehydrogenation of the naphthenic hydrocarbons to form aromatic hydrocarbons, and thereafter passing the hydrocarbon feed and molecular hydrogen over a catalyst comprising a platinum series metal (as hereinbefore defined) and rhenium on a porous, acidic oxide support (e.g. SiO 2 -Al 2 O 3 ) in at least one paraffinic hydrocarbon dehydrocyclization re- actor to effect dehydrocyclization of the paraffinic hydrocarbons to form aromatic hydrocarbons, whereby ...

Improvements in or relating to the isomerisation and/or dehydrogenation of hydrocarbons

Hydrocarbons are isomerized and/or dehydrogenated by contacting in vapour phase under reaction conditions, in the presence of hydrogen and steam, with a catalyst consisting of platinum on a support consisting of or containing a component having cracking activity, said catalyst containing less than 0.1 per cent by weight of chlorine. The isomerization of butane, pentane, decane, paraffin wax, synthetic hydrocarbon lubricating oil, ethyl benzene, and dimethyl-cyclopentane, the dehydrogenation of naphthenes to aromatics, and the conversion of C6 and C7 fractions to gasoline and aromatics are referred to. The support is preferably a clay-type catalyst, e.g. acid-treated montmorillonite, silica-alumina, silica-zirconia, silica-boria or alumina. Steam equivalent to 5 mol. per cent of the hydrocarbon feed is generally sufficient but amounts from 2-100 mol. per cent may be used. The amount of hydrogen is generally at least 1, e.g. 4-10, and may be up to 100 or more mols. per mol. of feed. Isomerization ...

Preparation of hydrogenation catalysts

... 1,146,876. Hydrogenation of hydrocarbons. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 24 Oct., 1967 [26 Oct., 1966], No. 47978/66. Heading C5E. [Also in Division B1] Hydrocarbons are hydrogenated using a catalyst prepared by mixing a Ni and/or Co salt solution with a silica sol, adding a base, separating, washing and drying the coprecipitate and heating it in a stream of H 2 or H 2 -containing gas at 150-600‹ C. Aromatics, e.g. benzene, may be hydrogenated to naphthenic compounds. The catalyst may be sulphided and is then particularly suitable for hydrogenating a diolefin to a mono-olefin, e.g. for improving the gum stability of a steam-cracked gasoline.

PROCESS FOR THE PRODUCTION OF HYDROGEN CYANIDE

... 1,269,564. Hydrogen cyanide; hydrogen. DEUTSCHE GOLDUND SILBERSCHEIDEINSTALT. 4 July, 1969 [6 July, 1968], No. 33740/69. Heading C1A. Hydrogen cyanide and hydrogen are produced by rapidly heating a mixture of acetonitrile and ammonia to a temperature of from 1100‹ to 1400‹ C. in the presence of a platinum group catalyst, and rapidly cooling the reaction products containing hydrogen cyanide and hydrogen to below 500‹ C. In an example an approximately equimolar gas stream of ammonia and acetonitrile was passed through a highly sintered alumina tube the inner walls of which had been impregnated with a mixed Pt/Al catalyst. A temperature of 1220‹ C. was maintained inside the tubes and after a contact time of 0À16 seconds the gas leaving the reaction zone was cooled to 300‹ C. Catalysts specified are platinum, ruthenium and palladium or mixtures thereof. Non-platinum group metals may also be present in amounts up to 90% of the catalyst composition; Al and Mg are specified and may be present ...

CATALYTIC COMPOSITION

... 1332986 Catalytic composition BP CHEMICALS INTERNATIONAL Ltd 29 March 1972 [15 April 1971] 9470/71 Heading C1A [Also in Division C2] A catalytic composition containing cobalt, molybdenum and oxygen is prepared by precipitation from a solution or suspension having a pH less than 7 and containing molybdic acid or a molybdate of a nitrogenous base by the addition of a cobalt salt and a buffering agent, formed from an acid and a nitrogenous base, the resulting mixture having a pH of less than 7 and drying the precipitate. The buffering agent may be formed from a nitrogenous base and acetic, citric, phthalic, hydrochloric or nitric acids and the nitrogenous base can be one of ammonia, an aliphatic, aromatic, heterocyclic or cyclo aliphatic amine or hydrazine. The cobalt salt is preferably the nitrate chloride or acetate and the heat treatment consists of a two-stage heating, with intermediate pelletizing, first at 350-650‹ C. and then at 500-650‹ C.

CATALYST AND OXIDATION PROCESS

... 1377191 Oxidation catalyst IMPERIAL CHEMICAL INDUSTRIES Ltd 2 March 1972 [17 March 1971] 7080/71 Heading B1E [Also in Division Cl] A catalyst comprises metallic cobalt or cobalt oxide or both supported on a mixed oxide material having predominantly a spinel structure and being substantially free of uncombined oxide capable of forming a spinel with cobalt oxide, i.e. containing less than 5% wt. of any divalent or a tetravalent oxide capable of forming such a spinel or less than 1% wt. of any trivalent oxide capable of forming such a spinel. Suitably both oxide components of the spinel are difficultly reducible, re alumina, magnesia, zircia, titania, zirconia or chromia. The catalyst may have a specific surface of 10-200m2/gm. The Example relates to cobalt oxide on magnesia-alumina spinel.

A process for the preparation of 1, 1, 1, 2-tetrafluoroethane

The invention relates to a process for preparing a co-precipitated Cr2O3/A12O3 catalyst promoted by zinc, said process comprising co-precipitation of chromium and aluminum metal hydroxides from corresponding trivalent metal salt solutions using NH4OH, NaOH or KOH as a base and followed by calcination to give mixed oxide precatalyst in amorphous form which is impregnated with an activity promoting amount of Zinc compound. The catalyst is used for the preparation of HFL-134a by fluorination of trichloroethylene and fluorination of the intermediate product of the former reaction (HCFC-133A).

Oxidation process

Oxidation process and catalysts for use therein

A process for removing methane or oxygen from a gas containing the same

A process for removing methane or oxygen from gases containing the same comprises adding to the gas an amount of oxygen or methane, respectively, which is sufficient to provide, together with any oxygen or methane already present, a stoichiometric excess over the impurity to be removed, and contacting the resulting gas mixture with a catalyst comprising one or more of the metals platinum, palladium, osmium, iridium, ruthenium, rhodium, or silver, to effect combustion and thereby remove the impurity. Quantitative removal of either methane or oxygen from nitrogen, argon, helium, neon, carbon dioxide, and mixtures of any of them, may be effected. The catalytic metal may be in the form of granules, pellets, or powder, may be supported on activated alumina, silica gel, silica, or diatomaceous earth, and may constitute 0,05 to 5% by weight of the total catalyst composition. Natural gas may be used as a source of methane. The reaction pressure may be atmospheric to 500 p.s.i.g., and ignition temperatures ...

A novel catalytic formulation and its preparation technical field

Catalytic materials for passive soot oxidation and methods of their manufacture

A catalytic material comprising ceria-metal oxide-alumina in a molar ratio of Ce:M:Al ions of from 75:25:100 to 25:75:100, wherein M represents zirconium or a zirconium at least partially substituted by a light lanthanide selected from the group consisting of lanthanum, praseodymium, neodymium and samarium. M may be neodymium and the catholic material may be heat-treated to more than 500°C and less than 1100°C. The catalytic material may be impregnated with 0.1-7.5% of copper by weight of the catalytic material. The catholic material may be a composite metal oxide having more than one phase, preferably a carbonate phase. The catalytic material may be formed into a catalytic composite and used as part of an exhaust gas treatment system for an internal combustion engine. The catalytic material may be manufactured by co-precipitation using potassium carbonate or cesium carbonate as the precipitating agent. The precipitate may be washed to remove potassium or cesium ions.

CATALYST PRECURSORS

Catalysts and processes using them

Oxidation of Olefins

... 1,198,930. Acrolein; methacrolein; acrylic acid; methacrylic acid. MONTECATINI EDISON S.p.A. 13 May, 1968 [16 May, 1967], No. 22503/68. Heading C2C. [Also in Division B1] Acrolein and/or acrylic acid, or methacrolein and/or methacrylic acid, is prepared by the vapour phase oxidation of propylene and/or acrolein, or of isobutylene and/or methacrolein, with oxygen in the presence of a catalyst comprising a mono-phase system based on molybdenum trioxide the crystal lattice of which has been altered by inclusion of atoms of a substituted metal Ms in an amount such that the atomic ratio of Ms to Mo is 1 to 9, the metal Ms being manganese, cobalt or nickel. The catalyst, which may be in the form either of a fixed bed or of a fluidized bed, optionally may include a small quantity of a salt or oxide of an alkali metal and/or may be supported on a carrier material, for example silica, carborundum or pumice stone. The oxidation is carried out either at atmospheric pressure or at elevated pressure ...

Selective catalytic reduction processes using doped cerias

Exhaust system for a compression ignition engine having a capture region for volatilised platinum

Hydrogenation of acetylene

Acetylene, present in a gaseous mixture containing saturated and unsaturated hydrocarbons and hydrogen, is selectively hydrogenated by passing the gas over a catalyst which comprises activated alumina containing 0.00001 to below 0.001%, preferably 0.0001% Pd. The catalyst may be regenerated in air at 350-550 DEG C. Specification 811,820 is referred to.ALSO:Acetylene, present in a gaseous mixture containing saturated and unsaturated hydrocarbons and hydrogen, is selectively hydrogenated by passing the gas over a catalyst which comprises activated alumina containing 0.00001 to below 0.001%, preferably 0.0001% Pd, at a temperature of 50 DEG C. or higher and a pressure of atmospheric or higher. Specification 811,820 is referred to.

Hydrogenation catalyst and method for producing same

Copper-containing catalysts

A catalyst, for use in carbon oxide conversion reactions, in the form of a shaped unit, e.g. cylindrical pellets, formed from an oxidic catalyst powder comprising 30-70 wt% copper oxide, zinc oxide, alumina and silica, with an Si:Al atomic ratio of 0.005-0.15:1, and a nitrogen physisorption BET surface area ≥ 105m2/g and a copper surface area > 37m2/g. The catalyst can be a methanol synthesis catalyst or water-gas shift catalyst which may contain 20-30 wt% zinc oxide with a CuO:ZnO weight ratio of 2:1 to 3.5:1. Alumina and silica can be present in an amount 5-20 wt% & 0.05-1.5 wt% respectively. The catalyst can further comprise 1-5 wt% promoter compounds e.g. Mg, Co, Mn, V, Ti, Zr or rare earths. Preferably the Si:Cu atomic ratio is 0.001-0.018:1. The method of preparation can comprise: forming a co-precipitate of copper and zinc, preferably as nitrates, with alumina, from an alumina sol e.g. colloidally dispersed boehmite, and silica e.g. from a silica sol; recovering, washing and drying ...

Heat treated fischer-tropsch catalyst particiles

Heat treated fischer-tropsch catalyst particles.

The invention provides heat treated self-supported precipitated iron-based fischer-tropsch catalyst particles. The particles of the present invention are breakage resistant and exhibit superior performance. The invention also provides a method for producing said particles and a process using said particles.

Heat treated fischer-tropsch catalyst particiles

PROCEDURE FOR THE PRODUCTION OF AN ABSTENTION OF MIXTURE METAL CATALYST AN ADDITIVE

VERFAHREN ZUR HERSTELLUNG EINES NIKELKATALYSATORS

ISOPHORONDIAMIN (IPDA, 3-AMINOMETHYL-3,5,5 TRI METHYL CYCLOHEXYL AMINE)

PROCEDURE FOR THE PRODUCTION OF FATTY ACID ALKYL STAR

ON COBALT BASED CATALYST AND ITS USE WITH THE FISCHER TROPSCH PROCEDURE

COMPOSITION ON BASIS OF ZIRCONIUM, PRASEODYMIUM, LANTHANODER NEODYMIUM OXIDE, ASSOCIATED MANUFACTURING PROCESS AND USE IN A CATALYTIC SYSTEM

CATALYST SYSTEM TO THE DISTANCE OF NITROGEN OXIDE AND PROCEDURE FOR THE DISTANCE OF NITROGEN OXIDE

CATALYST FOR LOWERING THE CARBON MONOXIDE CONTENT IN THE MAIN STREAM SMOKE OF A CIGARETTE

PROCEDURE FOR MANUFACTURING A CARRIER FOR CATALYSTS

MATERIAL TO THE STORAGE/CDELIVERY OF OXYGEN AS WELL AS AN ABSTENTION EMISSION CONTROL CATALYST THIS MATERIAL

NICKEL SILICA CATALYST, ITS PRODUCTION AND USE.

PROCEDURE FOR THE PRODUCTION NICKEL, ALUMINA AND ZIRCON DIOXIDE OF ABSTENTIONS CATALYST COMPOSITIONS.

LANTHANIDES OF CONTAINING KATALYSATORTRAEGER.

PROCEDURE FOR THE PRODUCTION OF AMINES

HYDROGENATION CATALYST.

PRODUCTION AND USE OF CARRIER CATALYSTS.

Nanoparticular metal oxide/anatase catalysts

The present invention concerns a method of preparation of nanoparticular metal oxide catalysts having a narrow particle size distribution. In particular, the invention concerns preparation of nanoparticular metal oxide catalyst precursors comprising combustible crystallization seeds upon which the catalyst metai oxide is co-precipitated with the carrier metal oxide, which crystallization seeds are removed by combustion in a final calcining step. The present invention also concerns processes wherein the nanoparticular metal oxide catalysts of the invention are used, such as SCR (deNOx) reactions of nitrogen oxides with ammonia or urea as reductant, oxidations of alcohols or aldehydes with dioxygen or air to provide aldehydes, ketones or carboxylic acids, and photocatalytic oxidation of volatile organic compounds (VOCs).

Catalyst for production of hydrogen and process for producing hydrogen using the catalyst, and catalyst for combustion of ammonia, process for producing the catalyst and process for combusting ammonia using the catalyst

Disclosed is a catalyst which can be used in the process for producing hydrogen by decomposing ammonia, can generate heat efficiently in the interior of a reactor without requiring excessive heating the reactor externally, and can decompose ammonia efficiently and steadily by utilizing the heat to produce hydrogen. Also disclosed is a technique for producing hydrogen by decomposing ammonia efficiently utilizing the catalyst. Specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising an ammonia-combusting catalytic component and an ammonia-decomposing catalytic component. Also specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising at least one metal element selected from the group consisting of cobalt, iron, nickel and molybdenum.

Fischer-tropsch synthesis catalyst, preparation and application thereof

A micro-spherical Fe-based catalyst for a slurry bed Fischer-Tropsch synthesis (FTS) comprises Fe as its active component, a transitional metal promoter M, a structure promoter S and a K promoter. The transitional metal promoter M is one or more selected from the group consisting of Mn, Cr and Zn, and the structure promoter S is SiO 2 and/or Al 2 O 3 . The weight ratio of the catalyst components is Fe: transitional metal promoter: structure promoter: K=100:1-50:1-50:0.5-10. Preparation method of the catalyst comprises: adding the structure promoter S into a mixed solution of Fe/M nitrates, then co-precipitating with ammonia water to produce a slurry, filtering and washing the slurry to produce a filter cake, adding the required amount of the K promoter and water to the filter cake, pulping and spray drying, and roasting to produce the micro-spherical Fe-based catalyst for the slurry bed Fischer-Tropsch synthesis. The catalyst has good abrasion resistance and narrow particle size distribution, furthermore, it has high conversion capability of synthesis gas, good product selectivity and high space time yield, and the catalyst also can be used for the slurry bed Fischer-Tropsch synthesis in a wide temperature range.

Catalyst and process for obtaining catalyst of high activity

The present invention relates to a process for obtaining a catalyst of high activity based on a mixture of supports, more specifically, the mixture of supports being Al 2 O 3 plus MgCl 2 , intended for the production of polyolefins. The catalyst of the present invention involves the use of a spherical support based on special alumina that serves as a porous matrix, which is impregnated, by precipitation, with magnesium chloride by dissolving the latter in ethers and/or alcohols.

Fine particles of core-shell structure and functional device incorporated therewith

Disclosed herein is fine particles of core-shell structure, each particle being composed of a core particle which is formed from a first material and has the face-centered cubic crystal structure and a shell layer which is formed from a second material differing from the first material on the surface of the core particle and has the face-centered cubic crystal structure, the fine particles containing particles which are multiply twinned fine particles and are surrounded by the {111} crystal plane.

Catalyst and method of manufacture

According to various embodiments, a catalyst composition includes a catalytic metal secured to a porous substrate. The substrate has pores that are templated. The substrate is a product of adding a substrate precursor to a water-in-oil microemulsion including a catalytic metal salt, a solvent, a templating agent, and water.

Metal oxide sterilizing catalyst, and sterilizing device and system including the same

Disclosed is a sterilizing catalyst, a sterilizing device and a sterilizing system, the sterilizing catalyst includes a metal lattice including a metal oxide, and an oxygen vacancy-inducing metal that is integrated or encompassed within the metal lattice. The metal oxide is an oxide of a divalent or multivalent metal. The oxygen vacancy-inducing metal has an oxidation number lower than that of the divalent or multivalent metal.

Hydroconversion multi-metallic catalyst and method for making thereof

In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant. In the present disclosure, the metals can be recovered in an electro-coagulation reactor, wherein portion of the metal residuals in the supernatant reacts with the electrodes to form a slurry containing insoluble metal compounds. The insoluble metal compounds are isolated and recovered, forming an effluent stream. The insoluble metal compounds and/or the effluent stream can be further treated to form at least a metal precursor feed which can be used in the co-precipitation reaction.

Hydroconversion multi-metallic catalyst and method for making thereof

In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant. In the present disclosure, the metals can be recovered via any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate an effluent stream containing less than 50 mole % of metal ions in at least one of the metal residuals, and for at least one of the metal residuals is recovered as a metal precursor feed, which can be recycled for use in the co-precipitation reaction. An effluent stream from the process to waste treatment contains less than 50 ppm metal ions.

Hydroconversion multi-metallic catalyst and method for making thereof

In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds end up in the supernatant. The metals can be recovered via any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate an effluent stream containing less than 50 mole % of metal ions in at least one of the metal residuals, and for at least one of the metal residuals recovered as a metal precursor feed for use in the co-precipitation reaction. In one embodiment, the resin functions as an anion exchange resin with an acidic supernatant to recover Group VIB metal residuals, and a cation exchange resin with a basic supernatant to recover Promoter metal residuals. An effluent stream from the process to waste treatment contains less than 50 ppm metals.

Photocatalytic Nanocomposite Material

The present invention relates to a photocatalytic nanocomposite material, wherein the realization of the optimal wavelength for optical activation is controlled and accordingly is designed to work together with a LED operating at the wavelength for yielding the maximum efficiency.

Alumina catalyst support

The present invention is directed to a high surface area, high pore volume porous alumina, comprising: aluminum oxide, optionally, silicon oxide and aluminosilicates, and optionally one or more dopants, said alumina having a specific surface area of from about 100 to about 500 square meters per gram and a total pore volume after calcination at 900° C. for 2 hours of greater than or equal to 1.2 cubic centimeters per gram, wherein less than or equal to 15% of the total pore volume is contributed by pores having a diameter of less than 10 nm.

Exhaust gas-purifying catalyst

An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more rare-earth elements other than cerium and/or compounds thereof interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles, wherein a spectrum of a characteristic X-ray intensity for one of the rare-earth element(s) and a spectrum of a characteristic X-ray intensity for one of the precious metal element(s) that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient of 0.68 or more.

Porous inorganic composite oxide

A porous inorganic composite oxide containing oxides of aluminum and of cerium and/or zirconium, and, optionally, oxides of one or more dopants selected from transition metals, rare earths, and mixtures thereof, and having a specific surface area, in m 2 /g, after calcining at 1100° C. for 5 hours, of ≧0.8235[Al]+11.157 and a total pore volume, in cm 3 /g, after calcining at 900° C. for 2 hours, of ≧0.0097[Al]+0.0647, wherein [Al] is the amount of oxides of aluminum, expressed as pbw Al 2 O 3 per 100 pbw of the composite oxide; a catalyst containing one or more noble metals dispersed on the porous inorganic composite oxide; and a method for making the porous inorganic composite oxide.

Process for producing hydrogenolysis products of polyhydric alcohols

The present invention relates to a process for producing hydrogenolysis products of polyhydric alcohols with a good selectivity and a high yield, as well as hydrogenolysis catalysts used in the production process. The present invention provides (1) a process for producing a hydrogenolysis product of a polyhydric alcohol which includes the step of reacting the polyhydric alcohol with hydrogen in the presence of a catalyst containing a copper component, wherein the catalyst is a catalyst (A) containing the copper component, an iron component and an aluminum component, or a catalyst (B) containing the copper component and a silicon component; and (2) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component, an iron component and an aluminum component, and (3) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component and a silicon component.

Mixed metal oxide catalyst for decomposition of nitrogen oxides

The present invention relates to a mixed metal oxide catalyst in which a hydrotalcite precursor containing an alkali metal is impregnated or intercalated with a nonprecious metal, a method of manufacturing the same, and a method of decomposing nitrogen oxide using the mixed metal oxide catalyst. The mixed metal oxide catalyst has excellent catalytic activity because it can decompose NO x , N 2 O or a mixture thereof even at low temperature, and is economical because it does not use a precious metal.

Methanation Reaction Methods Utilizing Enhanced Catalyst Formulations and Methods of Preparing Enhanced Methanation Catalysts

Enhanced mixed metal catalysts are provided which allow high conversions of carbon dioxide to methane, in some cases up to about 100% conversion. Methods of preparing enhanced mixed metal catalysts comprise a series of steps involving combining nickel and chromium salts with a nucleation promoter in a base environment to form a gel, allowing the gel to digest to form a solid and a mother liquor, isolating the solid, washing the solid, drying the solid, and thermally treating the solid to form a nickel-chromium catalyst. Methanation processes using the catalysts are also provided. The enhanced mixed metal catalysts provide more efficient conversion and lower operating temperatures for carbon dioxide methanation when compared to conventional methanation catalysts. Additionally, these enhanced catalyst formulations allow realization of higher value product from captured carbon dioxide.

Hydrated Niobium Oxide Nanoparticle Containing Catalysts for Olefin Hydration

An olefin hydration catalyst and method for producing same is provided. The olefin hydration catalyst can be prepared by contacting a niobium containing compound with a strong Bronsted acid, such as sulfuric or phosphoric acid, to produce niobium oxo sulfate or niobium oxo phosphate nanoparticles. The nanoparticles can be separated, dried and utilized in a reactor for the hydration of olefins to their corresponding alcohols.

Production of lower olefins from synthesis gas

Disclosed is a process for the production of lower olefins by the conversion of a feed stream comprising carbon monoxide and hydrogen, and catalysts as used therein, such as a Fischer-Tropsch process. By virtue of the invention, lower olefins can be formed from synthesis gas, with high selectivity, and low production of methane. The catalysts used herein comprise an α-alumina support, and a catalytically active component that comprises iron-containing particles dispersed onto the support in at least 1 wt. %. The majority of the iron-containing particles is in direct contact with the α-alumina and is well-distributed thereon. Preferably, the iron-containing particles have an average particle size below 30 nm, and most preferably below 10 nm. The supported catalysts not only show a high selectivity, but also a high catalyst activity and chemical and mechanical stability.

Sulfur containing silica particle

A silica-containing composition is disclosed. The composition comprises a compound having the following formula: (SiO 2 ) x (OH) y M z O a F.B: wherein M is at least one of the following: boron, magnesium, aluminum, calcium, titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, palladium, silver, cadmium, tin, platinum, gold, and bismuth; wherein F optionally exists and comprises at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane at a surface area coverage of about 0.01 to about 100%. The molar ratio of y/x is equal to about 0.01 to about 0.5, the molar ratio of x/z is equal to about 0.5 to about 300, and the molar ratio of a/z is dependent on the nature of the metal oxide. B comprises a hygroscopic solid and preferably comprises at least one alkaline earth oxide, lanthanide oxide, or combinations thereof.

Method for producing nanoparticles

A method for producing nanoparticles includes: producing a nanoparticle dispersion ion gel in which a plurality of nanoparticles are dispersed; and dissolving the nanoparticle dispersion ion gel, thereby producing a liquid in which the plurality of nanoparticles are dispersed.

Complex oxide, method for producing same, and exhaust gas purifying catalyst

Disclosed are a composite oxide which is capable of maintaining a large volume of pores even used in a high temperature environment, and which has excellent heat resistance and catalytic activity, as well as a method for producing the composite oxide and a catalyst for exhaust gas purification employing the composite oxide. The composite oxide contains cerium and at least one element selected from aluminum, silicon, or rare earth metals other than cerium and including yttrium, at a mass ratio of 85:15 to 99:1 in terms oxides, and has a property of exhibiting a not less than 0.30 cm 3 /g, preferably not less than 0.40 cm 3 /g volume of pores with a diameter of not larger than 200 nm, after calcination at 900° C. for 5 hours, and is suitable for a co-catalyst in a catalyst for vehicle exhaust gas purification.

Hydrothermal hydrocatalytic treatment of biomass

A method of hydrothermal hydrocatalytic treating biomass is provided. Lignocellulosic biomass is treated with a digestive solvent to form a pretreated biomass containing soluble carbohydrates. The pretreated biomass is contacted, with hydrogen at a temperature in the range of 150° C. to less than 300° C. in the presence of a pH buffering agent and a supported hydrogenolysis catalyst containing (a) sulfur, (b) Mo or W, and (c) Co, Ni or mixture thereof, incorporated into a suitable support, to form a plurality of oxygenated hydrocarbons.

Spinel structured catalyst for aldehyde production

The present invention refers to a catalyst for aldehyde production, in particular formaldehyde or acetaldehyde production, through selective oxidation of alkanol, especially methanol or ethanol, with oxygen, said catalyst having a spinel structure. The catalyst typically comprises a Fe a q +V b+ Mo c+ y +Δ z O 4 spinel structure wherein Δ is an optional cation vacancy and wherein wherein z=3−q−x−y and q×a+x×b+y×c=8 in concentrations corresponding to 0.6<q<3, 0<x<1.5, 0<y<1 and 0<z<1.3 and 2<a<3, 3<b<5 and 3<c<6. The present invention further refers to a process for producing said catalyst and to the use of said catalyst for selective oxidation of alkanol, preferably methanol or ethanol, with oxygen to aldehyde, preferably formaldehyde or acetaldehyde.

Catalyst for glycerin dehydration, and process for producing acrolein, process for producing acrylic acid, and process for producing hydrophilic resin each using the catalyst

A catalyst for glycerin dehydration of the present invention comprises boron phosphate or a rare-earth metal phosphate, wherein a molar ratio P/B of phosphorus (P) to boron (B) or a molar ratio P/R of phosphorus (P) to a rare-earth metal (R) is more than 1.0 and 2.0 or less. An another catalyst for glycerin dehydration of the present invention comprises a combination of boron phosphate and a metal element or a combination of a rare-earth metal phosphate and a metal element other than a rare-earth metal, wherein a molar ratio M/(P+B) of a metal element (M) to phosphorus (P) and boron (B) or a molar ratio M/(P+R) of a metal element (M) to phosphorus (P) and a rare-earth metal (R) is more than 0.00005 and 0.5 or less.

Composition containing oxides of zirconium, cerium and another rare earth having reduced maximum reducibility temperature, a process for preparation and use thereof in the field of catalysis

A composition is described that includes oxides of zirconium, cerium and another rare earth different from cerium, having a cerium oxide content not exceeding 50 wt % and, after calcination at 1000° C. for 6 hours, a maximal reducibility temperature not exceeding 500° C. and a specific surface of at least 45 m 2 /g. The composition can be prepared according to a method that includes continuously reacting a mixture that includes compounds of zirconium, cerium and another rare earth having a basic compound for a residence time not exceeding 100 milliseconds, wherein the precipitate is heated and contacted with a surfactant before calcination.

Nickel-based reforming catalyst

The present invention relates unique pore structures in nickel supported on alumina with the negligible formation of macropores. Incorporation of additional elements stabilizes the pore structure of the nickel supported on alumina. Additional element(s) were then further added into the nickel-supported materials. These additional element(s) further stabilize the pore structures under heating conditions. The improvements of pore structure stability under heating conditions and negligible presence of macropores limit the sintering of nickel metal to a mechanism of impeded diffusion. The negligible presence of macropores also limits the deposition of alkali metal hydroxide(s)/carbonate(s) to the outer shell of the catalyst pellet. Both of the negligible presence of macropores and improvement in pore structure stability allow for prolonging the catalyst life of these nickel supported on alumina catalysts of the present invention for reforming hydrocarbons.

Novel formulation of hexa-aluminates for reforming fuels

The invention is directed to a catalyst and a method for making a reforming catalyst for the production of hydrogen from organic compounds that overcomes the problems of catalyst poisoning and deactivation by coking and high temperature sintering, yet provides excellent durability and a long working life in process use. An embodiment is the formation of a unique four-metal ion hexa-aluminate of the formula M1 a M2 b M3 c M4 d Al 11 O 19-α . M1 and M2 are selected from the group consisting of beryllium, magnesium, calcium, strontium, barium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, and gadolinium. M3 and M4 are selected from the group consisting of chromium, manganese, iron, cobalt, nickel, copper, molybdenum, ruthenium, rhodium, palladium, tungsten, rhenium, osmium, iridium, platinum, wherein 0.010≦a+b+c+d≦2.0. Also, 1≦α≦1. Further, M1≠M2 and M3≠M4.

Porous polymer supported polyoxometalates

A composition for the destruction of chemical warfare agents and toxic industrial chemicals having a polyoxometalate (POM) attached to an amine, carboxylic acid, or ammonium substituted porous polymer. Also disclosed is a method for attaching a POM to an amine, carboxylic acid, or ammonium substituted porous polymer by (1) dissolving the POM in water or an organic solvent, adding the functionalized porous polymer, whereby the POM ionically attaches to the amine, carboxylic acid or ammonium group, or (2) heating the POM and functionalized polymer in the presence of a dehydrating agent whereby an imide bond is produced between the POM and the functionality on the porous polymer.

Nanostructured metal oxides and mixed metal oxides, methods of making these nanoparticles, and methods of their use

Embodiments of the present disclosure provide for nanoparticles, methods of making nanoparticles, methods of using the nanoparticles, and the like. Nanoparticles of the present disclosure can have a variety of morphologies, which may lead to their use in a variety of technologies and processes. Nanoparticles of the present may be used in sensors, optics, mechanics, circuits, and the like. In addition, nanoparticles of the present disclosure may be used in catalytic reactions, for CO oxidation, as super-capacitors, in hydrogen storage, and the like.

Method for producing catalyst composition, catalyst composition, diesel particulate filter using the same, and exhaust gas purification system

Provided is a catalyst having the ability to combust PM at relatively low temperatures and having high HC and CO removal (conversion) efficiency even at the above operating temperature. In the catalyst composition, at least one kind of platinum group element selected from Pt, Rh, and Pd is dispersed in and supported by a platinum group-supporting carrier containing at least one kind of element selected from Zr, Al, Y, Si, Bi, Pr, and Tb, and the platinum group-supporting carrier is supported on the surface of a Ce oxide containing Ce as an essential component. The catalyst composition has both PM combustion activity and gas purification activity.

Method for MN3O4 nanoparticles by solid-state decomposition of exfoliated MNO2 nanosheet

A method of preparing one-dimensional trimanganese tetroxide (Mn 3 O 4 ) nanoparticles from an exfoliated two-dimensional manganese dioxide (MnO 2 ) nanosheet using a solid-state decomposition method, and Mn 3 O 4 nanoparticles prepared according to the method are provided. The Mn 3 O 4 nanoparticles can be prepared at a very low temperature without using an organic solvent or a chemical additive, compared to conventional synthesis methods.

Nanoporous photocatalyst having high specific surface area and high crystallinity and method for preparing the same

Disclosed is a nanoporous photocatalyst having a high specific surface area and high crystallinity and a method for preparing the same, capable of preparing nanoporous photocatalysts, which satisfy both of the high specific surface area of 350 m 2 /g to 650 m 2 /g and high crystallinity through a simple synthetic scheme, in mass production at a low price. The nanoporous catalyst having a high specific area and high crystallinity includes a plurality of nanopores having an average diameter of about 1 nm to about 3 nm. A micro-framework of the nanoporous photocatalyst has a single crystalline phase of anatase or a bicrystalline phase of anatase and brookite, and a specific surface area of the nanoporous photocatalyst is in a range of about 350 m 2 /g to 650 m 2 /g.

Mixed oxide based catalyst for the conversion of carbon dioxide to syngas and method of preparation and use

The invention relates to a catalyst and process for making syngas mixtures including hydrogen, carbon monoxide and carbon dioxide. The process comprises contacting a gaseous feed mixture containing carbon dioxide and hydrogen with the catalyst, where the catalyst comprises Mn oxide and an auxiliary metal oxide selected from the group consisting of La, Ca, K, W, Cu, Al and mixtures or combinations thereof. The process enables hydrogenation of carbon dioxide into carbon monoxide with high selectivity, and good catalyst stability over time and under variations in processing conditions. The process can be applied separately, but can also be integrated with other processes, both up-stream and/or down-stream including methane reforming or other synthesis processes for making products like alkanes, aldehydes, or alcohols.

Exhaust gas purifying catalyst and production method thereof

An object is to maintain an effect of enhancing activity of noble metal particles by transition metal without increasing production cost and an environmental load. An exhaust gas purifying catalyst 1 is composed of: noble metal particles 2 ; first compounds 3 which contact the noble metal particles 2 and suppress movement of the noble metal particles 2 ; and second compounds 4 which contain the noble metal particles 2 and the first compounds 3 , suppress the movement of the noble metal particles 2 , and suppress coagulation of the first compounds 3 following mutual contact of the first compounds 3 , wherein the first compounds 3 support the noble metal particles 2 , and simplexes or aggregates of the first compounds 3 supporting the noble metal particles 2 are included in section partitioned by the second compounds 4.

Organic templated nanometal oxyhydroxide

Disclosed are granular composites comprising a biopolymer and one or more nanometal-oxyhydroxide/hydroxide/oxide particles, along with methods for the preparation and use thereof.

Catalyst for producing unsaturated aldehyde and/or unsaturated carboxylic acid, and process for producing unsaturated aldehyde and/or unsaturated carboxylic acid using the catalyst

Provided is a catalyst for production of unsaturated aldehyde and/or unsaturated carboxylic acid, which shows excellent mechanical strength and low attrition loss and is capable of producing the object product(s) at a high yield. The catalyst comprises a catalytically active component containing molybdenum, bismuth and iron as the essential ingredients, and inorganic fibers, and is characterized in that the inorganic fibers contain at least an inorganic fiber having an average diameter of at least 8 μm and another inorganic fiber having an average diameter not more than 6 μm.

Biocidal iron oxide coating, methods of making, and methods of use

Embodiments of the present disclosure include visible light antimicrobial materials comprising α-Fe 2 O 3 nanostructures fabricated by electron beam evaporation, methods of making the antimicrobial materials, and methods of using the antimicrobial materials.

Ce-BASED COMPOSITE OXIDE CATALYST, PREPARATION METHOD AND APPLICATION THEREOF

Disclosed is a Ce-based composite oxide catalyst for selective catalytic reducing nitrogen oxides with ammonia, which comprises Ce oxide and at least one oxide of transition metal except Ce. The Ce-based composite oxide catalyst is prepared by a simple method which uses non-toxic and harmless raw materials, and it has the following advantages: high catalytic activity, and excellent selectivity for generating nitrogen etc. The catalyst can be applied in catalytic cleaning plant for nitrogen oxides from mobile and stationary sources.

PROCESS FOR PREPARING OLEFINS FROM SYNTHESIS GAS USING A COBALT AND MANGANESE CONTAINING CATALYST

The invention relates to a process for preparing olefins from synthesis gas, wherein the synthesis gas is contacted with a catalyst which contains cobalt, manganese and a third element selected from the group consisting of aluminium, gallium, indium, thallium, tin, lead and bismuth. Further, the invention relates to a process for preparing such catalyst, and to the catalyst so obtained. 1. Process for preparing olefins from synthesis gas , wherein the synthesis gas is contacted with a catalyst which contains cobalt , manganese and a third element selected from the group consisting of aluminium , gallium , indium , thallium , tin , lead and bismuth.2. Process according to claim 1 , wherein the catalyst contains cobalt claim 1 , manganese and tin.3. Process according to claim 1 , wherein the catalyst is pre-reduced at a temperature within the range of from 400 to 500° C.4. Process for preparing a supported catalyst claim 1 , wherein the catalyst contains cobalt claim 1 , manganese and a third element selected from the group consisting of aluminium claim 1 , gallium claim 1 , indium claim 1 , thallium claim 1 , tin claim 1 , lead and bismuth claim 1 , and is prepared by co-precipitation of a manganese salt and a cobalt salt on a support claim 1 , followed by impregnation with a salt of the third element.5. Process according to claim 4 , wherein the catalyst contains cobalt claim 4 , manganese and tin.6. Catalyst obtainable by the process of .7. Catalyst which contains cobalt claim 4 , manganese and a third element selected from the group consisting of aluminium claim 4 , gallium claim 4 , indium claim 4 , thallium claim 4 , tin claim 4 , lead and bismuth.8. Catalyst according to claim 7 , which contains cobalt claim 7 , manganese and tin.9. Catalyst according to claim 6 , wherein the catalyst contains cobalt claim 6 , manganese and tin. The present invention relates to a process for preparing olefins from synthesis gas (syngas) using a catalyst which contains cobalt ...

Catalyst And Method For The Direct Synthesis Of Dimethyl Ether From Synthesis Gas

Catalysts and methods for their manufacture and use for the synthesis of dimethyl ether from syngas are disclosed. The catalysts comprise ZnO, CuO, ZrO 2 , alumina and one or more of boron oxide, tantalum oxide, phosphorus oxide and niobium oxide. The catalysts may also comprise ceria. The catalysts described herein are able to synthesize dimethyl ether directly from synthesis gas, including synthesis gas that is rich in carbon monoxide.

Compositions containing fluorine substituted olefins and methods and systems using same

Disclosed are the use of fluorine substituted olefins, including tetra- and penta-fluoropropenes, in a variety of applications, including in methods of depositing catalyst on a solid support, methods of sterilizing articles, cleaning methods and compositions, methods of applying medicaments, fire extinguishing/suppression compositions and methods, flavor formulations, fragrance formulations and inflating agents.

Photocatalyst coated body and photocatalyst coating liquid

A photocatalyst coated body includes a base and a photocatalyst layer provided on the base. The photocatalyst coated body is characterized in that photocatalyst layer contains 1-20 (inclusive) parts by mass of photocatalyst particles, 30-98 (inclusive) parts by mass of silica particles and 1-50 (inclusive) parts by mass of zirconia particles, so that the total all of these particles is 100 parts by mass. The photocatalyst coated body is also characterized in that the zirconia particles are at least one kind of particles selected from the group consisting of crystalline zirconia particles having an average crystallite diameter of 10 nm or less and amorphous zirconia particles. Such photocatalyst coated body has excellent photocatalytic degradation function and excellent weather resistance; and also it is capable of suppressing the formation of intermediate products such as NO 2 , while increasing the amount of NO x removed during removal of NO x in the air.

Semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, and preparation and use thereof

Disclosed are a semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, and preparation and use thereof. The semiconductor photocatalyst has the atomic composition ratio of M˜N-Ax; wherein M˜N are IIB group elements to VIA group elements, or IIIA group elements to VA group elements, A being one element or more than two elements selected from the group consisting of cobalt, nickel, iron, copper, chromium, palladium, platinum, ruthenium, rhodium, iridium and silver; and 0.02%≦x≦1.0%. The method of in-situ preparation of the highly effective semiconductor photocatalyst and catalytically reforming biomass derivatives for hydrogen generation by driving photoreaction with visible light via quantum dots is simple, fast, highly effective, inexpensive and practical. The in situ reaction can occur in sunlight without the need of harsh conditions such as calcination.

Production method for exhaust gas-purifying catalyst and motor vehicle

A method for producing an exhaust gas purifying catalyst according to the present invention includes step (a) of preparing a metal oxide support containing zirconium; step (b) of preparing a solution containing rhodium; and step (c) of adding the metal oxide support prepared in the step (a), and ammonium carbonate, ammonium hydrogencarbonate or ammonia water, to the solution prepared in the step (b) to obtain the solution having a pH adjusted to a range of 3.0 or higher and 7.5 or lower. The present invention provides a method capable of producing an exhaust gas purifying catalyst including a metal oxide support containing zirconium and rhodium of a minute particle size which is supported on the metal oxide support at a high degree of dispersion.

Single reaction synthesis of texturized catalysts

Methods are described for making a texturized catalyst. The textural promoter may be a high-surface area, high-porosity, stable metal oxide support. The catalyst is manufactured by reacting catalyst precursor materials and support materials in a single, solvent deficient reaction to form a catalyst. The catalyst may be particles or a coating or partial coating of a support surface.

Catalysts For The Conversion Of Hydroxypropionic Acid Or Its Derivatives To Acrylic Acid Or Its Derivatives

Catalysts for dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity, short residence time, and without significant conversion to undesired side products, such as, for example, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed condensed phosphates. Methods of preparing the catalysts are also provided.

Catalyst support materials with oxygen storage capacity (osc) and method of making thereof

A new type of catalyst support with oxygen storage capacity (OSC) and methods of making the same are disclosed. The composition ratio is x(Ce 1-w Zr w 0 2 ):yM:zL:(1-x-y-z)AI 2 0 3 , where Ce 1-w Zr w 0 2 is the oxygen storage composition with stabilizer Zr0 2 , molar ratio (w) in the range of 0 to about 0.8, and a weight ratio (x) of about 0.05 to about 0.8; M is an interactive promoter for oxygen storage capacity with a weight ratio (y) of 0 to about 0.10; and L is a stabilizer for the support Al 2 0 3 with weight ratio (z) of from 0 to about 0.10. In some cases, M or L can act as both OSC promoter and thermal stabilizer. The weight percentage range of ceria-zirconia and other metal and rare earth oxides (x+y+z) is from about 5 to about 80% relative to total oxides. Combining platinum group metals (PGM) and adhesive with the catalyst supports, a new wash coat made therefrom is provided that comprises a mixture of catalyst support materials according to the relationship (a)RE-Ce—Zr0 2 +(3)CZMLA+(1-a-β)RE-AI 2 0 3 , where RE-Ce—Zr0 2 is a commercial OSC material of rare earth elements stabilized ceria zirconia having a weight ratio (a) ranging from 0 to about 0.7; CZMLA is the catalyst support material of the present disclosure having a weight ratio (β) ranging from about 0.2 to about 1 such that (α+β)<1; and RE-AI 2 0 3 is rare earth element stabilized alumina having a weight ratio equal to (1-α-β). The new wash coat made therefrom exhibits a lower activation temperature compared with traditional formulation of wash coat by at least 50° C. The new wash coat made therefrom also requires less RE-Ce—Zr0 2 oxide and/or less PGM in the formulation of emission control catalyst for gasoline and diesel engines.

Catalytic Conversion Of Lactic Acid To Acrylic Acid

Disclosed herein is the catalytic dehydration of lactic acid to acrylic acid, which is characterized by a high conversion of lactic acid, a high selectivity for acrylic acid, a high yield of acrylic acid, and correspondingly low selectivity and molar yields for undesired by-products. This is achieved with a particular class of catalysts defined by a mixture of metal-containing phosphate salts that together provide the catalyst with a very high basicity density and low acidity density. Further, the catalyst is believed to be stable and active for lengthy periods heretofore unseen in the art for such dehydration processes.

CARRIER FOR NOx REDUCTION CATALYST

A NOx reduction catalyst carrier yields a NOx reduction catalyst with an improved permissible dose of poisoning substances such as arsenic. More specifically, the present invention relates to a NOx reduction catalyst carrier comprising TiO 2 , having a honeycomb structure and having a specific surface area greater than 100 m 2 /g.

Catalyst for the epoxidation of alkenes

The present invention relates to a catalyst for preparing alkylene oxides, which is a supported silver catalyst having a novel promoter combination. The present invention further relates to a process for producing the catalyst and the use of the catalyst for the oxidation of alkylenes to alkylene oxides. In addition, the present invention relates to a process for preparing ethylene oxide from ethylene, which comprises the oxidation of ethylene in the presence of the stated catalyst.

Conversion of ethanol to a reaction product comprising 1-butanol using hydroxyapatite catalysts

Catalytic processes to produce a reaction product comprising 1-butanol by contacting a reactant comprising ethanol with a catalyst composition under suitable reaction conditions are provided. The catalyst composition may comprise a hydroxyapatite of the Formula (M w M′ x M″ y M′″ z ) 5 (PO 4 ) 3 (OH), wherein M is Mg; M′ is Ca; M″ is Sr; M′″ is Ba; w is any number between 0 and 1 inclusive; x is any number from 0 to less than 0.5; y is any number between 0 and 1 inclusive; z is any number between 0 and 1 inclusive; and w+x+y+z=1. Base-treated catalyst compositions may be used. Also provided are processes for contacting an initial catalyst composition comprising the hydroxyapatite with a base to produce a base-treated catalyst composition, and the base-treated catalyst compositions so obtained.

Catalyst for the hydrogenation of unsaturated hydrocarbons and process for its preparation

The present invention relates to a catalyst for the hydrogenation of unsaturated hydrocarbons, in particular aromatics with a broad molecular weight range, a process for the production thereof and a process for hydrogenating unsaturated hydrocarbons.

Processes for preparing amines and catalysts for use therein

Processes for preparing an amine are described which comprise reacting a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group of ammonia, primary and secondary amines, in the presence of a zirconium dioxide-, copper- and nickel-containing catalyst. The catalytically active composition of the catalyst, before its reduction with hydrogen, comprises oxygen compounds of zirconium, of copper, of nickel, in the range from 1.0 to 5.0% by weight of oxygen compounds of cobalt, calculated as CoO, and in the range from 0.2 to 5.0% by weight of oxygen compounds of sulfur, of phosphorus, of gallium, of lead and/or of antimony, calculated in each case as H2SO4, H3PO4, Ga203, PbO and Sb203 respectively.

Nickel-M-Alumina Xerogel Catalyst, Method for Preparing the Same, and Method for Preparing Methane Using the Catalyst

A nickel-M-alumina hybrid xerogel catalyst for preparing methane, wherein the metal M is at least one element selected from the group consisting of Fe, Co, Ni, Ce, La, Mo, Cs, Y, and Mg, a method for preparing the catalyst and a method for preparing methane using the catalyst are provided. The catalyst has strong resistance against a high-temperature sintering reaction and deposition of carbon species, and can effectively improve a conversion ratio of carbon monoxide and selectivity to methane.

Manganese Oxides and Their Use in the Oxidation of Alkanes

Catalytic structures are provided comprising octahedral tunnel lattice manganese oxides ion-exchanged with metal cations or mixtures thereof. The structures are useful as catalysts for the oxidation of alkanes and may be prepared by treating layered manganese oxide under highly acidic conditions, optionally drying the treated product, and subjecting it to ion exchange.

Process for preparing olefins from synthesis gas using a cobalt and manganese containing catalyst

The invention relates to a process for preparing a supported catalyst, wherein the catalyst contains cobalt, manganese and a third element selected from the group consisting of aluminium, gallium, indium, thallium, tin, lead and bismuth, and is prepared by co-precipitation of a manganese salt and a cobalt salt on a support, followed by impregnation with a salt of the third element. Further, the invention relates to the catalyst so obtained.

Nickel catalysts for reforming hydrocarbons

A catalyst for reforming hydrocarbons may include a catalytically active amount of nickel or nickel oxide dispersed on a metal oxide support. The metal oxide support may be of a single-metal oxide of a first metal or a complex-metal oxide of the first metal and a second metal. A co-catalyst of magnesium oxide (MgO) may anchor the nickel or nickel oxide onto the metal oxide support.

Sinter resistant catalytic material and process of producing the same

A catalytic material including particles formed of a catalytic core material having a thermally resistant porous shell coated over the catalytic core material. An oxygen storage material is dispersed within the thermally resistant porous shell. In an example, the oxygen storage material is ceria. The catalytic material can further include a catalytic support, wherein the particles are deposited on the catalytic support. The catalytic support can be a powdered oxide including a material selected from the group consisting of alumina, silica, zirconia, niobia, ceria, titania, and combinations thereof. The catalytic core can include an element selected from the group consisting of Pt, Pd, Rh, Co, Ni, Mn, Cu, Fe, Au, Ag, and combinations thereof. The porous shell can be selected from materials consisting of alumina, baria, ceria, magnesia, niobia, silica, titania, yttria, and combinations thereof.

Catalyst for hydrogenation reaction and method for producing same

The present invention can facilitate the reduction of nickel by using copper as an accelerator when a hydrogenation catalyst including nickel is produced by using a deposition-precipitation (DP) method. According to an embodiment of the present invention, provided is a catalyst for a hydrogenation reaction that includes 40-80 parts by weight of nickel as a catalyst active component, 0.01-5 parts by weight of copper as an accelerator, and 10-30 parts by weight of a silica support based on 100 parts by weight of the entire catalyst. Therefore, although a high content of nickel is supported, the catalyst has a small crystal size of an activated metal and a high degree of dispersion and provides excellent hydrogenation activity. In addition, silica with a controlled particle size distribution is used as a support, so that the produced catalyst also has a uniform particle size distribution and is suppressed from being smashed at a high-speed rotation in the hydrogenation reaction, thereby providing a high filtration rate.

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).

METHOD FOR MAKING CATALYST FOR OZONE DECOMPOSITION

A method for making a catalyst for ozone decomposition includes: adding a reducing agent into a water solution of a permanganate salt to obtain a first reaction liquid, and heating the first reaction liquid under continuous stirring to form a birnessite-type manganese dioxide; and adding the birnessite-type manganese dioxide into a water solution of an ammonium salt to obtain a second reaction liquid, and heating the second reaction liquid under continuous stirring to form the catalyst. 1. A method for making a catalyst for ozone decomposition , the method comprising:adding a reducing agent into a water solution of a permanganate salt to obtain a first reaction liquid, and heating the first reaction liquid under continuous stirring to form a birnessite-type manganese dioxide; andadding the birnessite-type manganese dioxide into a water solution of an ammonium salt to obtain a second reaction liquid, and heating the second reaction liquid under continuous stirring to form the catalyst.2. The method of claim 1 , wherein the ammonium salt is selected from the group consisting of ammonium sulfate claim 1 , ammonium chloride claim 1 , ammonium nitrate claim 1 , ammonium carbonate claim 1 , ammonium bicarbonate claim 1 , and any combination thereof.3. The method of claim 1 , wherein a concentration of the ammonium salt in the water solution of the ammonium salt is about 5 g/L to about 400 g/L.4. The method of claim 1 , wherein a heating temperature of the first reaction liquid is about 25° C. to about 90° C.5. The method of claim 1 , wherein the permanganate salt is selected from the group consisting of potassium permanganate claim 1 , sodium permanganate claim 1 , ammonium permanganate claim 1 , and any combination thereof.6. The method of claim 1 , wherein a concentration of the permanganate salt in the water solution of the ammonium salt is about 0.1 g/L to about 100 g/L.7. The method of claim 1 , wherein a mass ratio of the reducing agent to the permanganate is about ...

METHOD OF SYNTHESIS OF NANO-SIZED BETA ZEOLITES CONTAINING MESOPORES AND USES THEREOF

A method for hydrocracking a hydrocarbon feedstock, the method comprising: contacting the hydrocarbon feedstock with a catalyst containing a nano-sized mesoporous zeolite composition under reaction conditions to produce a product stream containing at least 20 weight percent of hydrocarbons with 1-4 carbon atoms, wherein the nano-sized mesoporous zeolite composition is produced by a method that includes: mixing silica, a source of aluminum, and tetraethylammonium hydroxide to form an aluminosilicate fluid gel; drying the aluminosilicate fluid gel to form a dried gel mixture; subjecting the dried gel mixture to hydrothermal treatment to produce a zeolite precursor; adding cetyltrimethylammonium bromide (CTAB) to the zeolite precursor to form a templated mixture; subjecting the templated mixture to hydrothermal treatment to prepare a CTAB-templated zeolite; washing the CTAB-templated zeolite with distilled water; separating the CTAB-templated zeolite by centrifugation; and drying and calcining the CTAB-templated zeolites to produce a nano-sized mesoporous zeolite composition. 1. A method for hydrocracking a hydrocarbon feedstock , the method comprising: mixing silica, a source of aluminum, and tetraethylammonium hydroxide to form an aluminosilicate fluid gel;', 'drying the aluminosilicate fluid gel to form a dried gel mixture;', 'subjecting the dried gel mixture to hydrothermal treatment to produce a zeolite precursor;', 'adding cetyltrimethylammonium bromide (CTAB) to the zeolite precursor to form a templated mixture;', 'subjecting the templated mixture to hydrothermal treatment to prepare a CTAB-templated zeolite;', 'washing the CTAB-templated zeolite with distilled water;', 'separating the CTAB-templated zeolite by centrifugation; and', 'drying and calcining the CTAB-templated zeolites to produce a nano-sized mesoporous zeolite composition., 'contacting the hydrocarbon feedstock with a catalyst containing a nano-sized mesoporous zeolite composition under reaction ...

CATALYST FOR LOW TEMPERATURE SLURRY BED FISCHER-TROPSCH SYNTHESIS

A method for controllably producing a hematite-containing Fischer-Tropsch catalyst by combining an iron nitrate solution with a precipitating agent solution at a precipitating temperature and over a precipitation time to form a precipitate comprising iron phases; holding the precipitate from at a hold temperature for a hold time to provide a hematite containing precipitate; and washing the hematite containing precipitate via contact with a wash solution and filtering, to provide a washed hematite containing catalyst. The method may further comprise promoting the washed hematite containing catalyst with a chemical promoter; spray drying the promoted hematite containing catalyst; and calcining the spray dried hematite containing catalyst to provide a calcined hematite-containing Fischer-Tropsch catalyst. 1. A method for controllably producing a hematite-containing Fischer-Tropsch catalyst , the method comprising:(a) combining an iron nitrate solution with a precipitating agent solution at a precipitating temperature and over a precipitation time to form a precipitate comprising iron phases, wherein the precipitating temperature is less than or equal to about 95° C.; wherein the iron nitrate, the precipitating agent solution, or both, comprise a refractory material;(b) holding the precipitate from (a) at a hold temperature for a hold time to provide a hematite containing precipitate; and(c) washing the hematite containing precipitate from (b) via contact with a wash solution and filtering, to provide a washed hematite containing Fischer-Tropsch catalyst.2. The method of further comprising adding a hematite promoter to control the amount of hematite in the hematite-containing Fischer-Tropsch catalyst.3. The method of wherein the hematite-containing Fischer-Tropsch catalyst comprises from about 0.5 to about 80 weight percent hematite.4. The method of wherein the hematite promoter is selected from the group consisting of basic silica claim 2 , acidic silica claim 2 , ...

Egg-shell type hybrid structure of highly dispersed nanoparticle-metal oxide support, preparation method thereof, and use thereof

The present invention relates to an egg-shell type hybrid structure of highly dispersed nanoparticles-metal oxide support, a preparation method thereof, and a use thereof. Specifically, the present invention relates to an egg-shell type hybrid structure of highly dispersed nanoparticles-metal oxide support, providing an excellent platform in a size of nanometers or micrometers which can support nanoparticles selectively in the porous shell portion by employing a metal oxide support with an average diameter of nanometers or micrometers including a core of nonporous metal oxide and a shell of porous metal oxides, a preparation method thereof, and a use thereof.

INORGANIC COMPOSITE OXIDES AND METHODS OF MAKING THE SAME

Described herein are methods for forming inorganic composite oxides. Such methods include combining, at a substantially constant pH of between about 5 and about 6.75 over a period of at least about 5 minutes, an acidic precursor composition and a basic composition to form a precipitate composition, wherein the acidic precursor composition comprises an alumina precursor, a ceria precursor, a zirconia precursor and optionally one or more dopant precursors; stabilizing the precipitate by increasing the pH of the precipitate composition to between about 8 and about 10; and calcining the stabilized precipitate to form an inorganic composite oxide. Also described are inorganic composite oxides formed using such methods. 1. A method for forming an inorganic composite oxide , the method comprising:combining, at a substantially constant pH of between about 5 and about 6.75 over a period of at least about 5 minutes, an acidic precursor composition and a basic composition to form a precipitate composition, wherein the acidic precursor composition comprises an alumina precursor, a ceria precursor, a zirconia precursor and optionally one or more dopant precursors;stabilizing the precipitate by increasing the pH of the precipitate composition to between about 8 and about 10; andcalcining the stabilized precipitate to form an inorganic composite oxide.2. The method according to claim 1 , wherein the substantially constant pH is maintained by (a) controlling a flow rate of the acidic precursor composition claim 1 , the basic composition or both or (b) controlling a concentration of the acidic precursor composition claim 1 , the basic composition or both or (c) controlling a flow rate and a concentration of the acidic precursor composition claim 1 , the basic composition or both.34-. (canceled)5. The method according to claim 1 , wherein the acidic precursor composition and the basic composition are combined at a substantially constant pH of between about 5.5 and about 6.5 over a ...

METHODS, SYSTEMS AND CATALYSTS FOR OXIDIZING CARBON MONOXIDE TO CARBON DIOXIDE

Methods and catalyst compositions for oxidizing CO to COat low temperatures arc disclosed. In embodiment, a method of oxidizing CO to COmay involve heating a gaseous mixture comprising at least CO and Owith a catalyst mixture comprising Pd disposed on a MnOmesoporous support at a temperature of about 0° C. to about 60° C., and wherein the CO to COconversion rate is about 40% to about 100%. 1. A method of oxidizing CO to CO , the method comprising:{'sub': 2', '3', '4', '2, 'heating a gaseous mixture and a catalyst mixture, wherein the gaseous mixture comprises CO and O, and wherein the catalyst mixture comprises at least Pd and MnOat a temperature of about 0° C. to about 60° C.; wherein the heating yields CO to COconversion rate of about 40% to about 100%.'}2. The method of claim 1 , wherein heating comprises heating with a catalyst mixture comprising at least one Pd nanoparticle disposed on at least a portion of a MnOsupport.3. The method of claim 1 , wherein heating comprises heating to a temperature of about 20° C. to about 30° C. claim 1 , and a conversion rate of the CO to COis about 80% to about 100%.4. (canceled)5. The method of claim 1 , wherein heating comprises heating to a temperature of about 0° C. to about 10° C. claim 1 , and a conversion rate of the CO to COis about 40% to about 50%.6. The method of claim 1 , wherein heating comprises heating a gaseous mixture that further comprises N claim 1 , He claim 1 , H claim 1 , Ar claim 1 , or any combination thereof.7. The method of claim 1 , wherein the method comprises a batch process or a continuous flow process.8. The method of claim 7 , wherein heating comprises heating in a continuous flow process where the gaseous mixture is in contact with the catalytic mixture at a flow rate of about 40 mL per minute to about 60 mL per minute.9. The method of claim 1 , wherein heating comprises heating with a catalyst mixture that includes about 1 weight percent to about 5 weight percent of Pd.10. The method of claim ...

METHOD FOR MANUFACTURING ZINC FERRITE CATALYST AND ZINC FERRITE CATALYST MANUFACTURED THEREBY

Provided is a method for producing a zinc ferrite catalyst, the method comprising: preparing a zinc precursor solution; preparing a ferrite precursor solution; obtaining a first precipitate by bringing the zinc precursor solution into contact with an alkaline solution; obtaining a second precipitate by adding the ferrite precursor solution to the first precipitate; and drying and firing the second precipitate after filtering the second precipitate. 1. A method for producing a zinc ferrite catalyst , the method comprising:preparing a zinc precursor solution;preparing a ferrite precursor solution;obtaining a first precipitate by bringing the zinc precursor solution into contact with an aqueous basic solution;obtaining a second precipitate by adding the ferrite precursor solution to the first precipitate; anddrying and firing the second precipitate after filtering the second precipitate.2. The method of claim 1 , wherein the preparing of the zinc precursor solution comprises dissolving a zinc precursor in an amount of 0.1 part by weight to 99 parts by weight based on 100 parts by weight of deionized water (DI water) in the DI water.3. The method of claim 1 , wherein the preparing of the ferrite precursor solution comprises dissolving a ferrite precursor in an amount of 1 part by weight to 80 parts by weight based on 100 parts by weight of deionized water (DI water) in the DI water.4. The method of claim 1 , wherein the zinc precursor and the ferrite precursor are each independently one or more salts selected from the group consisting of nitrate claim 1 , ammonium salt claim 1 , sulfate claim 1 , and chloride claim 1 , or a hydrate thereof.5. The method of claim 1 , wherein the zinc precursor is zinc chloride (ZnCl).6. The method of claim 1 , wherein the ferrite precursor is ferric chloride hydrate (FeCl.6HO).7. The method of claim 1 , wherein a pH of the aqueous basic solution is 7 to 10.8. The method of claim 1 , wherein the aqueous basic solution comprises one or ...

PREPARATION METHOD OF CATALYST COMPRISING A RUTHENIUM-CONTAINING CATALYST LAYER FORMED ON THE BODY SURFACE

The present invention relates to a method for preparing a catalyst comprising a ruthenium-containing catalyst layer highly dispersed with a uniform thickness on a surface of a substrate having a structure, which comprises first aging a mixed solution of a ruthenium precursor-containing solution and a precipitating agent to form a ruthenium-containing precipitate seeds, secondarily aging the first aged mixed solution to grow the seeds thereby forming ruthenium-containing precipitate particles, and then contacting the particles with a substrate to deposit the particles on the surface of the substrate. Since the catalyst has a structure in which the round shaped ruthenium-containing precipitate particles are piled to form the ruthenium-containing catalyst layer, it has a large specific surface area. Thus, the catalyst may exhibit excellent catalytic performance in various reactions for producing hydrogen using a ruthenium catalyst. 1. A method of preparing a catalyst comprising a ruthenium-containing catalyst layer formed on a surface of a substrate having a structure , which comprises:adding a precipitating agent to a ruthenium (Ru) precursor-containing solution to obtain a mixed solution (step 1);first aging the mixed solution of the step 1 at 10° C. to 40° C. to form ruthenium-containing precipitate seeds (step 2);secondarily aging the first aged mixed solution at 80° C. to 100° C. to grow the ruthenium-containing precipitate seeds, thereby forming ruthenium-containing precipitate particles (step 3);contacting the secondarily aged mixed solution with the substrate to coat the surface of the substrate with the ruthenium-containing precipitate particles, thereby inducing the formation of a ruthenium-containing layer (step 4); andconducting a heat treatment of the ruthenium-containing layer (step 5).2. The method of claim 1 , wherein the step 2 and the step 3 are performed in order.3. The method of claim 1 , wherein the substrate is introduced to the first aged mixed ...

COMPLEX OXIDE, METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFYING CATALYST

Disclosed are a composite oxide which is capable of maintaining a large volume of pores even used in a high temperature environment, and which has excellent heat resistance and catalytic activity, as well as a method for producing the composite oxide and a catalyst for exhaust gas purification employing the composite oxide. The composite oxide contains cerium and at least one element selected from aluminum, silicon, or rare earth metals other than cerium and including yttrium, at a mass ratio of 85:15 to 99:1 in terms oxides, and has a property of exhibiting a not less than 0.30 cm/g, preferably not less than 0.40 cm/g volume of pores with a diameter of not larger than 200 nm, after calcination at 900° C. for 5 hours, and is suitable for a co-catalyst in a catalyst for vehicle exhaust gas purification. 1. A composite oxide comprising (A) cerium and (B) at least one element selected from the group consisting of aluminum , silicon , and rare earth metals other than cerium ,wherein a mass ratio of (A):(B) in the composite oxide is 85:15 to 99:1 in terms oxides, and{'sup': '3', 'wherein the composite oxide has a property of exhibiting a not less than 0.30 cm/g volume of pores with a diameter of not larger than 200 nm, after calcination at 900° C. for 5 hours.'}2. The composite oxide according to claim 1 , having a property of exhibiting a not less than 0.40 cm/g volume of pores with a diameter of not larger than 200 nm claim 1 , after calcination at 900° C. for 5 hours.3. The composite oxide according to claim 1 , having a property of exhibiting a not less than 0.50 cm/g volume of pores with a diameter of not larger than 200 nm claim 1 , after calcination at 900° C. for 5 hours.4. The composite oxide according to claim 1 , having a property of exhibiting a not less than 0.32 cm/g volume of pores with a diameter of not larger than 200 nm claim 1 , after calcination at 800° C. for 5 hours.5. The composite oxide according to claim 1 , comprising at least silicon as (B) ...

Method for the production of new nanomaterials

A method for producing new nanomaterials, 80 to 100 mol % of which are composed of TiO2 and 0 to 20 mol % are composed of another metal or semi-metal oxide that has a specific surface of 100 to 300 m2.g−1and 1 to 3 hydroxyl groups per nm2.

Hydrogenation reaction catalyst and preparation method therefor

Provided are a hydrogenation reaction catalyst and a preparation method therefor, and more particularly, to a hydrogenation reaction catalyst including sulfur as a promoter, thereby selectively hydrogenating an olefin by changing a relative hydrogenation rate of the olefin and an aromatic group during a hydrogenation reaction of an unsaturated hydrocarbon compound containing an aromatic group, and a preparation method therefor.

Method for preparing fructose or xylulose from biomass containing glucose or xylose using butanol, and method for separating the same

The present invention relates to a method for preparing fructose or xylulose from biomass comprising glucose or xylose, and a method for separating a mixture of glucose and fructose and a mixture of xylose and xylulose.

Sustainable Oxygen Carriers for Chemical Looping Combustion with Oxygen Uncoupling and Methods for Their Manufacture

An oxygen carrier (OC) for use in Chemical Looping technology with Oxygen Uncoupling (CLOU) for the combustion of carbonaceous fuels, in which commercial grade metal oxides selected from the group consisting of Cu, Mn, and Co oxides and mixtures thereof constitute a primary oxygen carrier component. The oxygen carrier contains, at least, a secondary oxygen carrier component which is comprised by low-value industrial materials which already contain metal oxides selected from the group consisting of Cu, Mn, Co, Fe, Ni oxides or mixtures thereof. The secondary oxygen carrier component has a minimum oxygen carrying capacity of 1 g of O2 per 100 g material in chemical looping reactions. Methods for the manufacture of the OC are also disclosed.

Carbon supported catalyst comprising a modifier and process for preparing the carbon supported catalyst

The invention is related to a carbon supported catalyst comprising a carbon-comprising support with a BET surface area in a range from 400 m 2 /g to 2000 m 2 /g, a modifier comprising at least one mixed metal oxide, comprising niobium and titanium, and/or a mixture, comprising niobium oxide and titanium oxide, a catalytically active metal compound, wherein the catalytically active metal compound is platinum or an alloy comprising platinum and a second metal or an intermetallic compound comprising platinum and a second metal, the second metal being selected from the group consisting of cobalt, nickel, chromium, copper, palladium, gold, ruthenium, scandium, yttrium, lanthanum, niobium, iron, vanadium and titanium. The invention is further related to a process for preparing the carbon supported catalyst.

Nickel hexaaluminate-containing catalyst for reforming hydrocarbons in the presence of carbon dioxide

The invention relates to a nickel hexaaluminate-comprising catalyst for reforming hydrocarbons, preferably methane, in the presence of carbon dioxide, which comprises hexaaluminate in a proportion in the range from 65 to 95% by weight, preferably from 70 to 90% by weight, and a crystalline, oxidic secondary phase selected from the group consisting of LaAlO 3 , SrAl 2 O 4 and BaAl 2 O 4 in the range from 5 to 35% by weight, preferably from 10 to 30% by weight. The BET surface area of the catalyst is ≧5 m 2 /g, preferably ≧10 m 2 /g. The molar nickel content of the catalyst is ≦3 mol %, preferably ≦2.5 mol % and more preferably ≦2 mol %. The interlayer cations are preferably Ba and/or Sr. The process for producing the catalyst comprises the steps: (i) production of a mixture of metal salts, preferably nitrate salts of Ni and also Sr and/or La, and a nanoparticulate aluminum source, (ii) molding and (iii) calcination. The catalyst of the invention is brought into contact with hydrocarbons, preferably methane, and CO 2 in a reforming process, preferably at a temperature of >800° C. The catalyst is also distinguished by structural and preferred properties of the nickel, namely that the nickel particles mostly have a tetragonal form and the particles have a size of ≦50 nm, preferably ≦40 nm and particularly preferably ≦30 nm, and are present finely dispersed as grown-on hexaaluminate particles. The catalyst has only a very low tendency for carbonaceous deposits to be formed.

HYBRID NANOSTRUCTURED PHOTOCATALYSTS AND PREPARATION METHOD THEREOF

The present invention relates to a hybrid nanostructured photocatalyst, comprising a first nanoparticle comprising silver halide (AgX); a second nanoparticle, which is formed on an outer surface of the first nanoparticle and comprises Ag; and a polymer formed on any one outer surface of the first nanoparticle and the second nanoparticle, and a preparation method thereof. Specifically, the present invention provides a hybrid nanostructured photocatalyst having a high photocatalytic activity in a visible light region and a preparation method thereof. 1. A hybrid nanostructured photocatalyst , comprising:a first nanoparticle comprising silver halide (AgX), wherein X is any of Cl, Br, and I;multiple second nanoparticles in a dendritic form on an outer surface of the first nanoparticle and comprising Ag; anda polymer formed on any one outer surface of the first nanoparticle and the multiple second nanoparticles.2. The hybrid nanostructured photocatalyst of claim 1 , wherein the first nanoparticle has at least one shape selected from the group consisting of a semi-sphere claim 1 , a sphere claim 1 , a truncated-cube claim 1 , and a cube.3. The hybrid nanostructured photocatalyst of claim 1 , wherein the second nanoparticle is formed on the outer surface of the first nanoparticle claim 1 , and the shape of the hybrid nanostructured photocatalyst is formed to correspond to the shape of the first nanoparticle.4. The hybrid nanostructured photocatalyst of claim 1 , wherein at least a part of the first nanoparticle and the second nanoparticle has a crystal structure.5. The hybrid nanostructured photocatalyst of claim 1 , wherein at least a part of the first nanoparticle and the second nanoparticle has a face-centered cubic structure.6. The hybrid nanostructured photocatalyst of claim 1 , wherein the photocatalyst has a band gap energy of 2.0 eV to 3.0 eV and a photocatalytic activity in a visible light region.7. (canceled)8. The hybrid nanostructured photocatalyst of claim 1 , ...

PROCESS FOR PREPARING V-Ti-P CATALYSTS FOR SYNTHESIS OF 2,3-UNSATURATED CARBOXYLIC ACIDS

The invention relates to a catalyst composition comprising a mixed oxide of vanadium, titanium, and phosphorus. The titanium component is derived from a water-soluble, redox-active organo-titanium compound. The catalyst composition is highly effective at facilitating the vapor-phase condensation of formaldehyde with acetic acid to generate acrylic acid, particularly using an industrially relevant aqueous liquid feed. Additionally, the catalyst composition is catalytically active towards the formation of acrylic acid from methylene diacetate and methacrylic acid from methylene dipropionate; both reactions are carried out with high space time yields.

CATALYST COMPOSITIONS AND PROCESS FOR DIRECT PRODUCTION OF HYDROGEN CYANIDE IN AN ACRYLONITRILE REACTOR FEED STREAM

The present invention relates to catalyst compositions containing a mixed oxide catalyst of formula (I) or formula (II) as described herein, their preparation, and their use in a process for ammoxidation of various organic compounds to their corresponding nitriles and to the selective catalytic oxidation of excess NHpresent in effluent gas streams to Nand/or NO. 1. A catalyst composition comprising a mixed oxide catalyst of formula (I) or (II):{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'h, 'sup': 1', '2', '3', '4', '5', '6, 'MoXXXXXXO\u2003\u2003(I)'}{'br': None, 'sub': i', 'j', 'k', 'm', 'n', 'q', 'x', 'y', 'r, 'FeMoCrBiMNQXYO\u2003\u2003(II)'} [{'sup': '1', 'Xis Cr and/or W;'}, {'sup': '2', 'Xis Bi, Sb, As, P, and/or a rare earth metal;'}, {'sup': '3', 'Xis Fe, Ru, and/or Os;'}, {'sup': '4', 'Xis Ti, Zr, Hf, B, Al, Ga, In, TI, Si, Ge, Sn, and/or Pb;'}, {'sup': '5', 'Xis Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Mn, Re, V, Nb, Ta, Se, and/or Te;'}, {'sup': '6', 'Xis an alkaline earth metal and/or an alkali metal;'}, '0≤a≤5;', '0.03≤b≤25;', '0≤c≤20;', '0≤d≤200;', '0≤e≤8;', '0≤f≤3; and', 'h is the number of oxygen atoms required to satisfy the valence requirements of the component elements other than oxygen present in formula (I), where', '1≤c+d+e+f≤200;', '0≤e+f≤8; and, 'wherein in the formula (I) M is Ce and/or Sb;', 'N is La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ti, Zr, Hf, B, Al, Ga, In, TI, Si, Ge, Sn, Pb, P, and/or As;', 'Q is W, Ru, and/or Os;', 'X is Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Mn, Re, V, Nb, Ta, Se, and/or Te;', 'Y is an alkaline earth metal and/or an alkali metal;', '0.2≤i≤100;', '0≤j≤2;', '0≤k≤2;', '0.05≤m≤10;', '0≤n≤200;', '0≤q≤8;', '0≤x≤30;', '0≤y≤8;', 'j and kj; and', 'r is the number of oxygen atoms required to satisfy the valence requirements of the component elements other than oxygen present in formula (II),, 'wherein in the formula (II) 4≤m+n+q+x+y≤200;', '0≤q+x+y≤30; and, 'wherein{'sup ...

Solid-phase catalyst for decomposing hydrogen peroxide and method for producing same

The present invention provides a solid-phase catalyst for decomposing hydrogen peroxide comprising a permanganate salt and a manganese (II) salt. The solid-phase catalyst stays a solid state in the form of nanoparticles at the time of hydrogen peroxide decomposition, and thus can be recovered for reuse and also has an excellent decomposition rate. In the method for producing a solid-phase catalyst for decomposing hydrogen peroxide according to the present invention, a solid-phase catalyst is produced from a solution containing a permanganate salt, a manganese (II) salt, and an organic acid, so that the produced solid-phase catalyst is precipitated as a solid component even after a catalytic reaction, and thus is reusable and environmentally friendly, and cost reduction can be achieved through the simplification of a catalyst production technique.

MATERIALS AND METHODS FOR OXIDATIVE DEHYDROGENATION OF ALKYL AROMATIC COMPOUNDS INVOLVING LATTICE OXYGEN OF TRANSITION METAL OXIDES

In one aspect, the disclosure relates to a process for dehydrogenating a first dehydrogenation reactant into its unsaturated counterparts. The disclosed process comprises introducing a dehydrogenation reactant to a metal oxide catalyst having dehydrogenation activity, and dehydrogenating the dehydrogenation reactant to provide its unsaturated counterpart and hydrogen; selectively combusting the hydrogen released during dehydrogenation using a lattice oxygen from the metal oxide catalyst, resulting in a reduced metal oxide catalyst and steam; re-oxidizing the reduced metal oxide catalyst by introducing a gaseous oxidant to the reduced metal oxide catalyst; and optionally re-using the re-oxidized metal oxide catalyst for catalytic conversion and combustion. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure. 1. A process for oxidative dehydrogenation , comprising:a. introducing one or more dehydrogenation reactants to a metal oxide catalyst having dehydrogenation activity, and dehydrogenating the one or more dehydrogenation reactants to provide a dehydrogenated reaction product and hydrogen;b. selectively combusting the hydrogen released during dehydrogenation using a lattice oxygen from the metal oxide catalyst, resulting in a reduced metal oxide catalyst and steam;c. re-oxidizing the reduced metal oxide catalyst by introducing a gaseous oxidant to the reduced metal oxide catalyst; and optionallyd. re-using the re-oxidized metal oxide catalyst for a subsequent dehydrogenation and/or selective combustion.2. The process of claim 1 , wherein the dehydrogenation reactants comprise an alkyl aromatic hydrocarbon or a substituted alkyl aromatic hydrocarbon and the dehydrogenated reaction product comprises an alkene aromatic hydrocarbon or substituted alkene aromatic hydrocarbon claim 1 , respectively.3. The process of claim 1 , wherein the dehydrogenation reactants ...

FIBROUS ZEOLITE CATALYST FOR HYDROCRACKING

A hydrocracking catalyst for petroleum hydrocracking is provided, the hydrocracking catalyst provided in a form of at least one fiber, and the at least one fiber comprising at least one zeolite and at least one metal oxide. Methods are also provided to form the hydrocracking catalyst in the form of at least one fiber, particularly electrospinning. 1. A hydrocracking catalyst for petroleum hydrocracking , comprising:the hydrocracking catalyst provided in a form of at least one fiber; andthe at least one fiber comprising at least one zeolite and at least one metal oxide.2. The catalyst of claim 1 , wherein:the at least one zeolite is a Y-zeolite.3. The catalyst of claim 2 , wherein:{'sub': 2', '2', '3, 'the Y-zeolite has a SiO/AlOmole ratio of at least 3 to 1.'}4. The catalyst of claim 1 , wherein:the at least one metal oxide is one of nickel oxide and tungsten trioxide.5. The catalyst of claim 1 , wherein:the at least one metal oxide further comprises at least a first metal oxide and a second metal oxide.6. The catalyst of claim 5 , wherein:the first metal oxide is nickel oxide; andthe second metal oxide is tungsten trioxide.7. The catalyst of claim 1 , wherein:81-87% by weight of the at least one fiber comprises the at least one zeolite; and1-19% by weight of the at least one fiber comprises the at least one metal oxide.8. The catalyst of claim 1 , wherein:the at least one fiber has a length in a range of 0.1-500 microns; andthe at least one fiber has a diameter in a range of 50-800 nanometers.9. The catalyst of claim 1 , wherein:the at least one fiber has a length-to-diameter aspect ratio in a range of 50:1 to 1,000:1.10. The catalyst of claim 1 , wherein:the hydrocracking catalyst is binder free.11. The catalyst of claim 1 , wherein:the at least one fiber comprises a plurality of fibers.12. The catalyst of claim 11 , wherein:the plurality of fibers form a fiber mat.13. A method of making a hydrocracking catalyst for petroleum hydrocracking claim 11 , comprising: ...

CATALYSTS FOR PETROCHEMICAL CATALYSIS

Metal oxide catalysts comprising various dopants are provided. The catalysts are useful as heterogeneous catalysts in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2 hydrocarbons such as ethane and ethylene. Related methods for use and manufacture of the same are also disclosed. 185-. (canceled)86. A method for the oxidative coupling of methane , the method comprising contacting methane with a catalyst at temperatures ranging from about 550° C. to about 750° C. , wherein the method comprises a methane conversion of greater than 20% and a C2 selectivity of greater than 50% , and wherein the catalyst comprises the following formula:{'br': None, 'sub': x', 'y', 'z, 'ABO;'} A is an element from the lanthanides or group 2, 3, 4, 6 or 13;', 'B is an element from groups 4, 12 or 13 of the periodic table or Ce, Pr, Nd, Sm, Eu, Gd, Tb or Ho;', 'O is an oxygen anion; and', 'x, y and z are each independently numbers greater than 0,, 'whereinthe catalyst further comprising one or more dopants from any one of groups 2, 3 or the lanthanides, and provided that A and B are not the same.87. The method of claim 86 , wherein A is Ba claim 86 , Zr claim 86 , Sr claim 86 , Sm claim 86 , Hf claim 86 , Gd claim 86 , Er claim 86 , Y claim 86 , Ca claim 86 , La claim 86 , Mg claim 86 , W claim 86 , B claim 86 , Tb or Ce.88. The method of claim 86 , wherein B is Zn claim 86 , Hf claim 86 , Zr claim 86 , Al claim 86 , Ti claim 86 , Pr claim 86 , Nd claim 86 , Ce claim 86 , Sm claim 86 , Eu claim 86 , Gd claim 86 , Tb or Ho.89. The method of claim 86 , wherein A is from group 2 claim 86 , and B is from group 4.90. The method of claim 86 , wherein A is Ba claim 86 , Sr or Ca.91. The method of claim 86 , wherein B is Ti claim 86 , Zr or Hf.92. The method of claim 86 , wherein the catalyst has the formula ABO.93. The method of claim 86 , wherein the catalyst comprises one or more dopant from group 2.94. The method of claim 86 , wherein the catalyst comprises ...

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 ...

Preparation method of fluorine-doped lamellar black titanium dioxide nano material

The method for preparing fluorine-doped lamellar black TiO 2 nanomaterials includes mixing a solution of tetra-n-butyl titanate, n-propanol and hydrofluoric acid together, and then stir the solutions for a period of time. The solution is transferred into an autoclave and reacts at a certain temperature for a period of time. The sample obtained by the reaction is washed and dried. Then, the sample is heated in a protective atmosphere for a period of time so as to produce the fluorine-doped lamellar black TiO 2 nanomaterials. This fluorine-doped lamellar black TiO 2 owns superior optical absorption and electron transport performances.

Method for Preparation of a Group 4 Metal Silicate and Use Thereof

The invention provides a method for the preparation of an amorphous silicate of at least one metal from the Group 4 of the Periodic Table of Elements with a total pore volume of at least 0.3 mL/g. The method of preparation involves the use of pore shaping conditions, which can be the use of a pore shaper and optionally an increased precipitation temperature, e.g. at least 60° C. The silicate of the invention is especially suitable in catalytic reactions such as esterifications, Michael additions, transesteritications, (ep)oxidations, hydroxylations, or in absorbance of small inorganic and organic molecules e.g. CO 2 or aromatic compounds.

CATALYTIC BIOMASS CONVERSION

A biorefining method of processing a lignocellulosic biomass to separate lignin and hemicellulose from cellulose includes the steps of (a) reacting the biomass in an aqueous slurry having a pH less than 7, comprising a transition metal catalyst, hydrogen peroxide; and (b) 1. A method of producing a nanoparticulate catalyst comprising multivalent iron from an aqueous solution , comprising the steps of:(a) oxidizing or allowing to oxidize the aqueous solution comprising multivalent iron;(b) collecting precipitated nanoparticles or aggregated nanoparticles.2. The method of wherein the aqueous solution comprises groundwater.3. The method of comprising the further step of amending the aqueous solution with one or more additional transition metals claim 2 , prior to the oxidation step.4. The method of wherein the aqueous solution is amended with copper ions.5. A nanoparticulate catalyst comprising multivalent iron claim 3 , at least one iron oxide and at least one iron hydroxide.6. The catalyst of further comprising calcium carbonate.7. A method of using a nanoparticulate catalyst of to produce crystaline cellulose from biomass comprising the steps of:(a) reacting the biomass in an aqueous slurry having a pH less than 7, comprising the catalyst and hydrogen peroxide.1. A method of producing a nanoparticulate catalyst comprising multivalent iron from an aqueous solution claim 5 , comprising the steps of:(a) oxidizing or allowing to oxidize the aqueous solution comprising multivalent iron;(b) collecting precipitated nanoparticles or aggregated nanoparticles.2. The method of wherein the aqueous solution comprises groundwater.3. The method of comprising the further step of amending the aqueous solution with one or more additional transition metals claim 2 , prior to the oxidation step.4. The method of wherein the aqueous solution is amended with copper ions.5. A nanoparticulate catalyst comprising multivalent iron claim 3 , at least one iron oxide and at least one iron ...

Catalyst for Manufacturing Multi-Walled Carbon Nanotube and Method of Manufacturing Multi-Walled Carbon Nanotube Using the Same

Disclosed are a catalyst for manufacturing multi-walled carbon nanotubes and a method of manufacturing multi-walled carbon nanotubes, which has aligned bundle structure with a small number of walls and low surface resistance and density. The catalyst for manufacturing multi-walled carbon nanotubes according to the present invention includes a silica-alumina (SiO—A1O) mixed carrier; and a transition metal main catalyst supported on the mixed carrier. 1. A catalyst for manufacturing multi-walled carbon nanotubes comprising:{'sub': 2', '2', '3, 'a silica-alumina (SiO—AlO) mixed carrier; and'}a transition metal main catalyst supported on the mixed carrier.2. The catalyst for manufacturing multi-walled carbon nanotubes according to claim 1 , wherein the catalyst is composed of 85 to 95% by weight of the silica-alumina mixed carrier and 5 to 15% by weight of the transition metal main catalyst.3. The catalyst for manufacturing multi-walled carbon nanotubes according to claim 2 , wherein the silica-alumina mixed carrier is composed of 5 to 20% by weight of the silica and 80 to 95% by weight of the alumina.4. The catalyst for manufacturing multi-walled carbon nanotubes according to claim 1 , wherein the transition metal main catalyst comprises at least one transition metal selected from the group consisting of iron (Fe) claim 1 , cobalt (Co) claim 1 , nickel (Ni) claim 1 , yttrium (Y) claim 1 , molybdenum (Mo) claim 1 , copper (Cu) claim 1 , platinum (Pt) claim 1 , palladium (Pd) claim 1 , vanadium (V) claim 1 , niobium (Nb) claim 1 , tungsten (W) claim 1 , chromium (Cr) claim 1 , iridium (Ir) and titanium (Ti).5. The catalyst for manufacturing multi-walled carbon nanotubes according to claim 1 , wherein the carbon nanotubes manufactured by the catalyst has an inversely proportional relationship in that number claim 1 , density and surface resistance of walls is decreased according to increase in silica content of the silica-alumina mixed carrier.6. A method of manufacturing ...

Extruded resid demetallation catalyst

Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise alumina and 5 wt % or less titania. Catalyst prepared from the supports have at least 30 to 80 volume percent of its pore volume in pores having a diameter of between 200 and 500 angstroms. Catalysts in accordance with the invention exhibit improved catalytic activity and stability to remove metals from heavy feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion.

METHOD FOR ENHANCING DEGRADATION OF ESTER VOCS WITH CERIUM OXIDE SUPPORTED PALLADIUM SINGLE ATOM CATALYST UNDER LOW-TEMPERATURE MICROWAVE

A method for enhancing degradation of ester volatile organic compounds with a cerium oxide supported palladium single atom catalyst under low-temperature microwave comprises the steps of firstly preparing a single atom catalyst Pd/CeO, adding the catalyst Pd/CeOinto a reaction cavity, initiating microwave radiation to enhance the catalysis reaction, and quickly introducing an ester compound with a concentration of 50˜5000 mg/mand a space velocity of 2000˜100000 hinto the reaction cavity from a vapor phase sampling port to react when the reaction temperature is 10˜80° C. A catalyst packed column is provided in the reaction cavity, the vapor phase sampling port is defined at the bottom of the reaction cavity, and an exhaust port is defined at the top of the cavity. The microwave method can enhance and activate active sites, prevent the aging of active sites, and enable the chemical reaction rate to be increased by more than 17.9%. 1. A method for enhancing degradation of ester volatile organic compounds (VOCs) with a cerium oxide loaded palladium single atom catalyst under low-temperature microwave , comprising the following steps:(a) preparation of a catalyst:(1) dissolving a cerium-containing compound into deionized water to form a solution; adding NaOH in the solution, until pH=8˜10, stirring, and then reacting in a water bath pot to obtain cerium oxide-containing solution;(2) adding a palladium-containing compound and sodium borohydride together into the cerium oxide-containing solution to react;(3) after the reaction is ended, centrifuging the solution on a centrifuge, and then removing the solution in a centrifuge tube to obtain a precipitation product; and{'sub': 2', '2', '2, '(4) washing the precipitation product with deionized water, drying overnight, and calcining in a muffle furnace at Natmosphere containing 3-7% of Hto obtain a single atom catalyst Pd/CeO;'}(b) microwave-assisted enhancement of degradation:{'sub': '2', 'sup': 3', '−1, 'adding the catalyst ...

CATALYST AND CATALYST GROUP

An object of the present invention is to provide a catalyst ensuring that when a gas-phase catalytic oxidation reaction of a material substance is conducted using a catalyst to produce a target substance, the pressure loss and coking are suppressed and the target substance can be produced in high yield. The present invention is related to a ring-shaped catalyst having a straight body part and a hollow body part, which is used when a gas-phase catalytic oxidation reaction of a material substance is conducted to produce a target substance, wherein a length of the straight body part is shorter than a length of the hollow body part and at least at one end part, a region from an end part of the straight body part to an end part of the hollow body part is concavely curved. 1. A ring-shaped catalyst having a straight body part and a hollow body part , which is used when a gas-phase catalytic oxidation reaction of an olefin or a tertiary butanol is conducted to produce a corresponding unsaturated aldehyde and/or unsaturated carboxylic acid , wherein:a length of the straight body part is shorter than a length of the hollow body part and at least at one end part, a region from an end part of the straight body part to an end part of the hollow body part is concavely curved.2. A ring-shaped catalyst having a straight body part and a hollow body part , which is used when gas-phase catalytic oxidation of an unsaturated aldehyde is conducted to produce a corresponding unsaturated carboxylic of an unsaturated aldehyde acid , wherein:a length of the straight body part is shorter than a length of the hollow body part and at least at one end part, a region from an end part of the straight body part to an end part of the hollow body part is concavely curved.3. The catalyst according to claim 1 , wherein the straight body part is present between a surface including one end part of the hollow body part and a surface including another end part of the hollow body part.4. The catalyst ...

CATALYST FOR THE CONVERSION OF NATURAL OR ASSOCIATED GAS INTO SYNTHESIS GAS IN AN AUTOTHERMAL REFORMING PROCESS AND METHOD FOR PREPARING THE SAME

A catalyst in a calcined state has a specific surface area of 20-50 m/g of catalyst, and a specific surface area of nickel metal after reduction of the catalyst of 8 to 11 m/g, wherein the average particle size of nickel metal is 3-8 nm, the dispersion of the particles is 10-16%, and the content of nickel is 5-15 wt. % based on the weight of calcined catalyst. A support has a specific surface area of 40-120 m/g with a pore volume of the support of 0.2-0.4 cm/g, wherein the support is selected from a mixture of zirconium oxide and cerium oxide or magnesium oxide, cerium oxide and the ballast being zirconium oxide. The catalyst further contains a promoter selected from the group consisting of palladium and ruthenium, in an amount of from 0.01 to 0.5 wt. %. The catalyst is prepared by co-precipitation with ammonium hydroxide from a solution containing nickel, cerium and zirconium precursors and distilled water or from a solution containing nickel, cerium, zirconium, and magnesium precursors and distilled water, and having a pH of 8.0-9.0. The process is carried out under agitation at a temperature of 40-45° C. for 1-2 hours, followed by filtration, drying at a temperature of 100-110° C. for 6-8 hours, and calcining at a temperature of 400-650° C. for 4-6 hours. The invention provides a high average conversion of natural/associated gas of at least 90% in an autothermal reforming reaction of natural or associated gas, and a high synthesis gas output of at least 7000 m/m·h. 1. A catalyst for the conversion of natural/associated gas to synthesis-gas in an autothermal reforming process , having a specific surface area in a calcined state of 20 to 50 m/g of catalyst and a specific surface area of nickel metal after reduction of the catalyst of 8 to 11 m/g , an average nickel metal particles of 3 to 8 nm , and a particle dispersion of 10 to 16% , the catalyst comprising from 5 to 15 wt. % of nickel based on the weight of the calcined catalyst , and a support having a specific ...

ALLOYED ZEOLITE CATALYST COMPONENT, METHOD FOR MAKING AND CATALYTIC APPLICATION THEREOF

The presently disclosed and claimed inventive concept(s) generally relates to a method of making a solid catalyst component comprising a zeolite with a modifier and at least one Group VIII metal alloyed with at least one transition metal and a process of converting mixed waste plastics into low molecular weight organic compounds using the solid catalyst component. The process of converting mixed waste plastics into low molecular weight organic compounds may employ the use of a non-thermal catalytic plasma reactor, which may be configured as a fluid bed reactor or fixed bed reactor. 113.-. (canceled)14. A process of converting a mixed waste plastic into a low molecular weight organic compound , comprising the steps of(a) feeding particles of the mixed waste plastic, plasma, and a solid catalyst component into a non-thermal catalytic plasma reactor, the solid catalyst component comprising (i) a modified zeolite and (ii) alloyed metals into a fluidized bed reactor;(b) heating the particles of the mixed waste plastic and the solid catalyst component at a temperature effective to produce a coarse filler, inorganic components, coke, a volatile organic component, and a spent catalyst component;(c) withdrawing a first stream comprising the volatile organic component from the reactor;(d) withdrawing a second stream comprising the spent catalyst component, the coke, the coarse filler and the inorganic components from the reactor;(e) heating the second stream in a regenerator in the presence of oxygen, air, or a blend of oxygen with an inert gas at a temperature effective to convert the coke to a mixture of carbon monoxide, carbon dioxide and water, and to regenerate the solid catalyst component; and(f) separating the regenerated solid catalyst component from the coarse filler and the inorganic components.15. The process of claim 14 , wherein the inert gas of step (e) is nitrogen claim 14 , steam or combinations thereof.16. The process of claim 14 , wherein the volatile ...

Cross-Coupling Reaction Catalysts, and Methods of Making and Using Same

The present invention provides novel transition-metal precatalysts that are useful in preparing active coupling catalysts. In certain embodiments, the precatalysts of the invention are air-stable and moisture-stable. The present invention further provides methods of making and using the precatalysts of the invention. 2. The precatalyst of claim 1 , wherein each occurrence of M is independently selected from the group consisting of Pd claim 1 , Ni claim 1 , and Pt.3. The precatalyst of claim 1 , wherein at least one applies:(a) the two occurrences of M in (I) are identical;(b) the two ligands comprising 5-membered rings are identical;(c) each occurrence of Z is independently selected from the group consisting of CH and CR.46-. (canceled)7. The precatalyst of claim 1 , wherein each occurrence of X is independently selected from the group consisting of triflate claim 1 , pentafluoroethanesulfonate claim 1 , heptafluoropropanesulfonate claim 1 , and nonafluorobutanesulfonate.8. (canceled)11. The precatalyst of claim 9 , wherein M is selected from the group consisting of Pd claim 9 , Ni claim 9 , and Pt.12. (canceled)13. The precatalyst of claim 9 , wherein each occurrence of Z is independently selected from the group consisting of CH and CR.14. The precatalyst of claim 9 , wherein X is selected from the group consisting of triflate claim 9 , pentafluoroethanesulfonate claim 9 , heptafluoropropanesulfonate claim 9 , and nonafluorobutanesulfonate.15. (canceled)16. The precatalyst of claim 9 ,wherein L is selected from the group consisting of 1,3-bis(2,6-diisopropyl phenyl)-1,3-dihydro-2H-imidazol-2-ylidene and 1,3-bis(2,6-bis-(diphenylmethyl)-4-methoxyphenyl)imidazol-2-ylidene, orwherein L is a bidentate phosphine ligand.17. (canceled)18. The precatalyst of claim 16 , wherein L is a bidentate phosphine ligand selected from the group consisting of AmPhos (di-t-butylphosphino-4-dimethylaminobenzene) claim 16 , DavePhos (2-dicyclohexylphosphino-2′-(N claim 16 ,N- ...

COMPOSITION BASED ON OXIDES OF CERIUM, OF NIOBIUM AND, OPTIONALLY, OF ZIRCONIUM AND USE THEREOF IN CATALYSIS

A composition based on cerium and niobium oxide in a proportion of niobium oxide of 2% to 20% is described. This composition can include zirconium oxide, optionally 50% of cerium oxide, 2% to 20% of niobium oxide, and at most 48% of zirconium oxide. Also described, is the use of the composition for treating exhaust gases. 1. A composition comprising niobium oxide with the following proportions by weight:niobium oxide: from 2% to 20%; andthe remainder as cerium oxide.2. The composition as claimed in claim 1 , wherein the composition further comprises zirconium oxide with the following proportions by weight:cerium oxide: at least 50%;niobium oxide: from 2% to 20%; andzirconium oxide: up to 48%.3. The composition as claimed in claim 2 , wherein the composition further comprises at least one oxide of an element M selected from the group consisting of tungsten claim 2 , molybdenum claim 2 , iron claim 2 , copper claim 2 , silicon claim 2 , aluminum claim 2 , manganese claim 2 , titanium claim 2 , vanadium and a rare earth metal other than cerium claim 2 , with the following proportions by weight:cerium oxide: at least 50%;niobium oxide: from 2% to 20%;oxide of the element M: up to 20%; andthe remainder as zirconium oxide.4. The composition as claimed in claim 1 , wherein after calcination at 800° C. for 4 hours claim 1 , the composition exhibits an acidity of at least 6×10this acidity being expressed in ml of ammonia per mof composition.5. The composition as claimed in claim 1 , wherein the composition comprises niobium oxide in a proportion by weight of between 3% and 15%.6. The composition as claimed in claim 2 , wherein the composition comprises cerium oxide in a proportion by weight of at least 65% and niobium oxide in a proportion by weight between 2% and 12%.7. The composition as claimed in claim 6 , wherein the composition comprises cerium oxide in a proportion by weight of at least 70%.8. The composition as claimed in claim 6 , wherein the composition comprises ...

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 , ...

CERIUM MANGANESE CATALYST, PREPARATION METHOD THEREFOR AND USE THEREOF

A cerium manganese catalyst for ozone decomposition, which is mainly a composite oxide of MnOand CeOwith the chemical constitution of CeMnO, a being a natural number selected from 6 to 15. A method for preparing a catalyst comprises: mixing a solution containing a cerium source and a manganese source with excessive urea, reacting to obtain a precipitate, washing the precipitate to neutral, drying, and roasting to obtain the cerium manganese catalyst. 1. A cerium-manganese catalyst , wherein the cerium-manganese catalyst has a following chemical composition: CeMnO , a value of a in CeMnOis a natural number selected from 6 to 15 , and the cerium-manganese catalyst is mainly a composite oxide of MnOand CeO.2. The cerium-manganese catalyst according to claim 1 , wherein the cerium-manganese catalyst is in a form of particles.3. A method for preparing a cerium-manganese catalyst claim 1 , comprising: mixing a solution containing a cerium source and a manganese source with excess urea claim 1 , carrying out a reaction to obtain a precipitate claim 1 , washing the precipitate to a neutral pH claim 1 , drying claim 1 , and calcining to obtain the cerium-manganese catalyst.4. The preparation method according to claim 3 , wherein a molar ratio of cerium in the cerium source to manganese in the manganese source is 1:(6-15).5. The preparation method according to claim 3 , wherein a temperature of the reaction is 60° C. to 100° C.6. The preparation method according to claim 3 , wherein the cerium source is selected from one or a mixture of at least two of cerium nitrate claim 3 , cerium sulfate claim 3 , cerium acetate or cerium chloride.7. The preparation method according to claim 3 , wherein the manganese source is selected from one or a mixture of at least two of manganese nitrate claim 3 , manganese sulfate claim 3 , manganese acetate or manganese chloride.8. The preparation method according to claim 3 , wherein a period for the reaction is 8 to 24 hours.9. The preparation ...

METHOD FOR DIRECT PRODUCTION OF GASOLINE-RANGE HYDROCARBONS FROM CARBON DIOXIDE HYDROGENATION

A method for carbon dioxide direct hydrogenation to gasoline-range hydrocarbons is provided in this invention. Under the reaction conditions of 250-450° C., 0.01-10.0 MPa, 500-50000 mL/(h·g) of feedstocks, 0.5-8 molar ratio of Hto CO, the mixture of carbon dioxide and hydrogen may be directly converted to gasoline-range hydrocarbons over a multifunctional hybrid catalyst. The multifunctional hybrid catalyst comprises: iron-based catalyst for carbon dioxide hydrogenation as the first component, one, two or more of zeolites optionally modified by metal as the second component. In this method, a per-pass conversion of COmay achieve more than 33%, the methane selectivity in the hydrocarbon products is less than 8%, the selectivity of gasoline-range hydrocarbons with carbon numbers from 5 to 11 in the hydrocarbon products is more than 70%. The obtained gasoline-range hydrocarbons exhibit high octane number due to its composition comprising isoparaffins and aromatics as the major components. 1. A method for direct production of gasoline-range hydrocarbons via carbon dioxide hydrogenation comprising: converting a gas stream comprising carbon dioxide and hydrogen to gasoline-range hydrocarbons in the presence of a multifunctional catalyst , wherein the multifunctional catalyst comprises an iron-based catalyst for carbon dioxide hydrogenation as a first component and at least one or two kinds of zeolites optionally modified with a metal as a second component , and the mass ratio of the first component to the second component is 1:10 to 10:1.2. The method according to claim 1 , wherein the converting is conducted under the following conditions: a temperature of 250-450° C. claim 1 , a pressure of 0.01-10.0 MPa claim 1 , a gas hour space velocity of the gas stream being 500-50000 ml/((h·g) claim 1 , and a molar ratio of hydrogen to carbon dioxide in the gas stream being 0.5-8.0.3. The method according to claim 1 , wherein the iron-based catalyst for carbon dioxide ...

METHODS FOR THE PREPARATION OF ALUMINA BEADS FORMED BY DEWATERING A HIGHLY DISPERSIBLE GEL

A process for the preparation of an alumina in the form of beads with a sulphur content in the range 0.001% to 1% by weight and a sodium content in the range 0.001% to 1% by weight with respect to the total mass of said beads is described, said beads being prepared by shaping an alumina gel having a high dispersibility by drop coagulation. The alumina gel is itself prepared using a specific precipitation preparation process in order to obtain at least 40% by weight of alumina with respect to the total quantity of alumina formed at the end of the gel preparation process right from the first precipitation step, the quantity of alumina formed at the end of the first precipitation step possibly even reaching 100%. The invention also concerns the use of alumina beads as a catalyst support in a catalytic reforming process. 1. A process for the preparation of an alumina in the form of beads with a sulphur content in the range 0.001% to 1% by weight and a sodium content in the range 0.001% to 1% by weight with respect to the total mass of said beads , said process comprising at least the following steps:{'sub': 2', '3, 'a) at least one first step for the precipitation of alumina, in an aqueous reaction medium, using at least one basic precursor selected from sodium aluminate, potassium aluminate, ammonia, sodium hydroxide and potassium hydroxide and at least one acidic precursor selected from aluminium sulphate, aluminium chloride, aluminium nitrate, sulphuric acid, hydrochloric acid and nitric acid, in which at least one of the basic or acidic precursors comprises aluminium, the relative flow rate of the acidic and basic precursors being selected in a manner such as to obtain a pH of the reaction medium in the range 8.5 to 10.5 and the flow rate of the acidic and basic precursor or precursors containing aluminium being regulated in a manner such as to obtain a percentage completion of said first step in the range 40% to 100%, the percentage completion being defined as ...

CERIUM-ZIRCONIUM COMPOSITE OXIDE, PREPARATION METHOD THEREFOR, AND APPLICATION OF CATALYST

Provided are a cerium-zirconium composite oxide, a preparation method therefor and application of a catalyst. The cerium-zirconium composite oxide has a composite phase structure, and comprises a cerium oxide phase and a cerium-zirconium solid solution phase, or consists of two or more cerium-zirconium solid solution phases with different crystal structures and different chemical compositions, wherein the chemical formula of the cerium-zirconium solid solution phase is CeZrMO, where M is at least one selected from the group consisting of a rare earth element other than cerium, a transition metal element and an alkaline earth metal element, x is 15-85 mol %, and y is 0-20 mol %. 1. A cerium-zirconium composite oxide , wherein the cerium-zirconium composite oxide has a composite phase structure , and comprises a cerium oxide phase and a cerium-zirconium solid solution phase , wherein the chemical formula of the cerium-zirconium solid solution phase is CeZrMO , where M is at least one selected from the group consisting of a rare earth element other than cerium , a transition metal element and an alkaline earth metal element , x is 15˜85 mol % , and y is 0˜20 mol %.2. The cerium-zirconium composite oxide as claimed in claim 1 , wherein after the cerium-zirconium composite oxide is subjected to heat preservation at 1000° C. for 4 hours claim 1 , the cerium oxide phase has a proportion of 0.5˜30 vol % in the cerium-zirconium composite oxide claim 1 , preferably 3˜20 vol %.3. The cerium-zirconium composite oxide as claimed in claim 1 , wherein the cerium-zirconium composite oxide comprises cerium oxide needle-like particles and cerium-zirconium solid solution near-spherical particles claim 1 , and after being subjected to heat preservation at 1000° C. for 4 hours claim 1 , the cerium oxide needle-like particles have a diameter of 7˜20 nm and a length of 50˜300 nm claim 1 , the cerium-zirconium solid solution near-spherical particles have a diameter of 5˜30 nm claim 1 , and ...