КАТАЛИЗАТОР НА ОСНОВЕ ZSM-5

FIELD: chemistry.SUBSTANCE: invention relates to ZSM-5 zeolite microspheres for use as a catalyst, a catalyst component or an intermediate catalyst product for hydrocarbon conversion processes, formed 1) forming a mixture in microspheres, in which the mixture contains a silica-based material and a plurality of particles selected from a group comprising at least one high-density material with an absolute bulk density of at least 0.3 g/cm, ZSM-5 zeolite crystals and combinations thereof; 2) by calcining microspheres and 3) reacting and then heating the microspheres with at least one alkaline solution to form ZSM-5 zeolite in situ on microspheres, wherein ZSM-5 zeolite microspheres contain no more than 8 wt. % of clay or calcined clay material.EFFECT: technical result consists in obtaining in situ a catalyst from zeolite ZSM-5 with high resistance to abrasion with microspheres, virtually free of clay thickeners and/or ZSM-5.50 cl, 3 dwg, 10 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 710 587 C2 (51) МПК B01J 29/40 (2006.01) B01J 37/08 (2006.01) B01J 35/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B01J 29/40 (2019.08); B01J 37/08 (2019.08); B01J 35/08 (2019.08) (21)(22) Заявка: 2017138856, 08.04.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): БАСФ КОРПОРЕЙШН (US) 30.12.2019 09.04.2015 US 62/145,170 (43) Дата публикации заявки: 13.05.2019 Бюл. № 14 (56) Список документов, цитированных в отчете о поиске: EP 156595 B1, 23.12.1992. US 20130225397 A1, 29.08.2013. US 5958818 A1, 28.09.1999. US 20100160527 A1, 24.06.2010. RU 2497589 C2, 10.11.2013. (45) Опубликовано: 30.12.2019 Бюл. № 1 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 09.11.2017 2 7 1 0 5 8 7 Приоритет(ы): (30) Конвенционный приоритет: R U 08.04.2016 (72) Автор(ы): ГАО Синтао (US), КАСТЕЛЬЯНО Кристофер Р. (US), ДАУД Брендан Патрик (US) US 2016/026608 (08.04.2016) C 2 C 2 (86) ...

КОБАЛЬТОВЫЙ НАНОКАТАЛИЗАТОР СИНТЕЗА ФИШЕРА-ТРОПША, ЛОКАЛИЗОВАННЫЙ В ПОРИСТОМ МАТЕРИАЛЕ, И СПОСОБ ЕГО ПОЛУЧЕНИЯ

FIELD: chemistry. SUBSTANCE: cobalt Fischer-Tropsch synthesis nanocatalyst is described localized in a porous material. The catalyst was prepared by a sol-gel process using an organogel as a matrix, which is a linear amphiphilic polymer. The active component is used as a core, and the porous material is used as a shell. The active component comprises the first metal component in the form of Co, the second metal component selected from Ce, La and Zr, and the third metal component selected from Pt, Ru, Rh and Re. The catalyst comprises the first metal component of 10-35 wt %, the second metal component of 0.5-10 wt %, the third metal component of 0.02-2 wt %, and the carrier is the rest. The carrier is a porous material of a spherical shape. The porous material has a pore size of 1-20 nm and a specific surface of 300-500 m 2 /g, the particle diameter of the active component core is 0.5-20.0 nm. EFFECT: low methane selectivity and good selectivity of C 5+ . 9 cl, 1 dwg, 1 tbl, 12 ex 2624441 С 2 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) (11) м ма & а (13) хУ Хх 5 < < < 5“ КО = ея 2ая ^ СР (51) МПК ВОЛ 23/75 (2006.01) ВОЛ 23/54 (2006.01) ВОЛ 21/04 (2006.01) ВОТЛ 21/08 (2006.01) ВОЛ 35/08 (2006.01) ВО1Л 3700 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ ВО1Л 37/04 (2006.01) ВО1Л 3708 (2006.01) В82В 3/00 (2006.01) (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2014124012, 17.10.2012 (24) Дата начала отсчета срока действия патента: 17.10.2012 Дата регистрации: 04.07.2017 Приоритет(ы): (30) Конвенционный приоритет: 24.11.2011 СМ 201110378794.1 (43) Дата публикации заявки: 27.12.2015 Бюл. № 36 (45) Опубликовано: 04.07.2017 Бюл. № 19 (85) Дата начала рассмотрения заявки РСТ на национальной фазе: 24.06.2014 (86) Заявка РСТ: СМ 2012/083091 (17.10.2012) (87) Публикация заявки РСТ: УГО 2013/075559 (30.05.2013) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и партнеры" (72) Автор(ы): ФАНГ Жангджиан (СМ), ЧЕН Йилонг ...

Patent RU2017138856A3

’ВИ“” 2017138856” АЗ Дата публикации: 24.05.2019 Форма № 18 ИЗИМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2017138856/04(067709) 08.04.2016 РСТ/О$2016/026608 08.04.2016 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 62/145,170 09.04.2015 05 Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) КАТАЛИЗАТОР НА ОСНОВЕ #5М-5 Заявитель: БАСФ КОРПОРЕЙШНИ, 0$ 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. П см. Примечания [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) ВО1. 29/40 (2006.01) ВО1./ 37/08 (2006.01) ВО1. 35/08 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) ВО11 29/40, ВО11 37/08, ВО11 35/08 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): Езрасепе Соозе, Рабеагсв, КОРТО, ОЗРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория* относящихся к предмету поиска пункту формулы № ...

КАТАЛИЗАТОР НА ОСНОВЕ ZSM-5

СЕРЕБРЯНЫЙ КАТАЛИЗАТОР ДЛЯ ПОЛУЧЕНИЯ ФОРМАЛЬДЕГИДА

... 1. Способ получения кристаллов серебра с тонким пористым покрытием оксидных материалов элементов, выбранных из группы, которая состоит из алюминия, кремния, циркония, титана и их смесей, отличающийся тем, что ! a) кристаллы серебра контактируют с золь-гелевым раствором элементов, о которых идет речь, и ! b) получающиеся в результате кристаллы серебра собирают, ! c) освобождают от органического растворителя и ! d) затем подвергают термической обработке при температуре между 50°С и точкой плавления серебра. ! 2. Способ по п.1, отличающийся тем, что этап а) выполняют в растворителе, который содержит органический растворитель. ! 3. Способ по п.1 и/или 2, отличающийся тем, что выбранный золь-гелевый раствор представляет собой алкоксид элемента, о котором идет речь в соответствующем спирте в качестве органического растворителя. ! 4. Способ по п.3, отличающийся тем, что выбранное алкоксидное соединение элемента, о котором идет речь является одним выбранным из группы метоксидов, этоксидов, пропоксидов ...

Fischer-tropsch synthesis cobalt nano-catalyst based on porous material confinement, and preparationmethod therefor

Fischer-tropsch synthesis cobalt nano-catalyst based on porous material confinement, and preparationmethod therefor

Fischer-tropsch synthesis cobalt nano-catalyst based on porous material confinement, and preparationmethod therefor

COOXIDATIONSPROMOTOREN FOR USE WITH FCC PROCEDURES

Silver catalyst for formaldehyde preparation

Fischer-Tropsch synthesis cobalt nano-catalyst based on porous material confinement, and preparation method therefor

The present invention provides a Fischer-Tropsch synthesis cobalt nano-catalyst based on porous material confinement, and a preparation method therefor. The catalyst of the present invention uses organogel as a template and is prepared by means of a sol-gel method; metal components are used as the core and the porous material is used as the shell. The metal components comprise a first metal component Co; a second metal component, being one of Ce, La, and Zr, and a third metal component, being one of Pt, Ru, Rh, and Re. In a finished catalyst, the first metal component accounts for 10%-35% by weight, the second metal component accounts for 0.5% to 10% by weight, the third metal component accounts for 0.02% to 2% by weight, and the rest is a carrier. The carrier is the porous material and is spherical, and the component thereof is nano-silica or alumina. The pore diameter of the porous material is 1-20 nm, the surface area is 300-500 m ...

ZIRCONIA CONTAINING SUPPORT MATERIAL FOR CATALYSTS

The present invention addresses at aeast four different aspects relating to catalyat structure, method of making those catalysts and methods of using those catalysts for making allcenyl alkanoates. Separately or together in combination, the various aspects of the invention are directed at improving the production of alkenyl alkanoates and VA in particular, including reduction of by-products and improved production efficiency. A first aspect of the presente invention pertains to a unique palladium/gold catalyst or pre- catalyst (optionally calcined) that includes rhodium or another metal. A second aspect pertains to a palladium/gold catalyst or precatalyst at is based on a layered support material where one layer of the support materiel is substantially free of catalytic components. A third aspect pertains to a palladium/gold catalyst or precatalysts on a zirconia containing support material. A fourth aspect pertains to a palladium gold catalyst or pre- catalyst that is produced from substantially ...

ZIRCONIA CONTAINING SUPPORT MATERIAL FOR CATALYSTS

The present invention addresses at aeast four different aspects relating to catalyat structure, method of making those catalysts and methods of using those catalysts for making allcenyl alkanoates. Separately or together in combination, the various aspects of the invention are directed at improving the production of alkenyl alkanoates and VA in particular, including reduction of by-products and improved production efficiency. A first aspect of the presente invention pertains to a unique palladium/gold catalyst or pre- catalyst (optionally calcined) that includes rhodium or another metal. A second aspect pertains to a palladium/gold catalyst or precatalyst at is based on a layered support material where one layer of the support materiel is substantially free of catalytic components. A third aspect pertains to a palladium/gold catalyst or precatalysts on a zirconia containing support material. A fourth aspect pertains to a palladium gold catalyst or pre- catalyst that is produced from substantially ...

SHELL CATALYST, PROCESS FOR PREPARATION THEREOF AND USE OF THE SAME.

La présente invention concerne un catalyseur en coquille, un procédé pour sa préparation ainsi que l'utilisation de ce catalyseur en coquille.

ELECTROCHEMICAL CATALYST STRUCTURE, AND METHOD OF FABRICATING SAME

The present invention relates to an electrochemical catalyst structure, and a method of fabricating the same. The electrochemical catalyst structure according to one embodiment of the present invention comprises: a catalyst layer which comprises perovskite-based oxide as an electrochemical oxygen reduction catalyst; and a reforming layer which is in contact with the catalyst layer and contains transition metal oxide capable of chemical interaction with a metal of the perovskite oxide through electron trajectory hybridization. COPYRIGHT KIPO 2018 ...

METHOD FOR PRODUCING YOLK-SHELL NANOCOMPOSITE CONTAINING SHAPE-CONTROLLED METAL NANOPARTICLE AND SHAPE-CONTROLLED METAL NANOPARTICLE-CONTAINING YOLK-SHELL NANOCOMPOSITE CATALYST

The present invention relates to a method for producing a yolk-shell nanocomposite containing shape-controlled metal nanoparticle, and to an application thereof as a catalyst. To this end, the method for producing the yolk-shell nanocomposite comprises the following steps: a first step of preparing shape-controlled nanoparticles; a second step of coating the nanoparticles with silica so as to acquire a nanoparticle yolk-silica shell structure; a third step of coating the nanoparticle yolk-silica shell structure with metal oxide so as to acquire metal oxide-coated nanoparticle yolk-silica shell structure; and a fourth step of removing silica by treating the metal oxide-coated nanoparticle yolk-silica shell structure with a base so as to acquire a nanoparticle yolk-metal oxide shell structure. COPYRIGHT KIPO 2017 ...

Silver catalyst for formaldehyde preparation

The present invention relates to a process for producing coated silver catalysts. The invention further addresses the silver catalysts themselves and the advantageous use thereof in formaldehyde synthesis.

SIO<sb>2</sb>-LAYERED DOUBLE HYDROXIDE MICROSPHERES AND METHODS OF MAKING THEM

Process and catalyst for converting alkanes

Methods and catalysts for producing alcohols, ethers, and/or alkenes from alkanes are provided. More particularly, novel caged, or encapsulated, metal oxide catalysts and processes utilizing such catalysts to convert alkanes to alcohols and/or ethers and to convert alcohols and/or ethers to alkenes are provided.

SELF-CLEANING POLYMERS

The present invention relates to a mixture, comprising at least one thermoplastic polymer as component (A) and at least one photocatalytically active particle, comprising a non-porous core comprising at least one metal oxide or semimetal oxide with a diameter of from 0.1 nm to 1 m, and, at least to some extent surrounding the core, at least one porous outer layer comprising at least one further metal oxide or further semimetal oxide with an average layer thickness of from 0.1 to 10 nm, as component (B), to a process for the production of this mixture according to any of claims 1 to 5, via mixing of components (A) and (B), to the use of the mixture as photocatalytically active surface, to moldings, comprising this mixture, and to the use of this mixture for the production of moldings.

Methods of making alkenyl alkanoates

The present invention addresses at least four different aspects relating to catalyst structure, methods of making those catalysts and methods of using those catalysts for making alkenyl alkanoates. Separately or together in combination, the various aspects of the invention are directed at improving the production of alkenyl alkanoates and VA in particular, including reduction of by-products and improved production efficiency. A first aspect of the present invention pertains to a unique palladium/gold catalyst or pre-catalyst (optionally calcined) that includes rhodium or another metal. A second aspect pertains to a palladium/gold catalyst or pre-catalyst that is based on a layered support material where one layer of the support material is substantially free of catalytic components. A third aspect pertains to a palladium/gold catalyst or pre-catalyst on a zirconia containing support material. A fourth aspect pertains to a palladium/gold catalyst or pre-catalyst that is produced from substantially ...

Methods of producing hydrogen-selective oxygen carrier materials

Embodiments of the present disclosure are directed to methods of producing a hydrogen-selective oxygen carrier material comprising combining one or more core material precursors and one or more shell material precursors to from a precursor mixture and heat-treating the precursor mixture at a treatment temperature to form the hydrogen-selective oxygen carrier material. The treatment temperature is greater than or equal to 100° C. less than the melting point of a shell material, and the hydrogen-selective oxygen carrier material comprises a core comprising a core material and a shell comprising the shell material. The shell material may be in direct contact with at least a majority of an outer surface of the core material.

КАТАЛИЗАТОР И СПОСОБ ПОЛУЧЕНИЯ ЛЕГКИХ ОЛЕФИНОВ НЕПОСРЕДСТВЕННО ИЗ СИНТЕЗ-ГАЗА В РЕЗУЛЬТАТЕ ОСУЩЕСТВЛЕНИЯ ОДНОСТАДИЙНОГО ТЕХНОЛОГИЧЕСКОГО ПРОЦЕССА

СОДЕРЖАЩИЕ РОДИЙ КАТАЛИЗАТОРЫ ДЛЯ ОБРАБОТКИ АВТОМОБИЛЬНЫХ ВЫХЛОПОВ

СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРА ИЛИ ПРОКАТАЛИЗАТОРА, СОДЕРЖАЩЕГО ДИОКСИД ЦИРКОНИЯ, КАТАЛИТИЧЕСКАЯ КОМПОЗИЦИЯ И СПОСОБ ПОЛУЧЕНИЯ АЛКЕНИЛАЛКАНОАТОВ С ИСПОЛЬЗОВАНИЕМ ТАКОЙ КОМПОЗИЦИИ

... 1. Способ получения катализатора или прокатализатора, подходящих для содействия получению алкенилалканоатов, включающий:введение палладий- и золотосодержащих предшественников в контакт с материалом носителя, содержащим диоксид циркония причем материал носителя, содержащий диоксид циркония, обладает площадью удельной поверхности по БЭТ между примерно 10 м/г до примерно 135 м/г;необязательно стадию фиксации с использованием фиксирующего вещества; ивосстановление, по меньшей мере, палладийсодержащего предшественника в результате введения восстанавливающей среды в контакт с материалом носителя, содержащим диоксид циркония.2. Способ по п.1, где материал носителя, содержащий диоксид циркония, характеризуется площадью удельной поверхности в диапазоне от приблизительно 10 м/г до приблизительно 60 м/г согласно измерениям по методу БЭТ.3. Способ по п.2, где материал носителя, содержащий диоксид циркония, характеризуется площадью удельной поверхности по методу БЭТ в диапазоне от приблизительно 37 ...

Verwendung von mit bimetallischen oder trimetallischen Partikeln dotierten Hohlzeoliten für Kohlenwasserstoff-Reformingreaktionen

Katalysatoren, die für Kohlenwasserstoff-Reformingreaktionen nützlich sind, werden beschrieben. Ein Katalysator kann eine bimetallische (MM) oder trimetallische (MMM) Nanostruktur, oder Oxide davon, und einen Hohlzeolitträger einschließen. Der Hohlraum in dem Zeolitträger schließt die bimetallische (MM) oder trimetallische (MMM) Nanostruktur, oder Oxide davon, ein.

METHODS OF PRODUCING HYDROGEN-SELECTIVE OXYGEN CARRIER MATERIALS

Embodiments of the present disclosure are directed to methods of producing a hydrogen- selective oxygen carrier material comprising combining one or more core material precursors and one or more shell material precursors to from a precursor mixture and heat-treating the precursor mixture at a treatment temperature to form the hydrogen-selective oxygen carrier material. The treatment temperature is greater than or equal to 100 °C less than the melting point of a shell material, and the hydrogen- selective oxygen carrier material comprises a core comprising a core material and a shell comprising the shell material. The shell material may be in direct contact with at least a majority of an outer surface of the core material.

RHODIUM-CONTAINING CATALYSTS FOR AUTOMOTIVE EMISSIONS TREATMENT

Catalytic materials, and in particular, rhodium-containing catalytic materials for exhaust gas purifying catalyst composites are provided herein. Such materials comprise multimetallic Rh-containing nanoparticles, which are present primarily inside aggregated particles of a support (such as alumina). Such catalytic materials can exhibit excellent conversion of hydrocarbons and nitrogen oxides.

HIGHLY SINTER-STABLE METAL NANOPARTICLES SUPPORTED ON MESOPOROUS GRAPHITIC PARTICLES AND THEIR USE

The present invention refers to highly sinter-stable metal nanoparticles supported on mesoporous graphitic spheres, the so obtained metal-loaded mesoporous graphitic particles, processes for their preparation and the use thereof as catalysts, in particular for high temperature reactions in reducing atmosphere and cathode side oxygen reduction reaction (ORR) in PEM fuel cells.

ПРОЦЕСС ИЗГОТОВЛЕНИЯ КАТАЛИЗАТОРА ИЛИ ПРЕДКАТАЛИЗАТОРА, ПРИГОДНОГО ДЛЯ ПОЛУЧЕНИЯ АЛКЕНИЛАЛКАНОАТОВ, КОМПОЗИЦИЯ КАТАЛИЗАТОРА ИЛИ ПРЕДКАТАЛИЗАТОРА ДЛЯ АЛКЕНИЛАЛКАНОАТОВ И ПРОЦЕСС ПОЛУЧЕНИЯ АЛКЕНИЛАЛКАНОАТОВ

Данное изобретение относится к технологии производства катализаторов, в частности, структуре катализатора, процессу изготовления таких катализаторов и способам применения таких катализаторов для получения алкенилалканоатов. Изобретение направлено на усовершенствование получения алкенилалканоатов и, особенно, винилацетата, в том числе уменьшение количества побочных продуктов и повышение эффективности производства. Катализатор или предкатализатор, включающий палладий/золото (необязательно обожженный) и родий или иной металл. Катализатор или передкатализатор, включающий палладий / золото, нанесен на слоистый материал основы, где один слой материала основы является в значительной мере свободным от каталитических компонентов. Катализатор или предкатализатор, содержащий палладий/золото на материале основы, содержащей диоксид циркония. Катализатор или предкатализатор, содержащий палладий/золото, получен из каталитических компонентов, в значительной степени свободных от хлоридов.

ПРОЦЕСС ИЗГОТОВЛЕНИЯ КАТАЛИЗАТОРА ИЛИ ПРЕДКАТАЛИЗАТОРА, ПРИГОДНОГО ДЛЯ ПОЛУЧЕНИЯ АЛКЕНИЛАЛКАНОАТОВ, КОМПОЗИЦИЯ КАТАЛИЗАТОРА ИЛИ ПРЕДКАТАЛИЗАТОРА ДЛЯ ПОЛУЧЕНИЯ АЛКЕНИЛАЛКАНОАТОВ И ПРОЦЕСС ПОЛУЧЕНИЯ АЛКЕНИЛАЛКАНОАТОВ

Настоящее изобретение относится к технологии производства катализаторов, в частности, структуре катализатора или предкатализатора, процессу изготовления таких катализаторов или предкатализаторов и процессам применения таких катализаторов или предкатализаторов для получения алкенилалканоатов. Изобретение направлено на совершенствование получения алкенилалканоатов и особенно винилацетата, в том числе уменьшение количества побочных продуктов и улучшение эффективности производства. Катализатор или предкатализатор палладий/золото (необязательно обожженный), который включает родий или другой металл. Катализатор или предкатализатор, включающий палладий/золото, нанесен на слоистый материал основы, где один слой материала основы является в значительной мере свободным от каталитических компонентов. Катализатор или предкатализатор, включающий палладий/золото на материале основы, содержащем диоксид циркония с площадью поверхности БЭТ от примерно 10 до примерно 135 м2/г. Катализатор или предкатализатор ...

A halide free precursors for catalysts

Silver catalyst for formaldehyde preparation

... 본 발명은 피복된 은 촉매의 제조 방법에 관한 것이다. 본 발명은 추가로 은 촉매 자체, 및 포름알데히드 합성에서 이의 유리한 용도를 제기한다.

CORE-SHELL COBALT CATALYSTS FOR FISCHER-TROPSCH SYNTHESIS REACTION AND PREPARING METHOD THEREOF

The present invention relates to a cobalt catalyst having a core-shell structure applied to a Fischer-Tropsch synthesis reaction and a process for producing the same. More particularly, the present invention relates to a cobalt catalyst having alumina particles calcined after the cobalt- The surface of the alumina particles has a core-shell structure in which a zeolite powder is coated with a thickness of 50 탆 or more through a mechanical alloying process to form a shell, and in a Fischer-Tropsch synthesis reaction, a hydrocarbon having a high octane number To a cobalt catalyst and a process for producing the same.

catalisador de prata a preparação de formaldeído

EFFICIENT HYDROGEN PRODUCTION BY PHOTOCATALYTIC WATER SPLITTING USING SURFACE PLASMONS IN HYBRID NANOPARTICLES

Photocatalytic water splitting is employed as a method to directly obtain clean hydrogen from solar radiation by using hybrid nanoparticles with metallic cores and semiconductor photocatalytic shells. Efficient unassisted overall photocatalytic splitting of water is based on resonant absorption from surface plasmon in metal core/semiconductor shell hybrid nanoparticles, which can extend the absorption spectra further towards the visible-near infrared range, thus dramatically increasing the solar energy conversion efficiency. When used in combination with scintillator nanoparticles, the hybrid photocatalytic nanoparticles can be used for conversion of nuclear energy into hydrogen.

Fuel synthesis catalyst and fuel synthesis system

A fuel synthesis catalyst of an embodiment for hydrogenating a gas includes at least one selected from the group consisting of; carbon dioxide and carbon monoxide, the catalyst comprising, an oxide base material containing at least one oxide selected from the group consisting of; Al2O3, MgO, TiO2, and SiO2, first metal particles containing at least one metal selected from the group consisting of; Ni, Co, Fe, and Cu and brought into contact with the oxide base material, and a porous oxide layer containing at least one selected from the group consisting of; CeO2, ZrO2, TiO2, and SiO2 and having an interface with each of the first metal particles and the oxide base material.

CO oxidation promoters for use in FCC processes

A composition for promoting the oxidation of CO and minimizing NOx emissions during FCC processes comprises (i) acidic oxide support, (ii) at least one precious metal for promoting CO oxidation, and (iii) metals or metal oxides capable of reducing NOx production during CO oxidation, at least one precious metal (ii) being primarily distributed in the central interior of particulate additive and the metals or metal oxides (iii) being primarily distributed in the particulate additive as a shell around the precious metal.

METHOD OF PRODUCING PROPYLENE AND ETHYLENE WITH A CORE-SHELL ZSM CATALYST

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided. 1: A method of producing propylene and ethylene from a butene-containing hydrocarbon stream , comprising:contacting the butene-containing hydrocarbon stream with a core-shell ZSM catalyst to form a product stream comprising propylene and ethylene, a ZSM-5 core, and', 'a silica shell having a thickness in the range of 0.5 to 50 μm, which covers at least a portion of a surface of the ZSM-5 core., 'wherein the core-shell ZSM catalyst comprises2: The method of claim 1 , wherein the silica shell has a thickness in the range of 0.5 to 30 μm.3: The method of claim 1 , wherein the core-shell ZSM catalyst is dispersed in a silica and/or an alumina binder.4: The method of claim 1 , wherein a weight percent of the silica shell in the core-shell ZSM catalyst is within the range of 4 to 75 wt % claim 1 , with the weight percent being relative to the total weight of the core-shell ZSM catalyst.5: The method of claim 1 , wherein the core-shell ZSM catalyst has an acidity of less than 0.1 mmol/g.6: The method of claim 1 , wherein at least 50 wt % of the product stream is propylene and ethylene.7: The method of claim 1 , wherein a propylene-to-ethylene weight ratio of the product stream is within the range of 0.2 to 4.8: The method of claim 1 , further comprising:treating the core-shell ZSM catalyst with nitrogen at a temperature in the range of 400 to 700° C. prior to the contacting.9: The method of claim 1 , further comprising:mixing the butene-containing hydrocarbon stream with nitrogen to form a gaseous mixture prior to the contacting, ...

CATALYST FOR OXIDATION REACTIONS IN THE PRESENCE OF HYDROGEN CHLORIDE AND/OR CHLORINE AND METHOD FOR THE PRODUCTION THEREOF, AND THE USE THEREOF

Thermally stable catalyst for heterogeneously catalyzed oxidation in the presence of hydrogen chloride and/or chlorine, comprising nanoparticulate core of a ruthenium compound with surrounding gas- and liquid-pervious shell of zirconium oxide or titanium oxide.

Method of making and separating a propylene/ethylene mixture from butene

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided.

КАТАЛИЗАТОР И СПОСОБ ПОЛУЧЕНИЯ ЛЕГКИХ ОЛЕФИНОВ НЕПОСРЕДСТВЕННО ИЗ СИНТЕЗ-ГАЗА В РЕЗУЛЬТАТЕ ОСУЩЕСТВЛЕНИЯ ОДНОСТАДИЙНОГО ТЕХНОЛОГИЧЕСКОГО ПРОЦЕССА

FIELD: chemistry. SUBSTANCE: invention describes a synthesis gas conversion catalyst in which the catalyst is a composite material made from multicomponent metal-containing composites and inorganic solid acids having a hierarchical pore structure including micropores, mesopores and macropores; metal-containing composites are dispersed on surfaces or in porous channels of inorganic solid acid; inorganic solid acid is selected from acid based on silicon-aluminum and acid based on silicon-phosphorus-aluminium; metal in a multicomponent metal-containing composite is selected from a group consisting of Zn, Pd, Zr, Fe, Mg, K, Cu, Ga, Ge, Ca, Mn, Al, Ce, La, Cr, Co, Ti, Mo, Vo, In and mixtures thereof; content of multicomponent metal-containing composites in the catalyst ranges from 10 wt. % up to 75 wt. % of total catalyst weight (100 %); said inorganic solid acid, having a hierarchical pore structure, is formed from secondary particles of inorganic solid acid; size of secondary particles of inorganic solid acid ranges from 100 nm to 500 mcm; said secondary particles of inorganic solid acid are formed by arranging particles of inorganic solid acid crystals having a size in range of 5 to 200 nm; said secondary inorganic solid acid particles have a three-dimensional hierarchical structure of porous channels including three types of porous channels in the form of primary pores, secondary pores and tertiary pores; said primary pores are microporous channels having a diameter of less than 2 nm; micropores are located in crystals of inorganic solid acid crystals; said secondary pores are mesopore channels having a diameter in range of 2 nm to 50 nm; secondary pores are formed with assembled crystals of inorganic solid acid; secondary pores are located in secondary particles of inorganic solid acid and in walls of pores of tertiary pores; said tertiary pores are macroporous channels characterized by distribution over diameters of more than 50 nm; tertiary pores are formed by ...

Patent RU2018103755A3

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 103 755 A (51) МПК B01J 35/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018103755, 16.10.2015 (71) Заявитель(и): ДАЛЯНЬ ИНСТИТЬЮТ ОФ КЕМИКАЛ ФИЗИКС, ЧАЙНИЗ АКАДЕМИ ОФ САЙЕНСЕЗ (CN) Приоритет(ы): (30) Конвенционный приоритет: 02.07.2015 CN 201510387209.2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 02.02.2018 (86) Заявка PCT: (72) Автор(ы): ПАНЬ Сюлянь (CN), ЛИ Цзиньцзин (CN), ЦЗЯО Фэн (CN), БАО Синхэ (CN) (87) Публикация заявки PCT: WO 2017/000427 (05.01.2017) R U (54) КАТАЛИЗАТОР И СПОСОБ ПОЛУЧЕНИЯ ЛЕГКИХ ОЛЕФИНОВ НЕПОСРЕДСТВЕННО ИЗ СИНТЕЗ-ГАЗА В РЕЗУЛЬТАТЕ ОСУЩЕСТВЛЕНИЯ ОДНОСТАДИЙНОГО ТЕХНОЛОГИЧЕСКОГО ПРОЦЕССА (57) Формула изобретения 1. Катализатор, в котором катализатор представляет собой композитный материал, выполненный из многокомпонентных металлсодержащих композитов и неорганических твердых кислот, обладающих иерархической структурой пор, включающей микропоры, мезопоры и макропоры; металлсодержащие композиты диспергированы на поверхностях или в поровых каналах неорганической твердой кислоты; содержание многокомпонентных металлсодержащих композитов в катализаторе находится в диапазоне от 10% масс. до 75% масс. от совокупной массы (100%) катализатора, и предпочтительно от 25% масс. до 75% масс.; упомянутая неорганическая твердая кислота, обладающая иерархической структурой пор, образована из вторичных частиц неорганической твердой кислоты; размер вторичных частиц неорганической твердой кислоты находится в диапазоне от 100 нм до 500 мкм, и предпочтительно от 150 нм до 100 мкм; упомянутые вторичные частицы неорганической твердой кислоты сформированы компонованием частиц кристаллов неорганической твердой кислоты, имеющих размер в диапазоне от 5 до 200 нм (предпочтительно от 20 нм до 120 нм); упомянутые вторичные частицы неорганической твердой кислоты обладают Стр.: 1 A 2 0 1 8 1 0 3 7 5 5 A Адрес для переписки: 129090, Москва, ул. Б. ...

Verfahren zur Herstellung eines Kompositmaterials, Kompositmaterial und dessen Verwendung

Verfahren zur Herstellung eines Kompositmaterials enthaltend ein Trägermaterial in Form eines Formkörpers und eine ionische Flüssigkeit, dadurch gekennzeichnet, dass der Formkörper mit einer ionischen Flüssigkeit beschichtet wird, indem eine Lösung, Suspension oder Emulsion, die die ionische Flüssigkeit enthält, durch Sprühimprägnierung auf den in einer Wirbelschicht oder in einem Fließbett fluidisierten Formkörper aufgebracht wird. A method for producing a composite material comprising a carrier material in the form of a shaped article and an ionic liquid, characterized in that the shaped article is coated with an ionic liquid by a solution, suspension or emulsion containing the ionic liquid, by spray impregnation on in a Fluidized bed or in a fluidized bed fluidized molded body is applied.

Microencapsulated catalyst

HALIDE FREE PRECURSORS FOR CATALYSTS

The present invention addresses at least four different aspects relating to catalyst structure, methods of making those catalysts and methods of using those catalysts for making alkenyl alkanoates. Separately or together in combination, the various aspects of the invention are directed at improving the production of alkenyl alkanoates and VA in particular, including reduction of by-products and improved production efficiency. A first aspect of the present invention pertains to a unique palladium/gold catalyst or pre-catalyst (optionally calcined) that includes rhodium or another metal. A second aspect pertains to a palladium/gold catalyst or pre~catalyst that is based on a layered support material where one layer of the support material is substantially free of catalytic components. A third aspect pertains to a palladium/gold catalyst or pre-catalyst on a zirconia containing support material. A fourth aspect pertains to a palladium/gold catalyst or pre- catalyst that is produced from substantially ...

HYDROGEN-SELECTIVE OXYGEN CARRIER MATERIALS AND METHODS OF USE

Embodiments of the present disclosure are directed to hydrogen-selective oxygen carrier materials and methods of using hydrogen-selective oxygen carrier materials. The hydrogen-selective oxygen carrier material may comprise a core material, which includes a redox-active transition metal oxide; a shell material, which includes one or more alkali transition metal oxides; and a support material. The shell material may be in direct contact with at least a majority of an outer surface of the core material. At least a portion of the core material may be in direct contact with the support material. The hydrogen-selective oxygen carrier material may be selective to combust hydrogen in an environment that includes hydrogen and hydrocarbons.

USE OF MESOPOROUS GRAPHITE PARTICLES FOR ELECTROCHEMICAL APPLICATIONS

The present invention relates to the use of mesoporous graphite particles loaded with sinter-stable metal nanoparticles for fuel cells and other electrochemical applications, such as for use as a component of layers for electrodes of fuel cells and batteries.

Preparation method of thin-wall GC (graphitized carbon)-encapsulated metal core-shell structured material

Method for preparing core-shell type VPO@SiO2 catalyst

CATALYST COMPRISING A POROUS CORE AND A PERIPHERAL LAYER POROSITY DISTINCT AND METHOD OF HYDROTREATING HEAVY CUTS USING THE CATALYST

A Photocatalyst For Water Splitting

Methods of synthesizing nano-sized tungsten particles by sol-gel process and method of preparing light oil from extra-heavy oil using the synthesized nano-sized tungsten particles

Disclosed is a method of synthesizing nano-sized tungsten-silica core-shell particles by a silica-based sol-gel process. According to the method, tungsten-silica nanoparticles are very easy to synthesize by a simple process at ambient pressure and temperature. In addition, tungsten oxide-silica (WOx@SiO2) nanoparticles including tungsten in a stable oxidation state can be synthesized. In the tungsten oxide-silica nanoparticles, the size of the tungsten protected with the silica shell can be maintained in the nanometer range without further processing. Also disclosed is a method of synthesizing nano-sized tungsten oxide (WOx) and tungsten carbide (WC) particles by further processing of the tungsten-silica core-shell particles.

A COMPOSITION FOR SCR CATALYSTS

КОБАЛЬТОВЫЙ НАНОКАТАЛИЗАТОР СИНТЕЗА ФИШЕРА-ТРОПША, ЛОКАЛИЗОВАННЫЙ В ПОРИСТОМ МАТЕРИЛЕ, И СПОСОБ ЕГО ПОЛУЧЕНИЯ

... 1. Кобальтовый нанокатализатор синтеза Фишера-Тропша, локализованный в пористом материале, отличающийся тем, что:катализатор получен золь-гель процессом с использованием органогеля в качестве матрицы;катализатор представляет собой металлический компонент в качестве ядра и пористый материал в качестве оболочки;при этом металлический компонент включает: первый металлический компонент в виде Co, второй металлический компонент, выбираемый из Ce, La и Zr, и третий металлический компонент, выбираемый из Pt, Ru, Rh и Re;готовый катализатор содержит: первый металлический компонент - 10-35% мас., второй металлический компонент - 0,5-10% мас., третий металлический компонент - 0,02-2% мас., и носитель;где носитель является пористым материалом, компонентом которого является нанокремнезем или нанооксид алюминия, причем пористый материал имеет форму сфероида, размер пор 1-20 нм и удельную поверхность 300-500 м/г; иактивный компонент имеет размер частиц 0,5-20 нм.2. Катализатор по п. 1, отличающийся тем ...

НЕ СОДЕРЖАЩИЕ ГАЛОГЕНИДОВ ПРЕДШЕСТВЕННИКИ КАТАЛИЗАТОРОВ

... 1. Способ получения катализатора или прокатализатора, подходящих для содействия получению алкенилалканоатов включающий введение, по меньшей мере, одного раствора предшественника каталитического компонента, содержащего палладий и золото, в контакт с материалом носителя, где, по меньшей мере, одним раствором предшественника каталитического компонента является водный раствор, который содержит одного или нескольких представителей, выбираемых из Pd(NH3)2(NO2)2/Pd(NH3)4(ОН)2, Pd(NH3)4(NO3)2, Pd(NO3)2, Pd(NH3)4(OAc)2, Pd(NH3)2(OAc)2, Pd(NH3)4(НСО3)2, оксалата палладия, KAuO2, NaAuO2, NMe4AuO2, HAu(NO3)4 в азотной кислоте или их комбинаций, и восстановление палладия или золота в результате введения восстанавливающей среды в контакт с материалом носителя. 2. Способ по п.1, где материал носителя содержит диоксид кремния, оксид алюминия, диоксид кремния-оксид алюминия, диоксид титана, диоксид циркония, диоксид ниобия, силикаты, алюмосиликаты, титанаты, шпинель, карбид кремния, нитрид кремния, углерод ...

KATALYSATOREN MIT ATOMAR DISPERGIERTEN PLATINGRUPPENKOMPLEXEN UND EINER ZWISCHEN DEN KOMPLEXEN ANGEORDNETEN BARRIERE

Ein Abgaskatalysator beinhaltet einen Katalysator. Der Katalysator beinhaltet einen Metalloxidträger und Platingruppenmetall (PGM)-Komplexe, die atomar auf dem Metalloxidträger dispergiert sind. Die PGM-Komplexe beinhalten eine PGM-Spezies, ausgewählt aus der Gruppe, bestehend aus einem Atom der Platinmetallgruppe, einem Cluster, der zwischen 2 Atomen und weniger als 10 Atomen eines Platingruppenmetalls, ein Nanopartikel, das 10 oder mehr Atome des Platingruppenmetalls enthält, und Kombinationen davon. Ein Alkalimetall oder ein Erdalkalimetall ist an die PGM-Spezies gebunden. Das Alkalimetall oder Erdalkalimetall ist Teil einer Struktur, die Sauerstoffatome und Wasserstoffatome enthält. Zwischen einem ersten PGM-Komplex und einem zweiten PGM-Komplex wird eine Barriere angeordnet.

Supramolecular capsules

Halide free precursors for catalysts

HALIDE FREE PRECURSORS FOR CATALYSTS

The present invention addresses at least four different aspects relating to catalyst structure, methods of making those catalysts and methods of using those catalysts for making alkenyl alkanoates. Separately or together in combination, the various aspects of the invention are directed at improving the production of alkenyl alkanoates and VA in particular, including reduction of by-products and improved production efficiency. A first aspect of the present invention pertains to a unique palladium/gold catalyst or pre-catalyst (optionally calcined) that includes rhodium or another metal. A second aspect pertains to a palladium/gold catalyst or pre~catalyst that is based on a layered support material where one layer of the support material is substantially free of catalytic components. A third aspect pertains to a palladium/gold catalyst or pre-catalyst on a zirconia containing support material. A fourth aspect pertains to a palladium/gold catalyst or pre- catalyst that is produced from substantially ...

RUTHENIUM-BASED CATALYST FOR AMMONIA SYNTHESIS AND PREPARATION METHOD AND USE THEREOF

ABSTRACT Disclosed is a ruthenium-based catalyst for ammonia synthesis, preparation method and use thereof. The ruthenium-based catalyst comprises Ru-Ba-A core-shell structure which comprises a ruthenium nanoparticle as a core covered with a first shell and a second shell sequentially, wherein the first shell consists of a barium nanoparticle, and the second shell consists of a metal oxide. The Ru-Ba-A core-shell structure can effectively preventing agglomerations of ruthenium nanoparticles during the use of the catalyst and avoiding direct contact between the ruthenium nanoparticles and the metal oxides. In addition, barium nanoparticles have a promoting effect as an electronic promoter, which can effectively improve the stability and catalytic activity of ruthenium-based catalyst for ammonia synthesis, especially in the system for synthesizing ammonia from a coal gas. CA 3075797 2020-03-16 ...

SHELL CATALYST, PREPARATION METHOD AND USE OF THIS CATALYST.

La présente invention concerne un catalyseur en coquille, un procédé pour sa préparation ainsi que l'utilisation de ce catalyseur en coquille. The present invention relates to a shell catalyst, a process for its preparation as well as the use of this shell catalyst.

SYNTHESIS METHOD OF METAL CATALYST HAVING CARBON SHELL USING METAL-ANILINE METAL COMPLEX

The present invention relates to a synthesis method of a metal catalyst having a carbon shell. More specifically, the present invention relates to the synthesis method of a metal catalyst having a carbon shell using a metal-aniline metal complex, the synthesis method which is capable of synthesizing a high durability catalyst of a structure having a metal surrounded by the carbon shell in a reactor without using a separate chemical additive through a very simple process, and is capable of coating the carbon shell on the metal selectively and evenly by mixing a pure aniline monomer of a liquid state with a metal precursor to form a metal-aniline metal complex, injecting a catalyst support into the metal-aniline metal complex, performing an ultrasonic radiation treatment process of the catalyst support injected into the metal-aniline metal complex to support the metal complex onto the support, and carbonizing an aniline portion of the metal complex through heat treatment. The catalyst synthesized by the synthesis method according to the present invention can be applied to various fields requiring the high durability catalyst by increasing durability due to the carbon shell compared to a general metal catalyst, and particularly can be very suitably used as a catalyst of a low temperature driving fuel cell such as a proton exchange membrane fuel cell (PEMFC) by using a metal that is applicable to fuel cells.

요크-쉘 입자, 촉매 및 이의 제조방법

... 본 명세서는 요크-쉘 입자, 촉매 및 이의 제조방법에 관한 것이다.

비귀금속 나노입자 제조용 속빈 나노 래틀 입자 및 이를 이용한 나노입자의 제조방법

The present invention relates to hollow nanorottle particles suitable for the production of nanoparticles based on noble metals or alloys thereof and to a method for producing nanoparticles by seed-engineering therewith. The nano-ruttle particles comprising the porous silica nanocomposite of the present invention and the gold nanocrystals trapped in the pores of the present invention can be easily and easily prepared using hybrid nanocrystals, and can be produced not only from nickel but also from alloys of nickel and other metals And can be used as a nanoreactor for the production of nanoparticles containing various metal cores and porous silica shells of a predetermined size, and the produced nanoparticles can also be post-modified. In addition, the nanoparticles containing the noble metal core and the porous silica shell of the present invention can form stable colloids in an aqueous medium, are stable under harsh conditions, and reacted molecules can easily approach the active metal core, . &Lt; / RTI &gt;

파라-크실렌의 제조 방법 및 촉매

... 이중 기능 촉매계를 사용하여 메탄올에 의한 톨루엔 및/또는 벤젠 메틸화를 통해 파라-크실렌을 제조하는 유동상 방법. 제1 촉매는 톨루엔 및/또는 벤젠 메틸화를 달성하고, 제2 촉매는 메틸화 반응의 부산물 또는 미전환 메틸화제를 전환시키거나, 원하는 생성물의 수율을 개선하거나, 이의 조합을 달성한다. 제2 촉매의 포함은 C1-C5 비방향족 분획을 50% 이상 억제하고 방향족의 형성을 유의적으로 증가시킬 수 있다.

ZEOLITE COMPOSITIONS AND PREPARATION AND USE THEREOF

This invention relates to novel compositions of zeolites or microporous metallosilicates characterised by a continuous spatial distribution of the metal and silicon in the crystals and characterised by a crystal surface enriched in silicon relative to the internal part of the same crystals. This invention also relates to a synthesis method of producing these metallosilicates with spatial distribution of the constituting elements. These novel zeolitic compositions can be used in various hydrocarbon conversion reactions. The crystalline metallosilicates can be selected from the group consisting of aluminosilicates, gallosilicates, ferrosilicates, titanosilicates and borosilicates.

Method for cracking butene

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided.

Method for making a catalyst and cracking a hydrocarbon stream to form propylene/ethylene

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided.

Multistage Nanoreactor Catalyst and Preparation and Application Thereof

The present disclosure discloses a multistage nanoreactor catalyst and preparation and application thereof, belonging to the technical field of synthesis gas conversion. The catalyst consists of a core of an iron-based Fischer-Tropsch catalyst, a transition layer of a porous oxide or porous carbon material, and a shell layer of a molecular sieve having an aromatization function. The molecular sieve of the shell layer can be further modified by a metal element or a non-metal element, and the outer surface of the molecular sieve is further modified by a silicon-oxygen compound to adjust the acidic site on the outer surface and the aperture of the molecular sieve, thereby inhibiting the formation of heavy aromatic hydrocarbons. According to the disclosure, the shell layer molecular sieve with a transition layer and a shell layer containing or not containing auxiliaries, and with or without surface modification can be prepared by the iron-based Fischer-Tropsch catalyst through multiple steps ...

НЕ СОДЕРЖАЩИЕ ГАЛОГЕНИДОВ ПРЕДШЕСТВЕННИКИ КАТАЛИЗАТОРОВ

Настоящее изобретение относится к способу получения катализатора или прокатализатора, подходящих для содействия получению алкенилалканоатов, к каталитической композиции для получения алкенилалканоатов и к способу получения алкенилалканоатов. Описан способ получения катализатора или прокатализатора, включающий введение, по меньшей мере, одного раствора предшественника каталитического компонента, содержащего палладий и золото, в контакт с материалом носителя, где, по меньшей мере, одним раствором предшественника каталитического компонента является водный раствор, который содержит одного или нескольких представителей, выбираемых из Pd(NH3)2(NO2)3, Pd(NH3)4(OH)2, Pd(NH3)4(NO3)2, Pd(NH3)4(OAc)2, Pd(NH3)2(OAc)2, Pd(NH3)4(HCO3)2, и из NaAuO2, KAuO2, NMe4AuO2, HAu(NO3)4 в азотной кислоте или их комбинаций и восстановления палладия или золота в результате введения восстанавливающей среды в контакт с материалом носителя. Описана каталитическая композиция, содержащая материал носителя, содержащий ...

МАТЕРИАЛ НОСИТЕЛЯ ДЛЯ КАТАЛИЗАТОРОВ, СОДЕРЖАЩИЙ ДИОКСИД ЦИРКОНИЯ

... 1. Способ получения катализатора или прокатализатора, подходящих для содействия получению алкенилалканоатов, включающий введение палладий- и золотосодержащих предшественников в контакт с материалом носителя, содержащим диоксид циркония и по существу состоящим из диоксида циркония, и восстановление, по меньшей мере, палладийсодержащего предшественника в результате введения восстанавливающей среды в контакт с материалом носителя, содержащим диоксид циркония. 2. Способ по п.1, где материал носителя, содержащий диоксид циркония, характеризуется площадью удельной поверхности в диапазоне от приблизительно 5 м2/г до приблизительно 300 м2/г согласно измерениям по методу БЭТ. 3. Способ либо по п.1, либо по п.2, где материал носителя, содержащий диоксид циркония, характеризуется размером частиц в диапазоне от 5 мкм до приблизительно 10 мм. 4. Способ по любому из пп.1 и 2, дополнительно включающий прокаливание введенного в контакт материала носителя, содержащего диоксид циркония, в невосстанавливающей ...

ФОРМОВАННЫЕ ПОРИСТЫЕ ПРОДУКТЫ НА ОСНОВЕ УГЛЕРОДНОЙ САЖИ

Katalysatorpartikel mit einer schichtförmig aufgebauten Kern-Schale-Schale-Struktur und Verfahren zu ihrer Herstellung

Katalysatorpartikel umfassend eine schichtförmig aufgebaute Kern-Schale-Schale-Struktur gemäß der allgemeinen Formel (1) NM/ZS/EM(1)in der – NM ein Nichtedelmetallkern des Partikels ist, – EM ein Edelmetall ist, das die äußere Schale bildet, – ZS eine Zwischenschicht zwischen dem Nichtedelmetallkern und der äußeren Edelmetallschale ist, die eine Nichtedelmetall/Edelmetall-Legierung der Zusammensetzung (NM)x(EM)y (worin x und y Atomverhältnisse sind mit x = 0,99 bis 0,01 und y = 0,01 bis 0,99; x + y = 1), wobei das Atomverhältnis von Nichtedelmetall (NM) zu Edelmetall (EM) in der Zwischenschicht (ZS) vom Nichtedelmetallkern in Richtung des die äußere Schale bildenden Edelmetalls (EM) allmählich abnimmt.

Composition

A catalyst for furfural selective hydrogenation

Preparation of a catalyst for selective hydrogenation of biomass, comprising: S1: 9-(3,5-dicarboxylic acid-benzyl)-9H-carbazole-3,6-dicarboxylic acid (H4DCDC) is dissolved in a mixed solvent of DMA/EtOH/H2O to obtain a solution; S2: cupric nitrate is dissolved in the mixed solvent and then the solution obtained in S1 is added slowly, after ultrasonication for 5-10mins the temperature is raised to 120-160ºC, reacted for 24-48h and then cooled to room temperature; S3: solids are filtered and washed with ethanol, and naturally dried for 12-20h at room temperature to obtain a Cu-MOF. An additional step, S4, can also be performed, wherein the solid obtained in S3 is calcined under an oxygen atmosphere, such as an oxygen-nitrogen mixture with an oxygen content of 0.5-20% and flow velocity of 80-120mL/min, to obtain the catalyst. Preferably the molar ratio of the H4DCDC and cupric nitrate is 1-2:1.5-2 and volume ratio of the mixed solvent of DMA/EtOH/H2O is 1:1:1. The calcination heating rate ...

Halide free precursors for catalysts

Monodispersed iron-based catalyst for Fischer-Tropsch process, preparation method therefor and use thereof

Disclose are a monodispersed iron-based catalyst for the Fischer-Tropsch process, a preparation method therefor and the use thereof. The catalyst comprises a carrier, i.e. silicon dioxide and an active component, i.e. iron. The carrier, i.e. silicon dioxide has a mesoporous spherical particle structure, and the carrier, i.e. silicon dioxide covers the active component, i.e. iron. The active component, i.e. iron is of a nanoparticle shape and is distributed uniformly. The particle size of the carrier, i.e. silicon dioxide particle is 140 - 160 nm. In the preparation method therefor, the pressure of CO ...

CATALYST PREPARATION

Process for the preparation of a metal-containing supported catalyst wherein the concentration of at least one metal or metal compound is considerably lower in the outer layer of the catalyst than in the inner portion of the catalyst, comprising contacting an aqueous solution of an appropriate metal compound with a reducing agent or an oxidizing agent resulting in a redox reaction either (a) generating hydrogen ions during contact with a basic reacting preshaped support, or (b) generating hydroxyl ions during contact with an acidic reacting preshaped support. The resulting catalyst, which may have an egg-shell or an egg-yolk type distribution for the catalytically active component, may conveniently be employed in processes wherein it is preferred that the catalytically active component is present in a selected part of the shaped support. They may be used, for example, in diffusion limited processes as well as in processes wherein the feedstock may contain catalyst poisons, e.g. in residue ...

ZEOLITE COMPOSITIONS AND PREPARATION AND USE THEREOF

BIFUNCTIONAL CATALYST

A bifunctional catalyst for conversion of oxygenates, said catalyst comprising zeolite, alumina binder and Zn, wherein the Zn is present at least partly as ZnAl2O4.

ZEOLITE COMPOSITIONS AND PREPARATION AND USE THEREOF

... ²²²This invention relates to novel compositions of zeolites or microporous ²metallosilicates characterised by a continuous spatial distribution of the ²metal and silicon in the crystals and characterised by a crystal surface ²enriched in silicon relative to the internal part of the same crystals. This ²invention also relates to a synthesis method of producing these ²metallosilicates with spatial distribution of the constituting elements. These ²novel zeolitic compositions can be used in various hydrocarbon conversion ²reactions. The crystalline metallosilicates can be selected from the group ²consisting of aluminosilicates, gallosilicates, ferrosilicates, ²titanosilicates and borosilicates.² ...

HOLLOW NANOREACTOR COMPRISING NOBLE METAL CATALYSTS AND SUPPORT AND MANUFACTURING METHOD THEREOF

The present invention relates to a hollow nanoreactor and a method for manufacturing the same. More specifically, the present invention relates to a method for manufacturing a hollow nanoreactor by forming a manganese oxide support shell formed on an inner surface of an outer silica shell of the hollow nanoreactor into noble metal particles by using a dual galvanic substitution reaction and replacing the support with a cerium oxide support. On the inner surface of the silica shell, the cerium oxide support having small noble metals spread evenly is formed. The manufactured hollow silica nanoreactor can be used as a catalyst for carbon monoxide removal having excellent oxidation reaction of carbon monoxide due to the synergy effect between noble metal/cerium (IV) oxide. COPYRIGHT KIPO 2019 ...

COMPOSITE HOLLOW SPHERE AND PRODUCTION METHOD THEREOF

The present invention relates to a composite hollow sphere and a production method thereof. The composite hollow sphere comprises: a hollow sphere having a core structure consisting of a shell formed by assembling first metal oxide nanoparticles and an empty space; a wrapping layer surrounding an outer surface of the hollow sphere and comprising a graphene compound; and a second metal nanoparticle dispersed in the wrapping layer. COPYRIGHT KIPO 2017 ...

A PHOTOCATALYST FOR WATER SPLITTING

A nanocrystalline photocatalyst for water splitting and a method for fabricating a nanocrystalline photocatalyst for water splitting. The photocatalyst comprises a structure having a specific surface area and a volume fraction of atoms located both on the surface and at the grain boundaries adapted for enhancement of a photocatalytic reaction.

Solution-based approach to make porous coatings for sinter-resistant catalysts

Catalyst systems that are resistant to high-temperature sintering and methods for preparing such catalyst systems that are resistant to sintering at high temperatures are provided. Methods of forming such catalyst systems include contacting a support having a surface including a catalyst particle with a solution comprising a metal salt and having an acidic pH. The metal salt is precipitated onto the surface of the support. Next, the metal salt is calcined to selectively generate a porous coating of metal oxide on the surface of the support distributed around the catalyst particle.

ZIRCONIA CONTAINING SUPPORT MATERIAL FOR CATALYSTS

СЕРЕБРЯНЫЙ КАТАЛИЗАТОР ДЛЯ ПОЛУЧЕНИЯ ФОРМАЛЬДЕГИДА

Изобретение относится к области катализа. Описан способ получения кристаллов серебра с распределением среднего размера частиц от 0.15 мм до 2.5 мм и пористым покрытием оксидных материалов, в котором а) кристаллы серебра контактируют с золь-гелевым раствором материалов, о которых идет речь, в растворителе, который содержит органический растворитель и b) получающиеся в результате кристаллы серебра собирают, с) освобождают от органического растворителя и d) затем подвергают термической обработке при температуре между 50°С и точкой плавления серебра. Описано применение полученных кристаллов в качестве катализатора для получения формальдегида. Технический результат - увеличение активности катализатора получения формальдегида. 3 н. и 7 з.п. ф-лы, 3 ил., 4 табл., 1 пр.

Schalenkatalysator, Verfahren zu seiner Herstellung sowie Verwendung

Die vorliegende Erfindung betrifft einen Schalenkatalysator, ein Verfahren zu dessen Herstellung sowie die Verwendung des erfindungsgemäßen Schalenkatalysators.

Shell catalyst, process for its preparation and use

Silver catalyst for formaldehyde preparation

The present invention relates to a process for producing coated silver catalysts. The invention further addresses the silver catalysts themselves and the advantageous use thereof in formaldehyde synthesis.

CATALYST PREPARATION

SUPPORTED NICKEL CATALYSTS USED AS DIRECT INTERNAL REFORMING CATALYST IN MOLTEN CARBONATE FUEL CELLS

Disclosed here is a supported catalyst comprising a thermally stable core, wherein the thermally stable core comprises a metal oxide support and nickel disposed in the metal oxide support, wherein the metal oxide support comprises at least one base metal oxide and at least one transition metal oxide or rare earth metal oxide mixed with or dispersed in the base metal oxide. Optionally the supported catalyst can further comprise an electrolyte removing layer coating the thermally stable core and/or an electrolyte repelling layer coating the electrolyte removing layer, wherein the electrolyte removing layer comprises at least one metal oxide, and wherein the electrolyte repelling layer comprises at least one of graphite, metal carbide and metal nitride. Also disclosed is a molten carbonate fuel cell comprising the supported catalyst as a direct internal reforming catalyst.

BIFUNCTIONAL CATALYST COMPRISING EVENLY DISTRIBUTED PHOSPHOROUS

A bifunctional catalyst for conversion of oxygenates, said bifunctional catalyst comprising zeolite, alumina binder, Zn and P, wherein P is evenly distributed across the catalyst.

ZSM-5 CATALYST

Disclosed in certain embodiments are ZSM-5 zeolite microspheres. Disclosed in certain embodiments is a method of forming ZSM-5 zeolite microspheres including: 1) shaping a mixture into microspheres where the mixture includes a silica material and of particulates selected from at least one high-density material with an absolute bulk density of at least 0.3 g/cc, ZSM-5 zeolite crystals, and combinations thereof; 2) calcining the microspheres; and 3) reacting and subsequently heating the microspheres with at least one alkali solution to form ZSM-5 zeolite in-situ on the microspheres, where the ZSM-5 zeolite microspheres contain substantially no clay or calcined clay material.

CARBON BLACK BASED SHAPED POROUS PRODUCTS

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

CARBON BLACK BASED SHAPED POROUS PRODUCTS

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

Carbon black based shaped porous products

ZERO VALENT IRON CATALYST FOR REDUCTION PROCESSES

A method of reducing a substrate and a system for reducing a substrate are described herein. The method comprises contacting the substrate with a catalytic amount of zero valent iron particles and with a reducing agent, wherein the zero valent iron particles mediate transfer of an electron, hydrogen atom and/or hydride ion from the reducing agent to the substrate. The system comprises zero valent iron particles embedded in a porous matrix, wherein the system is configured for contacting the substrate and a reducing agent with a catalytic amount of the zero valent iron particles in the porous matrix. 1. A method of reducing a substrate , the method comprising contacting the substrate with a catalytic amount of zero valent iron particles and with a reducing agent , wherein said zero valent iron particles mediate transfer of an electron , hydrogen atom and/or hydride ion from said reducing agent to said substrate , thereby reducing the substrate.2. The method of claim 1 , wherein a molar ratio of an amount of said substrate which is reduced to said catalytic amount is at least 10:1 (substrate: iron).3. The method of claim 1 , being effected by transfer of electrons claim 1 , hydrogen atoms and/or hydride ions from said reducing agent to said zero valent iron particles so as to form zero valent iron particles with a negative charge and at least one hydrogen atom bound thereto.4. The method of claim 1 , wherein said reducing agent is characterized by a standard redox potential which is −0.5 Vor more negative claim 1 , in aqueous solution at pH 8.5. The method of claim 4 , wherein said standard redox potential is −0.7 Vor more negative claim 4 , in aqueous solution at pH 8.6. The method of claim 1 , wherein said zero valent iron particles comprise zero valent iron nanoparticles.7. The method of claim 1 , wherein said zero valent iron particles are embedded in a porous matrix.8. (canceled)9. The method of claim 1 , wherein said reducing agent is selected from the group ...

METHANE STEAM REFORMING, USING NICKEL/ALUMINA NANOCOMPOSITE CATALYST OR NICKEL/SILICA-ALUMINA HYBRID NANOCOMPOSITE CATALYST

The present invention relates to a method of methane steam reforming using a nickel/alumina nanocomposite catalyst. More specifically, the present invention relates to a method of carrying out methane steam reforming using a nickel/alumina nanocomposite catalyst wherein nickel metal nanoparticles are uniformly loaded in a high amount on a support via a melt infiltration method with an excellent methane conversion even under a relatively severe reaction condition of a high gas hourly space velocity or low steam supply, and to a catalyst for this method. In addition, the present invention prepares a nickel/silica-alumina hybrid nanocatalyst by mixing the catalyst prepared by the melt infiltration method as the first catalyst and the nickel silica yolk-shell catalyst as the second catalyst, and applies it to the steam reforming of methane to provide a still more excellent catalytic activity even under the higher temperature of ° C. or more with the excellent methane conversion. 150. A method of methane steam reforming with a methane conversion of % or more , which comprisesi) a step of providing a first catalyst for methane steam reforming which is prepared by a first step of grinding and mixing a porous alumina support and a nickel-containing compound having a melting point lower than the porous alumina support, and melt-infiltrating the nickel-containing compound into pores of the surface, inside, or both of the porous alumina support in a closed system at a temperature ranging from the melting point of the nickel-containing compound to ±5° C. higher than the melting point; and a second step of thermally treating the melt-infiltrated composite powder at 400 to 600° C. under reducing gas atmosphere to load nickel particles having the average particle size of 10 nm or less in the porous alumina support; ora nickel silica-alumina hybrid catalyst comprising the first catalyst; and a yolk-shell shaped second catalyst for methane steam reforming which has a nano- or micro- ...

METHOD OF TREATING BUTENE TO FORM PROPYLENE/ETHYLENE MIXTURE

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided. 1. A method of treating butene to form a mixture of propylene and ethylene , comprising:contacting a butene-containing hydrocarbon stream with a core-shell ZSM catalyst in a fixed-bed reactor to form a product stream comprising propylene and ethylene, wherein the core-shell ZSM catalyst is present in the fixed bed reactor as particles having a diameter of 0.5-1.0 mm packed in the fixed bed reactor,wherein at least 50 wt % of the butene-containing hydrocarbon stream is butene, andwherein the core-shell ZSM catalyst comprises:a ZSM-5 core, anda silica shell having a thickness in the range of 0.5 to 50 μm, which covers at least a portion of a surface of the ZSM-5 core.25-. (canceled)6. The method of claim 1 , wherein at least 50 wt % of the product stream is propylene and ethylene.7. The method of claim 1 , wherein a propylene-to-ethylene weight ratio of the product stream is within the range of 0.2 to 4.8. The method of claim 1 , further comprising:treating the core-shell ZSM catalyst with nitrogen at a temperature in the range of 400 to 700° C. prior to the contacting.9. The method of . further comprising:mixing the butene-containing hydrocarbon stream with nitrogen to form a gaseous mixture prior to the contacting, wherein a partial pressure of the butene-containing hydrocarbon stream in the gaseous mixture is within the range of 5 to 50 psi.10. The method of claim 1 , wherein the butene-containing hydrocarbon stream is contacted with the core-shell ZSM catalyst at a temperature in the range of 400 to 700° C. claim 1 , and a ...

METHOD FOR MAKING A CATALYST AND CRACKING A HYDROCARBON STREAM TO FORM PROPYLENE/ETHYLENE

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided. 1. A method for making a catalyst and cracking a hydrocarbon stream to form propylene and ethylene , comprising:mixing a ZSM silicalite with a silicalite gel to form a silicalite mixture, hydrothermally treating the silicalite mixture then calcining to form a core-shell ZSM catalyst.contacting a butene-containing hydrocarbon stream with the core-shell ZSM catalyst in a fixed-bed reactor to form a product stream comprising propylene and ethylene,wherein at least 50 wt % of the butene-containing hydrocarbon stream is butene, and a ZSM-5 core, and', 'a silica shell having a thickness in the range of 0.5 to 50 μm, which covers at least a portion of a surface of the ZSM-5 core., 'wherein the core-shell ZSM catalyst comprises2. The method of claim 1 , wherein the silica shell has a thickness in the range of 0.5 to 30 μm.3. The method of claim 1 , wherein the core-shell ZSM catalyst is dispersed in a silica and/or an alumina binder.4. The method of claim 1 , wherein a weight percent of the silica shell in the core-shell ZSM catalyst is within the range of 4 to 75 wt % claim 1 , with the weight percent being relative to the total weight of the core-shell ZSM catalyst.5. The method of claim 1 , wherein the core-shell ZSM catalyst has an acidity of less than 0.1 mmol/g.6. The method of claim 1 , wherein at least 50 wt % of the product stream is propylene and ethylene.7. The method of claim 1 , wherein a propylene-to-ethylene weight ratio of the product stream is within the range of 0.2 to 4.8. The method of claim 1 , further comprising: ...

METHOD OF MAKING AND SEPARATING A PROPYLENE/ETHYLENE MIXTURE FROM BUTENE

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided. 1: A fluidized-bed method of cracking butene to form propylene and ethylene , comprising:contacting a butene-containing hydrocarbon stream with a core-shell ZSM catalyst in a fluidized-bed reactor to form a product stream comprising propylene and ethylene, thenseparating the propylene and ethylene from the product stream with a stripping column,wherein at least 50 wt % of the butene-containing hydrocarbon stream is butene, andwherein the core-shell ZSM catalyst comprises:a ZSM-5 core, anda silica shell having a thickness in the range of 0.5 to 50 μm, which covers at least a portion of a surface of the ZSM-5 core.24-. (canceled)5: The method of claim 1 , wherein the core-shell ZSM catalyst has an acidity of less than 0.1 mmol/g.6: The method of claim 1 , wherein at least 50 wt % of the product stream is propylene and ethylene.7: The method of claim 1 , wherein a propylene-to-ethylene weight ratio of the product stream is within the range of 0.2 to 4.8: The method of claim 1 , further comprising:treating the core-shell ZSM catalyst with nitrogen at a temperature in the range of 400 to 700° C. prior to the contacting.9: The method of claim 1 , further comprising:mixing the butene-containing hydrocarbon stream with nitrogen to form a gaseous mixture prior to the contacting, wherein a partial pressure of the butene-containing hydrocarbon stream in the gaseous mixture is within the range of 5 to 50 psi.10: The method of claim 1 , wherein the butene-containing hydrocarbon stream is contacted with the core-shell ZSM catalyst at a ...

Shaped porous carbon products

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

CORE-SHELL COBALT CATALYSTS FOR FISCHER-TROPSCH SYNTHESIS REACTION AND PREPARING METHOD THEREOF

The present invention relates to a core-shell cobalt catalyst used for a Fischer-Tropsch synthesis reaction and a method for preparing the same. More particularly, it relates to a cobalt catalyst, which has a core-shell structure including a cobalt-supported and sintered alumina particle as a core and a zeolite powder coated on the surface of the alumina particle to a thickness of 50 μm or greater through mechanical alloying as a shell and is used to prepare hydrocarbons with high octane numbers through a Fischer-Tropsch synthesis reaction, and a method for preparing the same. 1. A core-shell cobalt catalyst for a Fischer-Tropsch synthesis reaction , which comprises a spherical , cobalt-supported and sintered alumina particle having a diameter of 1-5 mm as a core and a zeolite powder having a SiO/AlOmolar ratio of 5-40 coated on the surface of the core to a thickness of 50-300 μm through a mechanical alloying process as a shell.2. The core-shell cobalt catalyst for a Fischer-Tropsch synthesis reaction according to claim 1 , which has a bimodal porous structure with the core having mesopores with an average pore size of 10.5-21.1 nm and the shell having micropores with an average pore size of 0.6-0.82 nm.3. The core-shell cobalt catalyst for a Fischer-Tropsch synthesis reaction according to claim 1 , wherein the alumina particle constituting the core is an α- or γ-alumina particle.4. The core-shell cobalt catalyst for a Fischer-Tropsch synthesis reaction according to claim 1 , wherein the zeolite powder coated through the mechanical alloying process is ZSM-5 zeolite. This application claims, under 35 U.S.C. §119, the priority of Korean Patent Application No. 10-2015-0107101, filed on Jul. 29, 2015, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.(a) Technical FieldThe present invention relates to a core-shell cobalt catalyst used for a Fischer-Tropsch synthesis reaction and a method for preparing ...

Methanation Catalyst

The invention relates to use of a catalyst comprising particles of nickel dispersed in a porous silica matrix for catalysing a methanation reaction. There is also described a method for methanation of a feedstock at least comprising gases carbon monoxide and hydrogen, said method comprising contacting the feedstock with the catalyst.

NANOCATALYST WITH MESOPOROUS SHELL FOR HYDROGEN PEROXIDE PRODUCTION AND METHODFOR HYDROGEN PEROXIDE PRODUCTION USING THE SAME

Disclosed is a core-shell structured nanocatalyst for hydrogen peroxide production. The core-shell structured nanocatalyst includes a core composed of spherical silica immobilized with noble metal nanoparticles and a mesoporous shell surrounding the core. The use of the nanocatalyst with a mesoporous shell for the production of hydrogen peroxide from hydrogen and oxygen ensures high hydrogen conversion and hydrogen peroxide production rate compared to the use of conventional nanoparticle catalysts with a microporous shell. Also disclosed is a method for hydrogen peroxide production using the nanocatalyst. 1. A core-shell nanoparticle catalyst for hydrogen peroxide production comprising a silica nanoparticle core immobilized with noble metal nanoparticles and a mesoporous shell.2. The core-shell nanoparticle catalyst according to claim 1 , wherein the noble metal is selected from palladium (Pd) claim 1 , gold claim 1 , (Au) claim 1 , platinum (Pt) claim 1 , and alloys thereof.3. The core-shell nanoparticle catalyst according to claim 1 , wherein the noble metal nanoparticles have a size of 1 to 30 nm.4. The core-shell nanoparticle catalyst according to claim 1 , wherein the core-shell nanoparticles are supported on silica (SiO) claim 1 , titania (TiO) claim 1 , alumina (AlO) claim 1 , zirconia (ZrO) claim 1 , carbon (C) claim 1 , and composites thereof.5. The core-shell nanoparticle catalyst according to claim 1 , wherein the mesoporous shell has a thickness of 5 to 40 nm.6. A method for preparing a core-shell nanoparticle catalyst for hydrogen peroxide production claim 1 , the method comprising (1) preparing noble metal nanoparticles claim 1 , (2) immobilizing the noble metal nanoparticles on silica claim 1 , and (3) coating a mesoporous shell on the silica immobilized with the noble metal nanoparticles.7. A method for hydrogen peroxide production comprising feeding hydrogen and oxygen to a reactor where the hydrogen reacts with the oxygen in the presence of the ...

Multistage Nanoreactor Catalyst and Preparation and Application Thereof

The present disclosure discloses a multistage nanoreactor catalyst and preparation and application thereof, belonging to the technical field of synthesis gas conversion. The catalyst consists of a core of an iron-based Fischer-Tropsch catalyst, a transition layer of a porous oxide or porous carbon material, and a shell layer of a molecular sieve having an aromatization function. The molecular sieve of the shell layer can be further modified by a metal element or a non-metal element, and the outer surface of the molecular sieve is further modified by a silicon-oxygen compound to adjust the acidic site on the outer surface and the aperture of the molecular sieve, thereby inhibiting the formation of heavy aromatic hydrocarbons. According to the disclosure, the shell layer molecular sieve with a transition layer and a shell layer containing or not containing auxiliaries, and with or without surface modification can be prepared by the iron-based Fischer-Tropsch catalyst through multiple steps. The catalyst can be used for direct preparation of aromatic compounds, especially light aromatic compounds, from synthesis gas; the selectivity of light aromatic hydrocarbons in hydrocarbons can be 75% or above, and the content in the liquid phase product is not less than 95%; and the catalyst has good stability and good industrial application prospect. 1. A multistage nanoreactor catalyst , comprising a structure of a core , a shell body and a core-shell transition layer; wherein the core layer is an iron-based catalyst having Fischer-Tropsch activity , weight of the core layer being 0.1% to 80% of total weight of the catalyst; wherein the shell body is a molecular sieve , the weight of the shell body being 0.1% to 80% of the total weight of the catalyst; and wherein the core-shell transition layer is a porous oxide or porous carbon material , the weight of the transition layer being 0.01% to 35% of the total weight of the catalyst.2. The multistage nanoreactor catalyst according ...

SUPPORTED CORE-SHELL STRUCTURED ZnO CATALYST, AND PREPARATION METHOD AND USE THEREOF

The present invention belongs to the technical field of supported catalysts, and discloses a supported core-shell structured ZnO catalyst, and a preparation method and use thereof. With AlOas a support and ZnO as active sites, the catalyst is characteristic of a NiZn@ZnO core-shell structure, which consists of a NiZn alloy core and a ZnO shell The preparation method comprises firstly dissolving Ni(NO).6HO and Zn(NO).6HO in deionized water; then impregnating AlOwith the solution described above, followed by uniform ultrasonic dispersion and complete drying; and finally the obtained solid is calcinated and reduced to obtain the target catalyst, which exhibits high activity, selectivity and stability. The catalyst can be used for the dehydrogenation of light alkanes to alkenes, especially in dehydrogenation of propane to propylene. 1. A supported core-shell structured ZnO catalyst , wherein the catalyst is composed of AlOas a support and ZnO as active sites; a NiZn@ZnO core-shell structure , which consists of a NiZn alloy core and a ZnO shell , is supported on the AlO , denoted as NixZny/AlO , wherein x:y=(1:1)-(1:4) , representing the molar ration of Ni/Zn.2. The supported core-shell structured ZnO catalyst according to claim 1 , wherein the catalyst contains 1%-3% of Ni based on the mass of the AlOsupport.3. The supported core-shell structured ZnO catalyst according to claim 2 , wherein the catalyst contains 0.5%-6% of Ni based on the mass of the AlOsupport.4. The supported core-shell structured ZnO catalyst according to claim 1 , wherein x:y=1:3.5. A method for preparing the supported core-shell structured ZnO catalyst according to claim 1 , wherein the method comprises the following steps:{'sub': ['3', '3', '2', '3', '2', '2'], '#text': '(1) dissolving Ni(NO).6HO and Zn(NO).6HO in deionized water;'}{'sub': ['2', '3'], '#text': '(2) impregnating AlOwith the solution obtained in step (1), followed by uniform ultrasonic dispersion and complete drying; and'}{'sub': ['2 ...

CATALYSTS AND RELATED METHODS FOR PHOTOCATALYTIC PRODUCTION OF H2O2 AND THERMOCATALYTIC REACTANT OXIDATION

Catalysts, catalytic systems and related synthetic methods for in situ production of HOand use thereof in reaction with oxidizable substrates. 134-. (canceled)36. The method of claim 35 , wherein the proton donor is an alcohol.37. The method of claim 35 , wherein the proton donor is a linear alkene.38. The method of claim 35 , wherein the transition metal moieties comprise V claim 35 , Ti claim 35 , Cr claim 35 , Mn claim 35 , Co claim 35 , Cu claim 35 , Zn claim 35 , Mo claim 35 , Nb claim 35 , Ta claim 35 , W claim 35 , Os claim 35 , Re claim 35 , Ir claim 35 , Sn claim 35 , or a combination thereof.39. The method of claim 35 , wherein the transition metal moieties comprise Ti.40. The method of claim 39 , wherein the alkene is propylene claim 39 , and the oxidation product is propylene oxide.41. The method of claim 36 , wherein the alcohol is isopropanol.42. The method of claim 41 , wherein the photocatalytic oxidation of the isopropanol produces acetone.43. The method of claim 42 , further comprising hydrogenating the acetone to regenerate the isopropanol.44. The method of claim 35 , wherein the oxidation reaction is an epoxidation reaction.45. The method of claim 44 , wherein the alkene is a cycloalkene.46. The method of claim 45 , wherein the cycloalkene is cyclooctene.47. The method of claim 45 , wherein the proton donor is an alcohol48. The method of claim 35 , wherein the irradiation is intermittent. The present application is a divisional of U.S. patent application Ser. No. 15/073,892 filed Mar. 18, 2016, the entire contents of which are hereby incorporated herein by reference; which claims priority to U.S. provisional patent application No. 62/136,073, filed on Mar. 20, 2015, the entire contents of which are hereby incorporated herein by reference.This invention was made with government support under DE-SC0006718 awarded by the Department of Energy. The government has certain rights in the invention.Approximately 3.5 million metric tons of hydrogen ...

CORE-SHELL CATALYST AND OXYGEN REDUCTION METHOD

Provided is a catalyst having a core-shell structure (which employs a core comprised of a highly electrochemically stable, relatively inexpensive material and thereby reduces the amount of platinum used, while providing a better cost/performance ratio in catalytic activity as compared to when platinum particles are used as a catalyst) for use in an oxygen reduction reaction (cathode reaction in a fuel cell), and to provide an oxygen reduction method using the catalyst. Provided is a core-shell catalyst for use for an oxygen reduction reaction, including: a core that is comprised of silver; and a shell layer that comprised of platinum, the shell layer being comprised of platinum atoms constituting a (111) plane of or a (001) plane of a face centered cubic lattice, in the shell layer, a nearest neighbor platinum-platinum interatomic distance falling within the range of from 2.81 {acute over (Å)} to 2.95 {acute over (Å)}. 1. A core-shell catalyst for use for an oxygen reduction reaction , comprising:a core that comprises silver; anda shell layer that comprises platinum, whereinat an interface between the core and the shell layer, silver atoms in an outermost layer of the core constitute a (111) plane of a face centered cubic lattice,a plurality of platinum atoms that constitute the shell layer constitute a (111) plane of a face centered cubic lattice, the (111) plane constituted by the plurality of platinum atoms residing on the (111) plane constituted by the silver atoms, andin the shell layer, a nearest neighbor platinum-platinum interatomic distance falls within the range of from 2.81 {acute over (Å)} to 2.95 {acute over (Å)}.2. (canceled)3. A core-shell catalyst for use for an oxygen reduction reaction , comprising:a core that comprises silver; anda shell layer that comprises platinum, whereinat an interface between the core and the shell layer, silver atoms in an outermost layer of the core constitute a (001) plane of a face centered cubic lattice,a plurality of ...

COMPOSITION

A composition consisting essentially of a perovskite crystalline structure, the composition comprising: ions of a first metal Mwhich occupies an A-site of the perovskite crystalline structure; ions of a second metal Mwhich occupies a B-site of the perovskite crystalline structure, Mhaving two oxidation states capable of forming a redox couple suitable for reversibly catalyzing an oxygen reduction reaction (ORR) and an oxygen evolution reaction (OER); ions of a third metal Mat least a portion of which substitutes for Min the A-site of the perovskite crystalline structure, and at least a portion of which optionally also substitutes for Min the B-site of the perovskite crystalline structure, at least some of the atoms Mhaving a different oxidation state to the atoms M; and atoms of an element X, which is a chalcogen; wherein the metal ions M, Mand Mare present in the atomic ratios (a) or (b): (a) 25 to 49.9 atomic % M, 30 to 60 atomic % M, and 5 to 45 atomic % M; (b) 10 to 30 atomic % M, 50.1 to 60 atomic % M, and 25 to 45 atomic % M; each expressed as a percentage of the total metal ions in the composition excluding oxygen; wherein the presence of the Mions causes a change in the oxidation state of some of the Mions in the structure, thereby creating the redox couple suitable for reversibly catalyzing the ORR and OER. 1. A composition consisting essentially of a perovskite crystalline structure , the composition comprising:{'sup': '1', 'ions of a first metal Mwhich occupies an A-site of the perovskite crystalline structure;'}{'sup': 2', '2, 'ions of a second metal Mwhich occupies a B-site of the perovskite crystalline structure, Mhaving two oxidation states capable of forming a redox couple suitable for reversibly catalyzing an oxygen reduction reaction (ORR) and an oxygen evolution reaction (OER);'}{'sup': 3', '1', '2', '3', '1, 'ions of a third metal M, at least a portion of which substitutes for Min the A-site of the perovskite crystalline structure, and at least a ...

Nickel-Containing Yolk-Shell Catalysts

The present disclosure relates to yolk-shell structured catalysts. The yolk-shell catalysts can be particularly useful in the tri-reforming of methane. The yolks can include a primary material (M), such as nickel (Ni) or nickel oxide (NiO), and a secondary material (M). The shell is generally a porous material that can support the yolk. The shell can include silica (SiO) and the secondary material can include ceria (CeO). The yolk-shell catalyst can take the form of tube-like structures in which the yolk is dispersed within the shell support in a substantially homogeneous fashion. 1. A yolk-shell structured catalyst for tri-reforming of methane comprising:{'sub': 1', '2, 'a yolk including a primary material (M) and a secondary material (M); and'}a porous shell support that encapsulates the yolk.2. The catalyst of claim 1 , wherein the primary material (M) includes nickel (Ni) or nickel oxide.3. The catalyst of claim 1 , wherein the secondary material includes cerium (Ce) claim 1 , palladium (Pd) claim 1 , or iron (Fe).4. The catalyst of claim 1 , wherein the secondary material includes ceria (CeO).5. The catalyst of claim 1 , wherein the porous shell support includes silica (SiO).6. The catalyst of claim 1 , wherein nickel comprises from 0.1 wt. % to 30 wt. % of the catalyst.7. The catalyst of claim 1 , wherein the secondary material comprises from 0.1 wt. % to 10 wt. % of the catalyst.8. The catalyst of claim 1 , wherein the catalyst is produced using a reverse microemulsion process.9. The catalyst of claim 1 , wherein the catalyst has pores ranging from about 5 nm to about 30 nm in diameter.10. The catalyst of claim 1 , wherein the catalyst is in the form of spherical particles.11. The catalyst of claim 10 , wherein the spherical particles have an average diameter of from about 10 nm to about 500 nm.12. The catalyst of claim 1 , wherein the catalyst is in the form of tubular particles.13. The catalyst of claim 12 , wherein the tubular particles have an average ...

SUPPORTED NICKEL CATALYSTS USED AS DIRECT INTERNAL REFORMING CATALYST IN MOLTEN CARBONATE FUEL CELLS

Disclosed here is a supported catalyst comprising a thermally stable core, wherein the thermally stable core comprises a metal oxide support and nickel disposed in the metal oxide support, wherein the metal oxide support comprises at least one base metal oxide and at least one transition metal oxide or rare earth metal oxide mixed with or dispersed in the base metal oxide. Optionally the supported catalyst can further comprise an electrolyte removing layer coating the thermally stable core and/or an electrolyte repelling layer coating the electrolyte removing layer, wherein the electrolyte removing layer comprises at least one metal oxide, and wherein the electrolyte repelling layer comprises at least one of graphite, metal carbide and metal nitride. Also disclosed is a molten carbonate fuel cell comprising the supported catalyst as a direct internal reforming catalyst. 1. A supported catalyst comprising:a thermally stable core comprising a metal oxide support and nickel disposed in the metal oxide support, wherein the metal oxide support comprises at least one base metal oxide and at least one transition metal oxide or rare earth metal oxide mixed with or dispersed in the base metal oxide;an electrolyte repelling layer; andan electrolyte removing layer;wherein the electrolyte repelling layer coats the electrolyte removing layer, the electrolyte removing layer coats the thermally stable core to form a core-shell structure and comprises at least one metal oxide, and the electrolyte repelling layer comprises at least one material selected from the group consisting of graphite, metal carbide, and metal nitride.2. The supported catalyst of claim 1 , wherein the metal oxide support has a surface area within a range of 5 to 120 m/g.3. The supported catalyst of claim 1 , wherein the base metal oxide comprises at least one alkaline metal oxide or post-transition metal oxide.4. The supported catalyst of claim 1 , wherein the base metal oxide comprises at least one material ...

HYDROCARBON CONVERSION PROCESSES USING METAL CARBIDE NANOMATERIAL CATALYSTS

A catalyst that includes heterogeneous metal carbide nanomaterials and a novel preparation method to synthesize the metal carbide nanomaterials under relatively mild conditions to form an encapsulated transition metal and/or transition metal carbide nanoclusters in a support and/or binder. The catalyst may include confined platinum carbide nanoclusters. The preparation may include the treatment of encapsulated platinum nanoclusters with ethane at elevated temperatures. The catalysts may be used for catalytic hydrocarbon conversions, which include but are not limited to, ethane aromatization, and for selective hydrogenation, with negligible green oil production. 1. A catalytic process using metal carbide nanomaterials comprising the steps of:preparing a metal carbide nanomaterial comprising a support and a plurality of metal carbide nanoclusters encapsulated in a plurality of micropores of the support,performing a catalytic hydrocarbon conversion process using the metal carbide nanomaterial.2. The catalytic process according to claim 1 , wherein the support is selected from claim 1 , but not limited to claim 1 , inorganic oxides claim 1 , silicon carbide claim 1 , silicon nitride claim 1 , boron nitride claim 1 , carbon claim 1 , and combinations thereof claim 1 , preferably an aluminosilicate zeolite claim 1 , more preferably ZSM-5.3. The catalytic process according to claim 1 , wherein the metal is a transition metal claim 1 , preferably platinum.4. The catalytic process according to claim 1 , wherein the catalyst contains between 300-25000 ppm of platinum claim 1 , and most preferably 500 ppm platinum.5. The catalytic process according to claim 4 , wherein the encapsulated platinum carbide nanoclusters have a size close to 1 nm.6. The catalytic process according to claim 4 , wherein the catalyst has a platinum dispersion greater than 90%.7. The catalytic process according to claim 1 , wherein the hydrocarbon conversion process includes but is not limted to ...

METAL CARBIDE NANOMATERIAL CATALYSTS AND PRODUCTION METHOD THEREOF

A catalyst that includes heterogeneous metal carbide nanomaterials and a novel preparation method to synthesize the metal carbide nanomaterials under relatively mild conditions to form an encapsulated transition metal and/or transition metal carbide nanoclusters in a support and/or binder. The catalyst may include confined platinum carbide nanoclusters. The preparation may include the treatment of encapsulated platinum nanoclusters with ethane at elevated temperatures. The catalysts may be used for catalytic hydrocarbon conversions, which include but are not limited to, ethane aromatization, and for selective hydrogenation, with negligible green oil production. 1. A method for synthesizing a catalyst comprising the steps of:mixing a support and/or binder with an aqueous solution of metal precursor, preferably metal nitrate, to form a mixture;drying the mixture to form a dry product;calcinating the dry product; andreducing the dry product to form a catalyst comprising an encapsulated metal nanocluster within the support and/or binder.2. The method according to claim 1 , further comprising the step of activating the catalyst in an atmosphere comprising at least one carbon-containing molecule claim 1 , and the catalyst comprises multiple encapsulated metal nanoclusters.3. The method according to claim 2 , wherein the metal is a transition metal claim 2 , preferably platinum.4. The method according to claim 1 , further comprising the step of cooling the dry product in a hydrogen atmosphere.5. The method according to claim 1 , wherein the calcinating comprises an air calcination.6. The method according to claim 5 , wherein the calcinating occurs at a temperature between 300-800° C. claim 5 , preferably at 550° C. claim 5 , for a certain period claim 5 , preferably 0.5 to 24 hours claim 5 , more preferably four hours.7. The method according to claim 1 , wherein the catalyst contains between 300-25000 ppm of platinum claim 1 , and most preferably 500 ppm platinum.8. The ...

SIO2-LAYERED DOUBLE HYDROXIDE MICROSPHERES AND METHODS OF MAKING THEM

A method of making silica-layered double hydroxide microspheres having the formula I: (i) wherein, M and M′ are two different charged metal cations; z=1 or 2; y=3 or 4; 00, q>0, Xis an anion; with n>0 a=z(1−x)+xy−2; and the AMO-solvent is an 100% aqueous miscible organic solvent; comprises the steps: (a) contacting silica microspheres and a metal ion containing solution containing metal ions M and M′ in the presence of a base and an anion solution; (b) collecting the product; and (c) optionally treating the product with AMO-solvent and recovering the solvent treated material to obtain the silica-layered double hydroxide microspheres. Preferably, M in the formula I is Li, Mg, Ni or Ca. Preferably, M′ in formula I is Al. The invention further provides silica-layered double hydroxide microspheres having the formula I. The silica-layered double hydroxide microspheres may be used as catalysts and/or catalyst supports. 1. A method of making silica-layered double hydroxide microspheres having the formula I{'br': None, 'sub': 2', 'p', '(1−x)', 'x', '2', 'a/n', '2', 'q, 'sup': z+', 'y+', 'a+', 'n−, 'i': .b', 'c, '(SiO)@{[MM′(OH)](X)HO.(AMO-solvent)}\u2003\u2003(I)'}wherein,{'sup': z+', 'y+, 'M and M′ are two different charged metal cations;'}z=1 or 2;y=3 or 4;00,q>0,{'sup': 'n−', 'Xis an anion; with n>0'}a=z(1−x)+xy−2; andthe AMO-solvent is an 100% aqueous miscible organic solvent;which method comprises the steps:{'sup': z+', 'y+, '(a) contacting silica microspheres and a metal ion containing solution containing metal ions M and M′ in the presence of a base and an anion solution;'}(b) collecting the product; and(c) optionally treating the product with AMO-solvent and recovering the solvent treated material to obtain the silica-layered double hydroxide microspheres.2. The method according to claim 1 , wherein M′ is one or more trivalent metal cations.3. The method according to claim 1 , wherein M is one ...

High Activity Platinum and Nickel Yolk-Shell Catalysts

The present disclosure relates to yolk-shell structured catalysts having compositions that can be particularly useful in the dry reforming of methane. These catalysts can demonstrate long-term stability that would be an advantage in industrial applications such as mitigating fossil fuel plant emissions. Example catalysts can include a yolk containing nickel (Ni) or nickel oxide (NiO), platinum (Pt) or platinum oxide (PtO), and a third material (M3) such as a cerium oxide (CeO). The shell can be formed of a ceramic such as silica and is generally a porous material that can support the yolk. 1. A yolk-shell catalyst comprising:a plurality of particles, each particle comprising nickel, platinum, and a third material comprising a metal or a metalloid; anda porous shell that encapsulates the plurality of particles.2. The yolk-shell catalyst of claim 1 , wherein the third material comprises cerium (Ce) claim 1 , palladium (Pd) claim 1 , or iron (Fe).3. The yolk-shell catalyst of claim 1 , wherein the third material comprises a cerium oxide (CeO).4. The catalyst of claim 1 , wherein the porous shell comprises silica (SiO).5. The catalyst of claim 1 , wherein the particles comprise from about 5 wt. % to about 25 wt. % of the catalyst.6. The catalyst of claim 1 , wherein the total amount of nickel and platinum combined comprises from about 0.2 wt. % to about 15 wt. % of the catalyst.7. The catalyst of claim 1 , wherein the third material comprises from about 0.1 wt. % to about 10 wt. % of the catalyst.8. The catalyst of claim 1 , wherein the porous shell comprises pores having a size of from about 1 nm to about 30 nm in cross section.9. The catalyst of claim 1 , wherein the particles comprise spherical particles or cylindrical particles.10. The catalyst of claim 9 , wherein the spherical particles have an average diameter of from about 5 nm to about 500 nm.11. The catalyst of claim 9 , wherein the cylindrical particles have an average diameter of from about 5 nm to about 800 ...

FLUIDIZED-BED CRACKING OF BUTENE TO FORM PROPYLENE AND ETHYLENE

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided. 1. A fluidized-bed method of cracking butene to form propylene and ethylene , comprising:contacting a butene-containing hydrocarbon stream with a core-shell ZSM catalyst in a fluidized-bed reactor to form a product stream comprising propylene and ethylene,wherein at least 50 wt % of the butene-containing hydrocarbon stream is butene, andwherein the core-shell ZSM catalyst comprises:a ZSM-5 core, anda silica shell having a thickness in the range of 0.5 to 50 μm, which covers at least a portion of a surface of the ZSM-5 core.2. The method of claim 1 , wherein the silica shell has a thickness in the range of 0.5 to 30 μm.3. The method of claim 1 , wherein the core-shell ZSM catalyst is dispersed in a silica and/or an alumina binder.4. The method of claim 1 , wherein a weight percent of the silica shell in the core-shell ZSM catalyst is within the range of 4 to 75 wt % claim 1 , with the weight percent being relative to the total weight of the core-shell ZSM catalyst.5. The method of claim 1 , wherein the core-shell ZSM catalyst has an acidity of less than 0.1 mmol/g.6. The method of claim 1 , wherein at least 50 wt % of the product stream is propylene and ethylene.7. The method of claim 1 , wherein a propylene-to-ethylene weight ratio of the product stream is within the range of 0.2 to 4.8. The method of claim 1 , further comprising:treating the core-shell ZSM catalyst with nitrogen at a temperature in the range of 400 to 700° C. prior to the contacting.9. The method of claim 1 , further comprising:mixing the butene-containing ...

METHOD FOR CRACKING BUTENE

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided. 1: A method of cracking a butene-containing hydrocarbon stream to produce a mixture of propylene and ethylene , comprising:contacting the butene-containing hydrocarbon stream with a core-shell ZSM catalyst in a fixed-bed reactor to form a product stream comprising propylene and ethylene,wherein at least 50 wt % of the butene-containing hydrocarbon stream is butene, andwherein the core-shell ZSM catalyst comprises:a ZSM-5 core, anda silica shell having a thickness in the range of 0.5 to 50 μm, which covers at least a portion of a surface of the ZSM-5 core.2: The method of claim 1 , wherein the silica shell has a thickness in the range of 0.5 to 30 μm.3: The method of claim 1 , wherein the core-shell ZSM catalyst is dispersed in a silica and/or an alumina binder.4: The method of claim 1 , wherein a weight percent of the silica shell in the core-shell ZSM catalyst is within the range of 4 to 75 wt % claim 1 , with the weight percent being relative to the total weight of the core-shell ZSM catalyst.5: The method of claim 1 , wherein the core-shell ZSM catalyst has an acidity of less than 0.1 mmol/g.6: The method of claim 1 , wherein at least 50 wt % of the product stream is propylene and ethylene.7: The method of claim 1 , wherein a propylene-to-ethylene weight ratio of the product stream is within the range of 0.2 to 4.8: The method of claim 1 , further comprising:treating the core-shell ZSM catalyst with nitrogen at a temperature in the range of 400 to 700° C. prior to the contacting.9: The method of claim 1 , further comprising: ...

Core-Shell Nanoparticulate Compositions And Methods

Core-shell nanoparticulate compositions and methods for making the same are disclosed. In some embodiments core-shell nanoparticulate compositions comprise transition metal core encapsulated by metal oxide shell. Methods of catalysis comprising core-shell nanoparticulate compositions of the invention are disclosed. Compositions comprising core-shell nanoparticles displayed on a metal-oxide support and methods for preparing the same are also disclosed. In some embodiments compositions comprise core-shell nanoparticles displayed as a substantially single layer superposed on a metal oxide support. Methods of catalysis employing the supported core-shell nanoparticles are disclosed. 1. A core-shell nanoparticulate composition comprising: a late-transition-metal core encapsulated by a metal oxide shell , said shell comprising CeO , HfO , TiO , ZnO , ZrO , or a combination thereof.2. The composition of wherein the late-transition-metal core comprises Pd or Pt.3. A core-shell nanoparticulate composition claim 1 , comprising: a late-transition-metal core encapsulated by a metal oxide shell comprising at least one oxide of a metal of Group 3 claim 1 , 4 or 5.4. The composition of claim 3 , wherein the late-transition-metal core contains no more than 50 wt % Pd relative to the weight of the entire core.5. The composition of claim 3 , wherein the late-transition-metal core comprises Pt or the metal oxide shell comprises CeO claim 3 , HfO claim 3 , TiO claim 3 , ZrO claim 3 , or a combination thereof.67-. (canceled)8. A composition claim 3 , comprising: a plurality of core-shell nanoparticles of the composition of claim 3 , said nanoparticles displayed (i) on a metal oxide support claim 3 , the core-shell nanoparticles comprising a Pt core encapsulated by a metal oxide shell; (ii) on a silica intermediate layer that is attached to a metal oxide support; or (iii) as a substantially single layer superposed on a metal oxide support.9. The composition of wherein the metal oxide ...

Heterogeneous catalyst, method of producing the heterogeneous catalyst, and method of producing lignin-derived high-substituted aromatic monomer from woody biomass material

Disclosed are a heterogeneous catalyst, a production method thereof, and a method for producing a lignin-derived high-substituted aromatic monomer from a woody biomass material using the heterogeneous catalyst. The heterogeneous catalyst includes a carrier; and a Ni—Al nano-particle supported on the carrier.

SOLUTION-BASED APPROACH TO MAKE POROUS COATINGS FOR SINTER-RESISTANT CATALYSTS

Catalyst systems that are resistant to high-temperature sintering and methods for preparing such catalyst systems that are resistant to sintering at high temperatures are provided. Methods of forming such catalyst systems include contacting a support having a surface including a catalyst particle with a solution comprising a metal salt and having an acidic pH. The metal salt is precipitated onto the surface of the support. Next, the metal salt is calcined to selectively generate a porous coating of metal oxide on the surface of the support distributed around the catalyst particle. 1. A catalyst system comprising:a platinum group metal catalyst bound to a metal oxide support; anda crystalline coating of metal oxide nanoparticles selectively disposed on the metal oxide support, wherein the crystalline coating has a porosity of greater than about 20% to less than about 70% and covers greater than or equal to about 1.5% to less than or equal to about 80% of an exposed surface area of the metal oxide support.2. The catalyst system according to claim 1 , wherein the platinum group metal catalyst comprises a metal selected from the group consisting of: platinum (Pt) claim 1 , ruthenium (Ru) claim 1 , rhodium (Rh) claim 1 , palladium (Pd) claim 1 , osmium (Os) claim 1 , iridium (Ir) claim 1 , gold (Au) claim 1 , and combinations thereof.3. The catalyst system according to claim 1 , wherein the metal oxide nanoparticles comprise an element selected from the group consisting of: aluminum (Al) claim 1 , cerium (Ce) claim 1 , zirconium (Zr) claim 1 , titanium (Ti) claim 1 , silicon (Si) claim 1 , magnesium (Mg) claim 1 , zinc (Zn) claim 1 , sodium (Na) claim 1 , potassium (K) claim 1 , barium (Ba) claim 1 , calcium (Ca) claim 1 , and combinations thereof.4. The catalyst system according to claim 1 , wherein the metal oxide nanoparticles comprise a metal oxide selected from the group consisting of: aluminum oxide (AlO) claim 1 , cerium oxide (CeO) claim 1 , zirconium oxide (ZrO) ...

SHAPED POROUS CARBON PRODUCTS

Shaped porous carbon products and processes for preparing these products are provided. The shaped porous carbon products can be used, for example, as catalyst supports and adsorbents. Catalyst compositions including these shaped porous carbon products, processes of preparing the catalyst compositions, and various processes of using the shaped porous carbon products and catalyst compositions are also provided. 1146-. (canceled)147. A process for the selective oxidation of an aldose to an aldaric acid comprising reacting the aldose with oxygen in the presence of a catalyst composition to form the aldaric acid , wherein the catalyst composition comprises a shaped porous carbon product as a catalyst support and a catalytically active component , wherein the shaped porous carbon product comprises:(a) carbon black and{'sup': 2', '2', '3, '(b) a carbonized binder comprising a carbonization product of a water soluble organic binder and wherein the shaped porous carbon product has a BET specific surface area from about 20 m/g to about 500 m/g, a mean pore diameter greater than about 5 nm, a specific pore volume greater than about 0.1 cm/g, a carbon black content of at least about 35 wt. %, and a carbonized binder content from about 20 wt. % to about 50 wt. %.'}148160-. (canceled)161. The process of claim 147 , wherein the aldose comprises a pentose and/or a hexose.162. The process of claim 161 , wherein the pentose comprises ribose claim 161 , arabinose claim 161 , xylose claim 161 , and/or lyxose.163. The process of claim 161 , wherein the hexose comprises glucose claim 161 , allose claim 161 , altrose claim 161 , mannose claim 161 , gulose claim 161 , idose claim 161 , galactose claim 161 , and/or talose.164. The process of claim 147 , wherein the aldaric acid is selected from the group consisting of xylaric acid and glucaric acid.165. The process of claim 147 , wherein the aldaric acid comprises glucaric acid.166. The process of claim 147 , wherein the catalytically ...

Sio2-layered double hydroxide microspheres and methods of making them

Porous particles comprising an active ingredient and a coating exhibiting greater dissolution rate in aqueous media than in alcoholic media are disclosed. A process for the manufacture of the particles is also disclosed, as well as tamper-proof particles and solid dosage forms comprising the coated particles. The differential solubility characteristics of the particle coating allow the particles to be incorporated into abuse-deterrent medicaments.

SHAPED POROUS CARBON PRODUCTS

Shaped porous carbon products and processes for preparing these products are provided. The shaped porous carbon products can be used, for example, as catalyst supports and adsorbents. Catalyst compositions including these shaped porous carbon products, processes of preparing the catalyst compositions, and various processes of using the shaped porous carbon products and catalyst compositions are also provided. 1160-. (canceled)161. A process for the hydrogenolysis of glycerol comprising feeding a feed composition comprising glycerol to a reaction zone and reacting the glycerol with hydrogen in the presence of a catalyst composition of in the reaction zone to form a reaction product comprising propylene glycol and/or ethylene glycol , wherein the catalyst composition comprises a shaped porous carbon product as a catalyst support and a catalytically active component or precursor thereof , wherein the shaped porous carbon product comprises:(a) carbon black and{'sup': 2', '2', '3, '(b) a carbonized binder comprising a carbonization product of a water soluble organic binder and wherein the shaped porous carbon product has a BET specific surface area from about 20 m/g to about 500 m/g, a mean pore diameter greater than about 5 nm, a specific pore volume greater than about 0.1 cm/g, a carbon black content of at least about 35 wt. %, and a carbonized binder content from about 20 wt. % to about 50 wt. %, and'}wherein the shaped porous carbon product has a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm) and/or a mechanical piece crush strength greater than about 22 N (5 lbs).162. A process for the hydrogenolysis of glycerol comprising feeding a feed composition comprising glycerol to a reaction zone and reacting the glycerol with hydrogen in the presence of a catalyst composition in the reaction zone to form a reaction product comprising propylene glycol and/or ethylene glycol , wherein the catalyst composition comprises a catalytically active component ...

SCR-Active Material

The present invention relates to an SCR-active material, comprising a small-pore zeolite, aluminum oxide and copper, characterized in that it contains 5 to 25 wt-% of aluminum oxide in relation to the entire material and that the copper is present on the aluminum oxide in a first concentration and on the small-pore zeolite in a second concentration. 121-. (canceled)23. The SCR-active material according to claim 22 , wherein the total amount of copper calculated as CuO and based on the total SCR-active material is 1 to 15 wt-%.24. The SCR-active material according to claim 22 , wherein the first concentration is higher than the second concentration.25. The SCR-active material according to claim 22 , wherein the first concentration is at least 1.5 times higher than the second concentration.26. The SCR-active material according to claim 22 , wherein the zeolite has an atomic ratio of copper to backbone aluminum of 0.25-0.6.27. The SCR-active material according to claim 22 , wherein the small-pore zeolite is an aluminosilicate.28. The SCR-active material according to claim 27 , wherein the small-pore zeolite has an SAR value of 5 to 50.29. The SCR-active material according to claim 22 , wherein the small-pore zeolite is a silicoaluminosilicate or aluminophosphate.30. The SCR-active material according to claim 22 , wherein the average crystallite size (d50) of the small-pore zeolite is 0.1 to 20 μm.31. The SCR-active material according to claim 22 , wherein the small-pore zeolite forms a core and the aluminum oxide forms a shell encasing said core.32. The SCR-active material according to claim 22 , wherein it is present in powder form.33. The SCR-active material according to claim 22 , wherein it is present (A) in the form of a coating on a carrier substrate or (B) in the form of a substrate that was extruded in combination with a matrix component.34. The SCR-active material according to claim 33 , wherein the carrier substrate of (A) comprises a combination of an inert ...

Sio2-layered double hydroxide microspheres and methods of making them

A method of making silica-layered double hydroxide microspheres having the formula I : (i) wherein, M z+ and M 'y+ are two different charged metal cations; z = 1 or 2; y = 3 or 4; 0 < x < 0.9; b is 0 to 10; c is 0 to 10; P > 0, q > 0, X n- is an anion; with n > 0 a = z(1-x) + xy-2; and the AMO-solvent is an 100% aqueous miscible organic solvent; comprises the steps: (a) contacting silica microspheres and a metal ion containing solution containing metal ions M z+ and M 'y+ in the presence of a base and an anion solution; (b) collecting the product; and (c) optionally treating the product with AMO-solvent and recovering the solvent treated material to obtain the silica-layered double hydroxide microspheres. Preferably, M in the formula I is Li, Mg, Ni or Ca. Preferably, M' in formula I is Al. The invention further provides silica-layered double hydroxide microspheres having the formula I. The silica-layered double hydroxide microspheres may be used as catalysts and/or catalyst supports.

Hydrorefining catalyst and method for manufacturing hydrorefining catalyst

Hydrorefining catalyst contains 0.1 to 25 wt % in total of at least one hydrogenation active metal element selected from elements of Group 6, Group 8, Group 9, and Group 10 of the Periodic Table, and 0.1 to 3 wt % potassium on a carrier formed of porous inorganic oxide. The concentration distribution of the hydrogenation active metal element is higher in the central part than in the peripheral part of the catalyst, and the concentration distribution of potassium is higher in the peripheral part than in the central part of the catalyst. The pores on the outside surface of the catalyst are not plugged by the metal content of hetero compounds and hetero compounds can be efficiently diffused to inside the catalyst. As a result, long-term retention of a state of high activity is possible.

SiO2-layered double hydroxide microspheres and methods of making them

A method of making silica-layered double hydroxide microspheres having the formula I: (i) wherein, M z+ and M′ y+ are two different charged metal cations; z=1 or 2; y=3 or 4; 0<x<0.9; b is 0 to 10; c is 0 to 10; P>0, q>0, X n− is an anion; with n>0 a=z(1−x)+xy−2; and the AMO-solvent is an 100% aqueous miscible organic solvent; comprises the steps: (a) contacting silica microspheres and a metal ion containing solution containing metal ions M z+ and M′ y+ in the presence of a base and an anion solution; (b) collecting the product; and (c) optionally treating the product with AMO-solvent and recovering the solvent treated material to obtain the silica-layered double hydroxide microspheres. Preferably, M in the formula I is Li, Mg, Ni or Ca. Preferably, M′ in formula I is Al. The invention further provides silica-layered double hydroxide microspheres having the formula I. The silica-layered double hydroxide microspheres may be used as catalysts and/or catalyst supports. (SiO 2 ) p @{[M z+ (1-x) M′ y+ x (OH) 2 ] a+ (X n− ) a/n .b H 2 O. c (AMO-solvent)} q   (I)

catalyst, and process for producing a catalyst

SiO2-layered double hydroxide microspheres and their use as catalyst supports in ethylene polymerisation

A catalyst system is provided which comprises a solid support material having, on its surface, one or more catalytic transition metal complex wherein the solid support material comprises SiO 2 @AMO-LDH microspheres having the formula I: (i) wherein, M z+ and M′ y+ are two different charged metal cations; z=1 or 2; y=3 or 4; 0<x<0.9; b is 0 to 10; c is 0.01 to 10, preferably >0.01 and <10; p>0 q>0; X n− is an anion with n>0, preferably 1−5a=z(1−x)+xy−2; and the AMO-solvent is an 100% aqueous miscible organic solvent. Preferably, M′ in the formula I is Al. Preferably, M in the formula I is Li, Mg or Ca. The catalyst system has use in the polymerization and/or copolymerization of at least one olefin to produce a homopolymer and/or copolymer.

Carrier-nanoparticle complex, method for preparing same, and catalyst comprising same

Nanoparticles including metal oxide having catalytic activity

Core-shell nanoparticles having a core material and a mesoporous silica shell, and a method for manufacturing the core-shell nanoparticles are provided.

Coated photocatalysts

Die vorliegende Erfindung bezieht sich auf ein Photokatalysatorsystem mit einem Photokatalysator, der von einem Erdalkalimetallpolyphosphat umhüllt ist. The present invention relates to a photocatalyst system having a photocatalyst surrounded by an alkaline earth metal polyphosphate.

Upconversion nanohybrid photocatalyst and method for preparing the same

본 발명은 3중항-3중항 소멸 유기분자를 포함하는 코어와, 상기 코어 상에 형성되고 실리카(SiO 2 )를 포함하는 쉘을 포함하는 코어-쉘 캡슐; 상기 쉘 상에 담지된 반도체 나노입자; 및 상기 반도체 나노입자 상에 위치하는 그래핀 옥사이드;를 포함하는 광촉매 나노복합체 및 그 제조방법을 제공하여 반도체 광촉매 반응에서 일반적으로 사용되지 못하고 버려지는 장파장 영역의 빛을 이용하여 과산화수소 생산에 활용하고, 내부의 3중항-3중항 소멸을 이루는 유기분자의 조합을 바꿈으로써 적색 빛뿐만 아니라 녹색 빛 또는 더 장파장의 빛에서 적용 가능한 광촉매 나노복합체를 제공할 수 있다.

A catalyst and its use for the selective hydrodesulfurization of an olefin containing hydrocarbon feedstock

올레핀의 최소의 수소화와 함께 올레핀-함유 탄화수소 공급원료에 존재하는 황 화합물을 매우 낮은 수준으로 선택적으로 탈황시키기 위한 촉매 및 그의 용도가 제공된다. 상기 촉매는, 니켈 화합물, 몰리브데넘 화합물 및 임의로 인 화합물을 함유하고, 몰리브데넘 화합물 및 코발트 화합물로 오버레이된 무기 산화물 기재를 포함한다. 상기 촉매는 또한 그의 총 세공 부피의 많은 부분이 250 옹스트롬 미만의 직경을 갖는 세공 및 1000 옹스트롬 초과의 직경을 갖는 세공에 함유된 바이모달 세공 크기 분포를 갖는 것을 특징으로 한다. Catalysts and uses thereof are provided for the selective desulfurization of sulfur compounds present in olefin-containing hydrocarbon feedstocks to very low levels with minimal hydrogenation of olefins. The catalyst contains a nickel compound, a molybdenum compound and optionally a phosphorus compound, and includes an inorganic oxide substrate overlaid with a molybdenum compound and a cobalt compound. The catalyst is also characterized in that it has a bimodal pore size distribution wherein a large portion of its total pore volume is contained in pores having a diameter less than 250 angstroms and pores having a diameter greater than 1000 angstroms.

Methane steam reforming, using nickel/alumina nanocomposite catalyst or nickel/silica-alumina hybrid nanocomposite catalyst

The present invention relates to a methane steam reforming method using a nickel/alumina nanocomposite catalyst. More particularly, the present invention relates to a method for carrying out steam reforming of methane with a high methane conversion ratio, even under a relatively severe reaction condition including a high space velocity or low steam supply, by using a nickel/alumina nanocomposite catalyst including a support in which nickel metal nanoparticles are supported uniformly at a high content through a melt impregnation process, and a catalyst used therefor. In addition, according to the present invention, the catalyst obtained by the melt impregnation process is used as a first catalyst and mixed with a nickel silica yoke-shell catalyst as a second catalyst to provide a nickel/silica-alumina hybrid nanocatalyst. When applying the hybrid nanocatalyst to a methane steam reforming reaction, it is possible to obtain higher catalytic activity even at a higher temperature of 700°C or more, and thus to carry out steam reforming of methane with a high methane conversion ratio.

Fischer-tropsch synthesis cobalt nano-catalyst based on porous material confinement, and preparation method therefor

본원 발명은 다공성 재료 갇힘 기반의 피셔-트롭쉬 합성 코발트 나노 촉매 및 이의 제조 방법을 제공한다. 본원 발명에 따른 상기 촉매는 템플레이트로서 유기겔을 사용하고 졸-겔 방법에 의해서 제조된다. 금속 성분이 코어로서 사용되며, 다공성 재료가 쉘로서 사용된다. 상기 금속 성분은 제1 금속 성분으로 Co, 제 2 금속 성분으로 Ce, La 및 Zr에서 선택되고, 및 제3 금속 성분으로 Pt, Ru, Rh 및 Re에서 선택된 것이다. Finished 촉매에서 상기 제1 금속 성분은 10 내지 35중량%이고, 제2 금속 성분은 0.5 내지 10중량%이며, 제3 금속 성분은 0.02 내지 2중량% 및 캐리어를 포함한다. 상기 캐리어는 다공성 재로인 것이고, 회전 타원체이며, 이의 성분은 나노 실리카 또는 알루미나이다. 상기 다공성 재료의 기공 직경은 1 내지 20nm이며, 이의 비표면적은 300-500 m 2 /g이고, 활성 성분의 입자 크기는 0.5 내지 20nm이다. 본원 발명에 따른 상기 코어-쉘 구조 코발트 다공성 촉매는 낮은 메탄 선택성의 잇점이 있으며, 높은 촉매 반응성을 갖고, 양호한 C 5+ 선택성을 가지며, 본원 발명의 주요 생성물은 디젤 오일 및 파라핀이다. The present invention provides a porous material trapped based Fischer-Tropsch synthesis cobalt nanocatalyst and a method of making the same. The catalyst according to the invention is prepared by the sol-gel process using an organic gel as a template. A metal component is used as a core, and a porous material is used as a shell. The metal component is selected from Co as the first metal component, Ce, La and Zr as the second metal component, and Pt, Ru, Rh and Re as the third metal component. In the finished catalyst, the first metal component is 10 to 35 wt%, the second metal component is 0.5 to 10 wt%, the third metal component is 0.02 to 2 wt%, and the carrier. The carrier is a porous material, a spheroid, and its component is nanosilica or alumina. The pore diameter of the porous material is 1 to 20 nm, the specific surface area thereof is 300-500 m 2 / g, and the particle size of the active ingredient is 0.5 to 20 nm. The core-shell structured cobalt porous catalyst according to the present invention has the advantages of low methane selectivity, high catalytic reactivity, good C 5+ selectivity, and the main products of the present invention are diesel oil and paraffin.

Type of non-platimum catalyst and method for preparing the same

본 발명은 (ⅰ) 코어, 및 (ⅱ) 상기 코어를 둘러싸는 탄소체 쉘;을 포함하는 비 백금형 촉매로, 상기 코어는 금속 또는 금속 산화물이며, 상기 쉘의 표면에는 도판트가 함유되고, 상기 촉매는 나노-마이크론 단위의 입자크기를 가지는 분말형태의 비 백금형 촉매를 제조함으로써, 상기 촉매는 우수한 개시전위(Onset potential) 및 높은 전류밀도(Current density)와 함께 4-전자(4-electron) 반응에 근접하는 우수한 산소 환원 촉매 성능을 나타내는데 현저한 효과를 나타낸다. 또한, 상기 촉매는 생산 단가가 저렴하고 대량으로 수득할 수 있는 장점으로 인하여, 기존의 백금 촉매를 대체할 수 있으며 가격 경쟁력에 있어서도 획기적인 증대 효과를 나타낼 수 있다. The present invention relates to a non-platinum type catalyst comprising (i) a core, and (ii) a carbon shell surrounding the core, wherein the core is a metal or a metal oxide, a surface of the shell contains a dopant, The catalyst can be prepared by preparing a non-platinum type catalyst in the form of a powder having a particle size of nano-micron units, the catalyst having an excellent onset potential and a high current density, ) &Lt; / RTI &gt; reaction. &Lt; tb &gt;&lt; TABLE &gt; In addition, since the catalyst can be produced at a low cost and can be obtained in a large amount, it can replace the existing platinum catalyst and exhibit a remarkable increase in price competitiveness.

Rhodium-containing catalysts for treating automotive exhausts

FIELD: chemical industry.SUBSTANCE: invention relates to a catalytic material for processing an exhaust stream of an internal combustion engine, comprising: a porous heat-resistant metal oxide substrate containing aluminum oxide, in form of aggregated particles; and rhodium-containing polymetallic nanoparticles, wherein at least 50 wt % of nanoparticles are located inside aggregated particles of substrate, wherein average size of aggregated substrate particles is 1 micron or more, as measured by Scanning Electron Microscopy (SEM), wherein average size of primary particles of rhodium-bearing polymetallic nanoparticles is less than 100 nm, as measured by Transmission Electronic Microscopy (TEM), wherein content of rhodium (Rh), bonded to substrate material ranges from 0.1 to 10.0 wt % rhodium in catalytic material, wherein rhodium-bearing polymetallic nanoparticles contain bimetallic palladium-rhodium nanoparticles, and wherein the weight ratio of Pd:Rh ranges from 1:1 to 3:1. Invention also relates to a catalytic composite for exhaust flow of an internal combustion engine, to a system for treating an exhaust stream, to exhaust gases treatment method and to method of producing catalytic material.EFFECT: technical result consists in achieving improved conversion of hydrocarbons and nitrogen oxides.29 cl, 19 dwg, 3 tbl, 4 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК B01J 23/46 B01J 23/44 B01J 35/08 B01J 37/04 B01J 37/08 B01J 37/16 (11) (13) 2 730 496 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B01J 23/46 (2020.02); B01J 23/44 (2020.02); B01J 35/08 (2020.02); B01J 37/04 (2020.02); B01J 37/08 (2020.02); B01J 37/16 (2020.02) (21)(22) Заявка: 2017130334, 29.01.2016 29.01.2016 Дата регистрации: 24.08.2020 29.01.2015 US 62/109,500 (43) Дата публикации заявки: 28.02.2019 Бюл. № 7 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 29.08.2017 (86) ...

Method for synthesis of metal nanoprticle enwrapped by carbon shell originating from polymer coating on support

본 발명은 고분자층과 금속 전구체를 이용한 탄소껍질을 포함하는 금속 나노입자의 제조방법 및 상기 제조방법에 의해 제조된 탄소껍질을 포함하는 금속 나노입자에 관한 것으로서, 직접적인 열환원 공정을 통해 금속 전구체의 환원과 탄소껍질의 형성을 동시에 일어나도록 할 수 있으므로 껍질이 균일한 두께의 탄소껍질을 제조할 수 있고 이로 인해 나노입자의 응집 및 전이금속의 용출을 효과적으로 막을 수 있다. 이는 기존에 나뉘어있던 나노입자의 형성과 탄소껍질의 형성을 일원화시켜 공정을 단순히 함과 동시에 형성된 탄소껍질이 나노입자의 안정성을 높여 촉매로서 높은 내구성을 확보할 수 있도록 한다. The present invention relates to a method for preparing metal nanoparticles including a carbon shell using a polymer layer and a metal precursor, and a metal nanoparticle including a carbon shell prepared by the above method, wherein the metal precursor is produced through a direct thermal reduction process. Since the reduction and the formation of the carbon shell can occur simultaneously, a carbon shell having a uniform thickness can be produced, thereby effectively preventing the aggregation of nanoparticles and the elution of transition metals. This unifies the formation of the previously divided nanoparticles and the formation of the carbon shell to simplify the process, and at the same time, the formed carbon shell increases the stability of the nanoparticles to ensure high durability as a catalyst.

Catalyst for oxydizing electrode in water electrolyzing device and method of preparing the same

The present invention relates to an oxide catalyst for a water electrolysis apparatus and a method for producing the same, and more particularly, to an oxygen electrode catalyst for use in a water electrolysis apparatus using cobalt which can be easily obtained at a low cost and has an oxygen generating activity and durability equal to or higher than that of a conventional expensive noble metal oxide catalyst An oxygen electrode catalyst for a water electrolytic solution can be produced.

CATALYST INCLUDING AN ACTIVE PHASE OF NICKEL IN THE FORM OF SMALL PARTICLES DISTRIBUTED AS A CRUST

Catalyseur comprenant une phase active à base de nickel et un support d’alumine caractérisé en ce que :- le nickel est réparti à la fois sur une croûte en périphérie du support, et à cœur du support, l'épaisseur de ladite croûte étant comprise entre 2% et 15% du diamètre du catalyseur ;- le ratio de densité en nickel entre la croûte et le cœur est supérieur strictement à 3 ;- ladite croûte comprend entre 40% et 80% en poids en élément nickel par rapport au poids total de nickel contenu dans le catalyseur ;- la taille des particules de nickel dans le catalyseur est inférieure à 7 nm. Catalyst comprising an active phase based on nickel and an alumina support characterized in that: - the nickel is distributed both on a crust at the periphery of the support, and at the heart of the support, the thickness of said crust being included between 2% and 15% of the diameter of the catalyst; - the nickel density ratio between the crust and the core is strictly greater than 3; - said crust comprises between 40% and 80% by weight of nickel element relative to the total weight of nickel contained in the catalyst; - the size of the nickel particles in the catalyst is less than 7 nm.

PROCESS FOR THE PREPARATION OF ZEOLITHE BETA CRYSTALS IN THE FORM OF A HOLLOW BOX CONTAINING A METAL ON ITS INTERNAL SURFACE AND IN ITS WALLS

On décrit un procédé de préparation du matériau comprenant au moins une zéolithe Beta dont les cristaux se présentent sous la forme de nano boites creuses, et au moins une ou plusieurs nanoparticule(s) métallique(s), la ou lesdites nanoparticule(s) métallique(s) étant située(s) à la fois sur la surface interne desdits nano boites et à l'intérieur des parois desdites nano boites creuses, le procédé comprenant au moins les étapes suivantes : i) la synthèse d'un zincosilicate microporeux CIT-6 de type structural *BEA ii) l'introduction de nanoparticules métalliques dans les cristaux de CIT-6 obtenues à l'issue de l'étape i), iii) le mélange dans une solution aqueuse des cristaux de CIT-6 obtenus à l'étape ii) avec au moins une source d'un oxyde XO2, au moins une source d'un oxyde Y2O3, et au moins une source d'au moins un métal alcalin et/ou alcalino-terreux M de valence n, n étant un entier supérieur ou égal à 1 pour obtenir un gel, le traitement hydrothermal du gel obtenu à l'issue de l'étape iii), à une température comprise entre 110°C et 180°C, de préférence entre130°C et 60° C, pendant une durée comprise entre 1 jours et 5 jours, de préférence entre 1 et 3 jours, pour synthétiser une zéolithe beta dont les cristaux se présentent sous la forme de nano boites creuses, et dans laquelle la ou lesdites nanoparticule(s) métallique(s) sont située(s) à la fois sur la surface interne des nano boites creuses et à l'intérieur de la cavité desdites nano boites creuses. A process for preparing the material comprising at least one Beta zeolite whose crystals are in the form of hollow nano-boxes, and at least one or more metallic nanoparticles, said nanoparticle (s) metal (s) being located at the same time on the inner surface of said nano boxes and inside the walls of said hollow nano boxes, the process comprising at least the following steps: i) the synthesis of a microporous zinc silicate CIT- 6 of structural type * BEA ii) the ...

CATALYST INCLUDING AN ACTIVE PHASE OF NICKEL IN THE FORM OF SMALL PARTICLES DISTRIBUTED AS A CRUST

Catalyseur comprenant une phase active à base de nickel et un support d’alumine caractérisé en ce que :- le nickel est réparti à la fois sur une croûte en périphérie du support, et à cœur du support, l'épaisseur de ladite croûte étant comprise entre 2% et 15% du diamètre du catalyseur ;- le ratio de densité en nickel entre la croûte et le cœur est supérieur strictement à 3 ;- ladite croûte comprend entre 40% et 80% en poids en élément nickel par rapport au poids total de nickel contenu dans le catalyseur ;- la taille des particules de nickel dans le catalyseur est inférieure à 7 nm. Catalyst comprising an active phase based on nickel and an alumina support characterized in that: - the nickel is distributed both on a crust at the periphery of the support, and at the heart of the support, the thickness of said crust being included between 2% and 15% of the diameter of the catalyst; - the nickel density ratio between the crust and the core is strictly greater than 3; - said crust comprises between 40% and 80% by weight of nickel element relative to the total weight of nickel contained in the catalyst; - the size of the nickel particles in the catalyst is less than 7 nm.

Highly sinter-stable metal nanoparticles supported on mesoporous graphitic particles and their use

The present invention refers to highly sinter-stable metal nanoparticles supported on mesoporous graphitic spheres, the so obtained metal-loaded mesoporous graphitic particles, processes for their preparation and the use thereof as catalysts, in particular for high temperature reactions in reducing atmosphere and cathode side oxygen reduction reaction (ORR) in PEM fuel cells.

Photocatalytic composition containing two kinds of semiconductors including those composed of metal particles and cerium oxide

Bulk-metal crystalline transition metal based heterogeneous catalysts, methods of making and uses thereof

Bulk-metal crystalline catalysts for conversion of synthesis gas to olefins are described. Also described are method of making the catalyst. A bulk metal catalyst can include a first transition metal core surrounded by a silica-alkaline earth metal framework crystal lattice and includes at least one transition metal atoms bound to periphery of the framework crystal lattice. The two transition metals can be iron (Fe), cobalt (Co), manganese (Mn), rhodium (Rh), ruthenium (Ru) and combinations thereof.

Bifunctional catalyst comprising phosphorous

A bifunctional catalyst for example for conversion of oxygenates, said bifunctional catalyst comprising zeolite, alumina binder, Zn and P, wherein Zn is present at least partly as ZnAl2O4.

Bifunctional catalyst comprising phosphorous

A bifunctional catalyst for example for conversion of oxygenates, said bifunctional catalyst comprising zeolite, alumina binder, Zn and P, wherein Zn is present at least partly as ZnAl2O4.

Cobalt-based fischer-tropsch synthesis catalyst coated with mesoporous materials and preparation method therefor

Method for preparing carbon black based shaped porous products

BIFUNCTIONAL CATALYST

Бифункциональный катализатор для конверсии оксигенатов, содержащий цеолит, алюмооксидное связующее вещество и цинк, отличающийся тем, что цинк, по меньшей мере, частично присутствует в виде ZnAlO. A bifunctional catalyst for the conversion of oxygenates, containing a zeolite, alumina binder and zinc, characterized in that zinc is at least partially present as ZnAlO.

Catalyst comprising cobalt core and carbon shell for alkaline oxygen reduction and method for preparing the same

The present invention relates to a catalyst comprising a carbon support and core-shell nanoparticles carried on the carbon support, wherein the core of the core-shell nanoparticle is a cobalt metal containing no heteroatom and the shell contains carbon. Accordingly, the catalyst for oxygen reduction reaction of the present invention is a catalyst in which cobalt-core and carbon-shell nanoparticles are supported on the carbon support through a ligand stabilization method and heat treatment, and can be synthesized so as to have a high degree of dispersion with nano-sized particles. Particularly, the catalyst can be used to enhance oxygen reduction activity and durability in a fuel cell driven in an alkaline atmosphere, and thus can be applied to a cathode as an electrode catalyst, thereby enhancing an efficiency of the fuel cell.

Hollow nano rattle particle for preparing less-noble metal nanoparticle and less-noble metal nanoparticle prepared thereby

본 발명은 비귀금속 또는 이의 합금을 기재로 하는 나노입자의 제조에 적합한 속빈 나노래틀 입자 및 이를 통한 시드-엔지니어링(seed-engineering)에 의한 나노입자의 제조방법에 관한 것이다. 본 발명의 동공의 다공성 실리카 나노껍질 및 상기 동공에 갇힌 금 나노결정을 포함하는 나노 래틀 입자는 하이브리드 나노결정을 이용하여 간단하고 용이하게 제조할 수 있으며, 니켈뿐만 아니라 니켈과 다른 금속들과의 합금으로 이루어진 비귀금속 나노 결정 합성의 주형으로서 작용하여 소정 크기의 다양한 금속 코어 및 다공성 실리카 껍질를 포함하는 나노입자의 제조를 위한 나노반응기로서 사용될 수 있고 제조된 나노입자는 후 변형 또한 가능하다. 아울러, 본 발명의 비귀금속 코어 및 다공성 실리카 껍질을 포함하는 나노입자는 수성 매질에서 안정한 콜로이드를 생성하고, 가혹한 조건에서도 안정하며, 활성 금속 코어에 반응 분자가 용이하게 접근할 수 있어 촉매 및 바이오센서로서 유용하게 사용될 수 있다.

Graphene Multilayer Encapsulated Metal Nanoparticles and Nano Energetic Materials Composite with it and Method for Fabricating the same

본 발명은 다층 그래핀이 코팅된 금속 나노입자를 합성하고, 이를 고에너지물질 기저에 적용하여 플래쉬 섬광 조사에 의한 광학적 점화가 가능하도록 한 다층 그래핀이 코팅된 금속 나노 입자 및 이를 갖는 고에너지물질 복합체 그리고 이들의 제조 방법에 관한 것으로, 다층 그래핀이 코팅된 금속 나노 입자를 갖는 고에너지물질 복합체는 서로 다른 평균 직경을 갖는 이중모드(bimodal) 상태의 금속촉매입자 표면에 다층 그래핀이 성장한 형상을 갖는 다층 그래핀이 코팅된 금속 나노입자;다층 그래핀이 코팅된 금속 나노입자가 내부에 분산되는 나노고에너지물질;을 포함하고, 특정한 크기의 에너지를 갖는 플래쉬 섬광을 조사하면, 플래쉬 섬광의 빛 에너지를 흡수한 다층의 그래핀이 주변의 공기분자를 진동시켜 높은 열을 발생시키고 발생된 열이 내부에 위치한 금속촉매입자로 전달되어 금속촉매입자를 산화시켜 점화되는 것이다.

Bulk-metal crystalline transition metal based heterogeneous catalysts, methods of making and uses thereof

Method for Preparimg AuPt Nanocrystals with Electrocatalytic Activity

본 발명은 금 전구체 및 백금 2가 전구체를 실리카(SiO 2 ) 나노 구에 주입하고 어닐링한 후 실리카를 제거하여, 계면활성제를 포함하지 않고 촉매 활성이 강화된 금-백금 합금 나노결정을 제조하는 방법에 관한 것이다.

Use of hollow zeolites doped with bimetallic or trimetallic particles for hydrocarbon reforming reactions

Catalysts useful for hydrocarbon reforming reactions are described. A catalyst can include a bimetallic (M1M2) or trimetallic (M1M2M3) nanostructure, or oxides thereof, and a hollow zeolite support. The hollow space in the zeolite support includes the bi-metallic (M1M2) or tri-metallic (M1M2M3) nanostructure, or oxides thereof.

Zeolite compositions and preparation and use thereof

This invention relates to novel compositions of zeolites or microporous metallosilicates characterized by a continuous spatial distribution of the metal and silicon in the crystals and characterized by a crystal surface enriched in silicon relative to the internal part of the same crystals. This invention also relates to a synthesis method of producing these metallosilicates with spatial distribution of the constituting elements. These novel zeolitic compositions can be used in various hydrocarbon conversion reactions. The crystalline metallosilicates can be selected from the group consisting of aluminosilicates, gallosilicates, ferrosilicates, titanosilicates and borosilicates.

Catalyst for water gas shift reaction at middle temperature, preparation method thereof, and hydrogen preparation method using same

Metal modified Y zeolite, its preparation and use

The present invention relates to a metal modified Y zeolite, its preparation and use. Said zeolite contains 1-15 wt % of IVB group metal as oxide and is characterized in that the ratio of the zeolite surface's IVB group metal content to the zeolite interior's IVB group metal content is not higher than 0.2; and/or the ratio of the distorted tetrahedral-coordinated framework aluminum to the tetrahedral-coordinated framework aluminum in the zeolite lattice structure is (0.1-0.8):1.

BIFUNCTIONAL CATALYST COMPRISING EVENLY DISTRIBUTED PHOSPHORUS

o catalisador bifuncional para conversão de oxigenados, cujo catalisador bifuncional compreende zeólita, aglutinante de alumina, zn e p, em que p está distribuído uniformemente através do catalisador. the bifunctional catalyst for converting oxygenates, which bifunctional catalyst comprises zeolite, alumina binder, zn and p, wherein p is uniformly distributed throughout the catalyst.

New catalyst comprising hydro-dehydrogenating metal and carrier comprising porous core and peripheral porous layer having a pore distribution measured by mercury porosimetry, used for hydrotreating heavy loads

Catalyst comprising at least one hydro-dehydrogenating metal consisting of group VIB metals of the periodic table, a carrier comprising a porous core having a pore distribution, measured by mercury porosimetry, such that the volume of pores have a diameter of greater than 1000 Å and have an amount of comprise 5-60%, and a peripheral porous layer having a pore distribution, derived from the measurement of mercury porosimetry on the core and catalyst such that the volume of pores have a diameter of greater than 1000 Å and have an amount of at least 50%, is new. An independent claim is included for hydrotreating at least one hydrocarbon charge of which at least 1 wt.% of the compounds has a boiling point above 500[deg] C, by implementing the catalyst, where the process is performed at a temperature of 320-480[deg] C, a total pressure of 3-30 MPa and a space velocity of 0.05-10 volumes of charge per volume of catalyst per hour and a volume ratio of hydrogen gas of the liquid charge is 100-5000 Nm 3>/Nm 3>.

Selective hydrogenation catalyst, method for producing selective hydrogenation catalyst, and selective hydrogenation method

Process for the selective oxidation of an aldose

Metal oxide catalyst for selective catalytic reduction

A non-vanadium based metal oxide catalyst composition is provided. The catalyst composition comprises at least one metal oxide, comprising manganese oxide and being dispersed on the support, and a support comprising particles of composite oxide of aluminum and at least one metal selected from cerium, manganese and titanium, wherein aluminum is present in the composite oxide in an amount of from 50% to 80% by weight, calculated as Al 2O 3, based on the total weight of the composite oxide, and wherein manganese oxide is present in the metal oxide catalyst composition in an amount of from 2.5% to 10% by weight, calculated as MnO 2, based on the total weight of the metal oxide catalyst composition.

Composite particle for a catalyst and catalyst support and manufacturing method for the same

The present invention relates to composite particles which are suitably used for a low temperature fuel cell, a secondary battery, a drug delivering carrier, and the like, while replacing whole or part of platinum having a high price. According to the present invention, the composite particles comprise: a carbon-based support body; a plurality of nanoparticles made of a substance including transition metal formed on the carbon-based support body; and a carbon-based shell formed on the surface of the plurality of nanoparticles.

Engineering high-performance palladium core magnesium oxide porous shell nanocatalysts via heterogeneous gas-phase synthesis

A novel catalyst includes a plurality of nanoparticles, each nanoparticle including a core made of a catalytic metal and a porous shell surrounding the core, made of metal oxide, the porous shell preserving a catalytic function of the core and reducing reduction of the core and coalescence of the nanoparticles.

Method for producing a composite material

The present invention relates to a method for producing a composite material, which comprises a carrier material and an ionic liquid, and to a composite material and to the use thereof as a synthesis catalyst. The method involves spray-impregnating a solution, suspension, or emulsion containing the ionic liquid onto the carrier material fluidized in a fluidized bed or moving bed.

Catalyst manufacturing by multiple unit operations in a mixer reactor

A process for the preparation of a supported catalyst, wherein at least three steps of the following process steps i) impregnation of a catalyst support, ii) drying of the catalyst precursor obtained, iii) post treatment of the dried catalyst precursor by at least one of steps iiia) calcination and/or iiib) reduction with a reducing agent are carried out in one specific free-fall mixer reactor; and a supported catalyst prepared by said process.

Rare-earth-manganese/cerium-zirconium-based composite compound, method for preparing same and use thereof

A rare earth manganese/cerium-zirconium-based composite compound, a preparation method therefor and an application thereof. The composite compound has a core-shell structure, which is as represented by a general formula: ARE cB aO b-(1-A)Ce xZr (1-x-y)M yO 2-z, wherein 0.1=A=0.3, preferably 0.1=A=0.2. The main component of a shell is a rare earth manganese oxide, which is as represented by a general formula: RE cMn aO b, wherein RE is a combination of one or more rare earth elements; B is Mn or a combination of Mn and a transition metal element; 1=a=8; 2=b=18; 0.25=c=4. The main component of a core is a cerium-zirconium composite oxide, which is as represented by a general formula: Ce xZr (1-x-y)M yO 2-z, wherein M is one or more non-cerium rare earth elements; 0.1=x=0.9; 0=y=0.3; 0.01=z=0.3. The composite compound improves the oxygen storage capacity of a cerium-zirconium material by means of an interfacial effect so as to improve the conversion rate of a nitrogen oxide.

Cobalt-based nano catalyst and preparation method thereof

A cobalt-based nano catalyst including a metal combination as a core and a porous material as a shell. The metal combination includes a first metal component Co, a second metal component selected from Ce, La, and Zr, and a third metal component selected from Pt, Ru, Rh, and Re. The catalyst includes between 10 and 35 wt. % of the first metal component, between 0.5 and 10 wt. % of the second metal component, between 0.02 and 2 wt. % of the third metal component, and a carrier. The carrier is a porous material such as nano silica or alumina. The carrier is in the shape of a spheroid, has a pore size of between 1 and 20 nm and a specific area of between 300 and 500 m 2 /g. The active component of the catalyst has a particle size of between 0.5 and 20 nm.

PHOTOCATALYTIC COMPOSITION COMPRISING METALLIC PARTICLES AND TWO SEMICONDUCTORS INCLUDING CERIUM OXIDE

L'invention concerne une composition contenant un premier semi-conducteur SC1, des particules comportant un ou plusieurs élément(s) M à l'état métallique choisis parmi un élément des groupes IVB, VB, VIB, VIIB, VIIIB, IB, IIB, IIIA, IVA et VA de la classification périodique des éléments, et un deuxième semi-conducteur SC2 comportant de l'oxyde de cérium, ledit premier semi-conducteur SC1 étant en contact direct avec lesdites particules comportant un ou plusieurs élément(s) M à l'état métallique, lesdites particules étant en contact direct avec ledit deuxième semi-conducteur SC2 comportant de l'oxyde de cérium de telle sorte que le deuxième semi-conducteur SC2 recouvre au moins 50 % de la surface des particules comportant un ou plusieurs élément(s) M à l'état métallique. L'invention porte également sur son procédé de préparation ainsi que sur son application en photocatalyse The invention relates to a composition containing a first semiconductor SC1, particles comprising one or more element (s) M in the metallic state chosen from an element of groups IVB, VB, VIB, VIIB, VIIIB, IB, IIB, IIIA, IVA and VA of the periodic table of elements, and a second semiconductor SC2 comprising cerium oxide, said first semiconductor SC1 being in direct contact with said particles comprising one or more element (s) M to the metallic state, said particles being in direct contact with said second semiconductor SC2 comprising cerium oxide so that the second semiconductor SC2 covers at least 50% of the surface of the particles comprising one or more elements (s) M in the metallic state. The invention also relates to its preparation process as well as its application in photocatalysis

Fischer-tropsch synthesis cobalt nano-catalyst based on porous material confinement, and preparation method therefor

The present invention provides a Fischer-Tropsch synthesis cobalt nano-catalyst based on porous material confinement, and a preparation method therefor. The catalyst of the present invention uses organogel as a template and is prepared by means of a sol-gel method; metal components are used as the core and the porous material is used as the shell. The metal components comprise a first metal component Co; a second metal component, being one of Ce, La, and Zr, and a third metal component, being one of Pt, Ru, Rh, and Re. In a finished catalyst, the first metal component accounts for 10%-35% by weight, the second metal component accounts for 0.5% to 10% by weight, the third metal component accounts for 0.02% to 2% by weight, and the rest is a carrier. The carrier is the porous material and is spherical, and the component thereof is nano-silica or alumina. The pore diameter of the porous material is 1-20 nm, the surface area is 300-500 m2/g, and the particle size of the active component is 0.5-20 nm. The core-shell structure cobalt porous catalyst of the present invention has the advantages of low methane selectivity, high catalysis reactivity, and good C5+ selectivity, and the main products of the present invention are diesel oil and paraffin.

Monodispersed iron-based catalyst for fischer-tropsch process, preparation method therefor and use thereof

Method of producing propylene and ethylene with a core-shell ZSM catalyst

A method of producing propylene and ethylene from a butene-containing hydrocarbon stream by cracking olefin compounds in the butene-containing hydrocarbon stream in the presence of a core-shell ZSM catalyst, wherein the core-shell ZSM catalyst comprises a ZSM-5 core and a silica shell disposed thereon. Various embodiments of the method of producing propylene and ethylene, and the method of making the core-shell ZSM catalyst are also provided.

SHELL CATALYST, PROCESS FOR ITS MANUFACTURE AND USE.

Die vorliegende Erfindung betrifft einen Schalenkatalysator, ein Verfahren zu dessen Herstellung sowie die Verwendung des erfindungsgemäben Schalenkatalysator. The present invention relates to a coated catalyst, a process for its production and the use of the coated catalyst according to the invention.

Carrier-nanoparticle complex, method for preparing same, and catalyst comprising same

The present specification relates to a carrier-nanoparticle complex, a method for preparing the same, and a catalyst comprising the same.

Additive curable silicone composition

Catalyst of fisher-tropsh synthesis based on cobalt covered with mesoporous materials and method of its production

FIELD: chemistry. SUBSTANCE: Fischer-Tropsch synthesis catalyst based on cobalt covered with a mesoporous material and method for its production are described. The catalyst comprises a silica medium, rich in the surface-active component of cobalt and a selective promoter of zirconium; from the outside, the active component of cobalt and a selective promoter of zirconium is covered with a layer of shell mesoporous material. The production method includes obtaining silica media saturated with zirconium, obtaining the primary Fischer-Tropsch synthesis catalyst based on cobalt on the silica medium, the preparation of the solution precursor of the mesoporous materials, further immersion, crystallization, washing, drying, and calcining to obtain the Fischer-Tropsch synthesis catalyst based on cobalt with a coating of the mesoporous materials. The active ingredient is covered and protected by a layer of the mesoporous material shell, the thickness of the shell is regulated, the catalyst has a long lifetime, a high reactivity, and a good stability. The pore structure of the mesoporous materials provides a channel for diffusion of CO and H 2 , the selectivity with respect to C 5 + is high, and the selectivity with respect to methane is low. The catalyst is particularly suitable for slurry bubble column reactors or hull reactors with continuous mixing. EFFECT: increase in the catalyst activity. 22 cl, 7 dwg, 3 tbl, 8 ex

Bifunctional Catalyst comprising evenly distributed Phosphorous

A bifunctional catalyst for conversion of oxygenates, said bifunctional catalyst comprising zeolite, alumina binder, Zn and P, wherein P is evenly distributed across the catalyst. [Figure. 3]

fischer-tropsch synthesis of cobalt nanoparticles based on porous confinement material

d e c l a r a ç ã o declaramos que o presente depósito está sendo efetuado sem resumo e que a mesma será juntada dentro do prazo legal para complementação do pedido de patente. porto alegre/rs, 23 de maio de 2014. _______________________________ leão propriedade intelectual api/br 2101 dr. gustavo bahuschewskyj corrêa oab/rs 69.748 –api/br 2039 2 milton leão barcellos norma scherer barcellos milton lucídio leão barcellos cesar alexandre leão barcellos gustavo bahuschewskyj corrêa l e ã o propriedade intelectual desde 1957 advogados e agentes da propriedade industrial brasil e exterior marcas / patentes desenhos industriais direitos autorais software / contratos transferência de tecnologia milton leão barcellos norma scherer barcellos milton lucídio leão barcellos gustavo bahuschewskyj corrêa laura luce maisonnave cristiano prestes braga lucas saretta ferrari l e ã o propriedade intelectual desde 1957 advogados e agentes da propriedade industrial brasil e exterior marcas / patentes desenhos industriais direitos autorais software / contratos transferência de tecnologia avenida carlos gomes, 403, 8º andar, porto alegre/rs fones/fax:+55 51 3224-7896/3226-0624/3286-6707 home page: www.leao.adv.br e-mail: leao@leao.adv.br We declare that the present deposit is being made without a summary and that it will be added within the legal term to complete the patent application. porto Alegre/rs, May 23, 2014. ___________________________ Leão intellectual property api/br 2101 dr. gustavo bahuschewskyj corrêa oab/rs 69,748 –api/br 2039 2 milton Leão Barcellos Norma Scherer Barcellos Milton Lucidio Leão Barcellos Cesar Alexandre Leão Barcellos Gustavo Bahuschewskyj Correa l e ã o intellectual property since 1957 industrial property lawyers and agents brazil designs and foreign trademarks / patents industrial copyrights software / contracts technology transfer milton Leão barcellos norma scherer Barcellos Milton Lucidio Leão Barcellos Gustavo Bahuschewskyj Correa laura luce ...

METAL CONTINUED CATALYSTS AND PROCEDURES FOR PRODUCING THEREOF