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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 1722. Отображено 100.
08-11-2012 дата публикации

Method for synthesizing bio-based pyridine and picolines

Номер: US20120283446A1
Автор: Jean-Francois Devaux, Jean-Luc Dubois
Принадлежит: Arkema France SA

The present invention relates to a method for synthesizing bio-based pyridine and picolines, said method including at least the following steps: a first step involving subjecting a glycerol filler, created from the methanolysis of vegetable oils or animal fats, to a dehydration reaction leading to acrolein; a second step involving partial condensation of the effluent from the first step so as to separate a water-rich flow as well as an acrolein-rich flow; and a third step involving reacting the acrolein from the preceding step with acetaldehyde in the presence of ammonia so as to obtain, by means of a condensation reaction, the biobased pyridine and picolines.

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Номер записи: 1
13-06-2013 дата публикации

CATALYSED SUBSTRATE MONOLITH

Номер: US20130149221A1
Автор: BLAKEMAN PHILIP GERALD, BROWN Gavin Michael, CHATTERJEE SOUGATO, CHIFFEY ANDREW FRANCIS, GAST JANE, PHILLIPS PAUL RICHARD, RAJARAM RAJ RAO, Spreitzer Glen, WALKER ANDREW PETER
Принадлежит: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

A catalysed substrate monolith for use in treating exhaust gas emitted from a lean-burn internal combustion engine, which catalysed substrate monolith comprising a first washcoat coating and a second washcoat coating , wherein the first washcoat coating comprises a catalyst composition comprising at least one platinum group metal (PGM) and at least one support material for the at least one PGM, wherein at least one PGM in the first washcoat coating is liable to volatilise when the first washcoat coating is exposed to relatively extreme conditions including relatively high temperatures, wherein the second washcoat coating comprises at least one metal oxide for trapping volatilised PGM and wherein the second washcoat coating is oriented to contact exhaust gas that has contacted the first washcoat coating. 1. A catalysed substrate monolith for use in treating exhaust gas emitted from a lean-burn internal combustion engine , which catalysed substrate monolith comprising a first washcoat coating and a second washcoat coating , wherein the first washcoat coating comprises a catalyst composition comprising at least one platinum group metal (PGM) and at least one support material for the at least one PGM , wherein at least one PGM in the first washcoat coating is liable to volatilise when the first washcoat coating is exposed to relatively extreme conditions including relatively high temperatures , wherein the second washcoat coating comprises at least one metal oxide for trapping volatilised PGM and wherein the second washcoat coating is oriented to contact exhaust gas that has contacted the first washcoat coating.2. The catalysed substrate monolith according to claim 1 , wherein the at least one PGM in the first washcoat coating comprises platinum.3. The catalysed substrate monolith according to claim 2 , wherein the at least one PGM in the first washcoat coating comprises both platinum and palladium4. The catalysed substrate monolith according to claim 3 , wherein a ...

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Номер записи: 2
15-08-2013 дата публикации

PRODUCTION OF GRAPHENE AND NANOPARTICLE CATALYSTS SUPPORTED ON GRAPHENE USING MICROWAVE RADIATION

Номер: US20130211106A1
Автор: Abdelsayed Victor, Abouzeid Khaled M., Afshani Parichehr, Alkhathlan Hamad Zaid, Alothman Zeid Abdullah M., Dai Qilin, El-Shall M. Samy, Gupton Frank, Hassan Hassan M.A., Khder Abd EI Rahman S., Siamaki Ali R.
Принадлежит:

Microwave irradiation is used to synthesize graphene and metallic nanocatalysts supported on graphene either by solid or solution phase. In solid phase methods, no solvents or additional reducing agents are required so the methods are “environmentally friendly” and economical, and the graphene and nanocatalysts are substantially free of residual contaminants. Recyclable, high efficiency Pd nanocatylysts are prepared by these methods.

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Номер записи: 3
29-08-2013 дата публикации

HYDROGENATION CATALYST

Номер: US20130225882A1
Автор: Merkel Daniel C., TUNG HSEUH S., WANG HAIYOU
Принадлежит: HONEYWELL INTERNATIONAL INC.

An alpha-alumina support for a hydrogenation catalyst useful in hydrogenating fluoroolefins is provided. 1. A composition comprising:a. about 90 to about 99.9 of alumina, wherein said alumina is at least about 90 wt. % alpha-alumina; andb. about 0.1 to about 10 weight percent of at least one zero-valent metal, wherein said zero-valent metal is selected from the group consisting of Pd, Ru, Pt, Rh, Ir, Fe, Co, Ni, Cu, Ag, Re, Os, and Au.2. An article of manufacture comprising a supported hydrogenation catalyst , wherein said supported hydrogenation catalyst comprises:a. a support comprising alpha-alumina and having at least one surface, andb. at least one zero-valent metal disposed on at least a portion of said surface, wherein said zero-valent metal is present in an amount from about 0.1 to about 10 weight percent based upon the total weight of the support and reduced zero-valent metal.3. The article of wherein said zero-valent metal is selected from the group consisting of Pd claim 2 , Ru claim 2 , Pt claim 2 , Rh claim 2 , Ir claim 2 , Fe claim 2 , Co claim 2 , Ni claim 2 , Cu claim 2 , Ag claim 2 , Re claim 2 , Os claim 2 , and Au.4. The article of wherein said support comprises at least about 50 wt. % alpha-alumina.5. The article of wherein said support comprises at least about 75 wt. % alpha-alumina.6. The article of wherein said support consists essentially of said alpha-alumina.7. The article of wherein said zero-valent metal is selected from the group consisting of Pd claim 6 , Ru claim 6 , Pt claim 6 , Rh claim 6 , Ir claim 6 , Fe claim 6 , Co claim 6 , Ni claim 6 , Cu claim 6 , Ag claim 6 , Re claim 6 , Os claim 6 , and Au8. The article of wherein said metal is Pd.9. The article of wherein said metal comprises about 0.1 to about 5 weight percent of the combined weight of said catalyst and said support.10. The article of wherein said metal comprises about 0.1 to about 1 weight percent of the combined weight of said catalyst and said support.11. A method for ...

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Номер записи: 4
10-10-2013 дата публикации

Synthesis of Nanoparticles Using Ethanol

Номер: US20130264198A1
Автор: Wang Jia Xu
Принадлежит: Brookhaven Science Associates, LLC

The present disclosure relates to methods for producing nanoparticles. The nanoparticles may be made using ethanol as the solvent and the reductant to fabricate noble-metal nanoparticles with a narrow particle size distributions, and to coat a thin metal shell on other metal cores. With or without carbon supports, particle size is controlled by fine-tuning the reduction power of ethanol, by adjusting the temperature, and by adding an alkaline solution during syntheses. The thickness of the added or coated metal shell can be varied easily from sub-monolayer to multiple layers in a seed-mediated growth process. The entire synthesis of designed core-shell catalysts can be completed using metal salts as the precursors with more than 98% yield; and, substantially no cleaning processes are necessary apart from simple rinsing. Accordingly, this method is considered to be a “green” chemistry method. 1. A method for producing nanoparticles , the method comprising:dissolving a first metal salt in ethanol;heating the combination of the first metal salt and the ethanol to a first temperature sufficient to partially reduce first metal ions of the first metal salt;adding an alkaline solution, to substantially fully reduce the first metal ions, thereby causing precipitation of nanoparticles.2. The method of wherein the first temperature is between about 50° C. and about 120° C.3. A method for producing atomically ordered core-shell nanoparticles claim 1 , the method comprising:combining nanoparticle cores comprising a first metal and a second metal salt with ethanol;heating the combination of the nanoparticle cores, second metal salt, and the ethanol to a second temperature high enough to substantially fully reduce second metal ions of the second metal salt onto the nanoparticle cores and form a conformal shell of second metal around the nanoparticle cores.4. The method of claim 3 , wherein the second temperature is sufficiently low to prevent formation of second metal ...

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Номер записи: 5
31-10-2013 дата публикации

THIN FILM TUBE REACTOR

Номер: US20130289282A1
Автор: Raston Colin L.
Принадлежит: The University of Western Australia

A thin film tube reactor comprising a tube having a longitudinal axis, an inner cylindrical surface, a closed end and an open end, wherein the tube is rotatable about the longitudinal axis and wherein the angle of the longitudinal axis relative to the horizontal is variable between about 0 degrees and about 90 degrees. 1. A thin film tube reactor comprising a tube having a longitudinal axis , an inner cylindrical surface , a closed end and an open end , wherein the tube is rotatable about the longitudinal axis and wherein the angle of the longitudinal axis relative to the horizontal is variable between about 0 degrees and about 90 degrees.2. A thin film tube reactor according to claim 1 , wherein the angle of the longitudinal axis relative to the horizontal is variable between greater than 0 degrees and less than 90 degrees.3. A thin film tube reactor according to claim 1 , wherein the tube is substantially cylindrical or comprises at least a portion that is tapered.4. A thin film tube reactor according to claim 1 , wherein the tube comprises a lip adjacent to the open end.5. A thin film tube reactor according to claim 1 , wherein the speed of rotation of the tube about the longitudinal axis is variable.6. A thin film tube reactor according to claim 1 , wherein the thin film tube reactor comprises means for supplying at least one reactant to the tube.7. A thin film tube reactor according to claim 1 , wherein the inner surface of the tube comprises surface structures or aberrations.8. A thin film tube reactor according to claim 1 , wherein the thin film tube reactor comprises means for introducing a gas to the tube.9. A thin film tube reactor according to claim 1 , wherein the thin film tube reactor comprises means for removing a gas from the tube.10. A thin film tube reactor according to claim 1 , wherein the reactor comprises at least one jacket surrounding at least a portion of the tube claim 1 , adapted to provide heating and/or cooling to the tube.11. A thin ...

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Номер записи: 6
05-12-2013 дата публикации

METHOD OF FORMING A CATALYST WITH AN ATOMIC LAYER OF PLATINUM ATOMS

Номер: US20130324394A1
Автор: Humbert Michael Paul, KANEKO Keiichi, Shao Minhua
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A method of forming a catalyst material includes hindering the reaction rate of a displacement reaction and controlling the formation of platinum clusters, where an atomic layer of metal atoms is displaced with platinum atoms, to produce a catalyst material that includes an atomic layer of the platinum atoms. 1. A method of forming a catalyst material , the method comprising:hindering the reaction rate of a displacement reaction to control the formation of platinum clusters, wherein an atomic layer of metal atoms is displaced with platinum atoms, to produce a catalyst material that includes an atomic layer of the platinum atoms.2. The method as recited in claim 1 , wherein the metal atoms comprise copper.3. The method as recited in claim 1 , wherein the hindering includes using a surfactant.4. The method as recited in claim 1 , wherein the hindering includes using citric acid.5. The method as recited in claim 1 , wherein the hindering includes using ethylenediamine tetraacetic acid (EDTA).6. The method as recited in claim 1 , wherein the hindering includes forming a coordination complex between a surfactant and at least one of the metal atoms and the platinum atoms.7. The method as recited in claim 1 , wherein the atomic layer of metal atoms is on a noble metal core.8. A method of forming a catalyst material claim 1 , the method comprising:displacing an atomic layer of metal atoms with platinum atoms in the presence of a surfactant to produce a catalyst material that includes an atomic layer of the platinum atoms.9. The method as recited in claim 8 , wherein the surfactant is selected from a group consisting of citric acid claim 8 , EDTA and mixtures thereof.10. The method as recited in claim 8 , wherein the surfactant is in solution with an acid and a platinum salt.11. A method of forming a catalyst material claim 8 , the method comprising:providing a particle that includes a metal core that is covered with an atomic layer of metal atoms;providing a solution that ...

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Номер записи: 7
16-01-2014 дата публикации

CATALYST, PROCESS FOR PRODUCING THE CATALYST, USE OF THE CATALYST

Номер: US20140018234A1
Автор: DOERING Andreas
Принадлежит: MAN TRUCK & BUS AG

A catalyst especially for oxidation of exhaust gas constituents, for example nitrogen oxide, preferably nitrogen monoxide, consists of a particulate support material composed of titanium-containing nanoparticles, preferably titanium oxide nanoparticles, especially titanium dioxide nanoparticles coated with platinum, especially platinum particles. A process for producing such a catalyst. 1. A catalyst for oxidation of exhaust gas constituents including nitrogen oxide , the catalyst comprising:a particulate support material composed of titanium-containing nanoparticles; anda platinum coating, wherein the support material is coated with the platinum coating.2. The catalyst according to claim 1 , wherein the catalyst oxidizes nitrogen monoxide claim 1 , the particulate support material is composed of titanium dioxide nanoparticles claim 1 , and the platinum coating is composed of platinum particles.3. The catalyst according to claim 1 , further comprising bridges arranged between and joining at least one of a plurality of platinum particles of the platinum layer and to plurality of support material particles of the support material claim 1 , the bridges contain metal oxide and at least one of silicon and tungsten.4. The catalyst according to claim 1 , wherein the platinum coating is composed of platinum nanoparticles.5. The catalyst according to claim 1 , wherein the catalyst further includes palladium.6. The catalyst according to claim 1 , wherein the catalyst has a platinum concentration in the range of 0.5 mg to 150 mg per 1 gram of catalyst weight.7. The catalyst according to claim 1 , wherein the catalyst has a platinum concentration in the range of 1 mg to 100 mg per 1 gram of catalyst weight.8. The catalyst according to claim 3 , wherein the catalyst has one of:a titanium:silicon ratio of 20:1 to 2:1; anda titanium:tungsten ratio of 80:1 to 8:1.9. A process for producing a catalyst for oxidation of exhaust gas constituents including nitrogen oxide claim 3 , ...

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Номер записи: 8
23-01-2014 дата публикации

METHODS FOR THE SYNTHESIS OF DEUTERATED VINYL PYRIDINE MONOMERS

Номер: US20140024836A1
Автор: Bonnesen Peter V., Hong Kunlun, YANG Jun
Принадлежит: UT-BATTELLE, LLC

Methods for synthesizing deuterated vinylpyridine compounds of the Formula (1), wherein the method includes: (i) deuterating an acyl pyridine of the Formula (2) in the presence of a metal catalyst and DO, wherein the metal catalyst is active for hydrogen exchange in water, to produce a deuterated acyl compound of Formula (3); (ii) reducing the compound of Formula (3) with a deuterated reducing agent to convert the acyl group to an alcohol group, and (iii) dehydrating the compound produced in step (ii) with a dehydrating agent to afford the vinylpyridine compound of Formula (1). The resulting deuterated vinylpyridine compounds are also described. 2. The method of claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , and Rare deuterium atoms claim 1 , and R claim 1 , R claim 1 , and Rare hydrogen atoms.3. The method of claim 1 , wherein the metal of said metal catalyst in step (i) is selected from Pd claim 1 , Pt claim 1 , Ni claim 1 , Ru claim 1 , Rh claim 1 , Ir claim 1 , and combinations thereof.4. The method of claim 1 , wherein the metal of said metal catalyst in step (i) is selected from Pd claim 1 , Pt claim 1 , and mixtures thereof.5. The method of claim 1 , wherein said metal catalyst in step (i) is comprised of a catalytically active metal on a carbon support.6. The method of claim 1 , wherein step (i) is conducted at a temperature of at least 50° C. and below the critical temperature of water.7. The method of claim 1 , wherein step (i) is conducted at a temperature above 100° C. and below the critical temperature of water.8. The method of claim 1 , wherein step (i) is conducted at a temperature above 150° C. and below the critical temperature of water.9. The method of claim 1 , wherein step (i) is conducted at a pressure above 1 atm and below the critical pressure of water.10. The method of claim 1 , wherein said deuterated reducing agent is selected from aluminum deteurides and borodeuterides.11. The method of claim 1 , wherein said dehydrating ...

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Номер записи: 9
30-01-2014 дата публикации

EXHAUST GAS PURIFICATION OXIDATION CATALYST

Номер: US20140030158A1
Автор: Ikeda Hanae, Inde Ryoichi, Kamada Masaya, Sobue Yuichi, Takagi Nobuyuki
Принадлежит:

The oxidation catalyst for exhaust gas purification provided by the present invention includes a support supporting a noble metal that catalyzes the oxidation of carbon monoxide (CO). The support is mainly constituted by a composite metal oxide including, in terms of oxides, Al and Zr, or Al, Zr and Ti at the following mass ratios: AlO40 to 99% by mass, ZrO1 to 45% by mass, and TiO0 to 15% by mass. 2. (canceled)4. (canceled)5. The oxidation catalyst for exhaust gas purification according to claim 1 , wherein an average particle diameter of the noble metal particles determined by a CO pulse adsorption method is equal to or less than 5 nm.6. The oxidation catalyst for exhaust gas purification according to claim 1 , further comprising a hydrocarbon adsorbent in at least part of the catalyst coat layer.7. The oxidation catalyst for exhaust gas purification according to claim 6 , comprising zeolite particles as the hydrocarbon adsorbent.8. The oxidation catalyst for exhaust gas purification according to claim 1 , wherein an initial specific surface area of the support measured by a BET 1 point method is equal to or greater than 110 m/g.9. (canceled)10. The oxidation catalyst for exhaust gas purification according to claim 1 , that is used for purifying exhaust gas of a diesel engine.11. An exhaust gas purification device that purifies exhaust gas discharged from an engine claim 1 , comprising:an exhaust passage communicating with the engine; andan exhaust gas purification unit disposed in the exhaust gas passage, wherein{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the exhaust gas purification unit includes the oxidation catalyst for exhaust gas purification according to .'} The present invention relates to an oxidation catalyst for exhaust gas purification. More particularly, the present invention relates to an oxidation catalyst suitable for exhaust gas purification in a diesel engine and to a support constituting the catalyst. The present application claims ...

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Номер записи: 10
13-02-2014 дата публикации

Preparation of Diesel Oxidation Catalyst Via Deposition of Colloidal Nanoparticles

Номер: US20140044627A1
Автор: Müller-Stach Torsten W., Neubauer Torsten, Siani Attilio, Wei Xinyi
Принадлежит: BASF CORPORATION

The present invention relates to a process for preparing a catalyst, at least comprising the steps of adding a protecting agent to an aqueous solution of a metal precursor to give a mixture (M1), adding a reducing agent to mixture (M1) to give a mixture (M2), adding a support material to mixture (M2) to give a mixture (M3), adjusting the pH of mixture (M3), and separating the solid and liquid phase of mixture (M3). Furthermore, the present invention relates to the catalyst as such and its use as diesel oxidation catalyst. 1. A catalyst for purification of an exhaust gas of a combustion engine , the catalyst comprising:a precious metal component; anda support material for the precious metal component;wherein the precious metal component comprises colloidally-delivered nanoparticles on the support material that are highly dispersed upon aging.2. The catalyst of claim 1 , wherein the precious metal component comprises: platinum claim 1 , palladium claim 1 , rhodium claim 1 , gold claim 1 , silver claim 1 , or mixtures thereof claim 1 , and the support material comprises particles of aluminum oxide claim 1 , silicon oxide claim 1 , cerium oxide claim 1 , zirconium oxide claim 1 , titanium oxide claim 1 , magnesium oxide alone or as mixtures and/or solid solutions thereof.3. The catalyst of claim 1 , wherein the precious metal component comprises colloidally- and protective agent-delivered nanoparticles.4. The catalyst of claim 3 , wherein the colloidally- and protective agent-delivered nanoparticles are deposited onto the support material in an aqueous mixture by reduction and pH adjustment of a mixture of a protecting agent and a precursor of the metal component.5. The catalyst of comprising platinum and palladium as the precious metal component claim 1 , wherein after treatment of the catalyst at 800° C. for 12 h in an oxidizing atmosphere (10% HO in air) claim 1 , no less than 36% of particles of the precious metal component have an average diameter below 22 nm.6. ...

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Номер записи: 11
20-02-2014 дата публикации

METHOD OF FORMING SUPPORTED DOPED PALLADIUM CONTAINING OXIDATION CATALYSTS

Номер: US20140051567A1
Автор: MOHAJERI NAHID
Принадлежит: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.

A method of forming a supported oxidation catalyst includes providing a support comprising a metal oxide or a metal salt, and depositing first palladium compound particles and second precious metal group (PMG) metal particles on the support while in a liquid phase including at least one solvent to form mixed metal comprising particles on the support. The PMG metal is not palladium. The mixed metal particles on the support are separated from the liquid phase to provide the supported oxidation catalyst. 1. A method of forming a supported oxidation catalyst , comprising:providing a support comprising a metal oxide or a metal salt, anddepositing first palladium compound particles and second precious metal group (PMG) metal particles on said support while in a liquid phase including at least one solvent to form mixed metal comprising particles on said support, wherein said second PMG metal particles is not palladium, andseparating said mixed metal comprising particles on said support from said liquid phase to provide said supported oxidation catalyst.2. The method of claim 1 , wherein said first palladium compound particles comprise palladium oxide claim 1 , palladium hydroxide claim 1 , or a palladium salt.3. The method of claim 1 , wherein said second PMG metal particles are nanosized and a relative concentration ratio of said second PMG metal particles to said first palladium compound particles ranges from 1:10 to 1:25 by weight.4. The method of claim 1 , wherein said second PMG metal particles comprise gold claim 1 , silver or platinum.5. The method of claim 1 , wherein said separating comprises drying and said depositing comprises co-depositing said first palladium compound particles and said second PMG metal particles using a precursor for said first palladium compound particles and a precursor for said second PMG metal particles.6. The method of claim 5 , wherein said co-depositing comprises depositing said first palladium compound particles after depositing said ...

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Номер записи: 12
20-02-2014 дата публикации

CATALYSTS FOR THE PREPARATION OF METHYLPYRIDINE

Номер: US20140051569A1
Автор: Pianzola Daniel, Siegrist Walter
Принадлежит: Lonza Ltd.

Subject of the invention is a dehydrogenation catalyst for dehydrogenating methylpiperidine to methylpyridine. Subject of the invention are also methods for preparing the catalysts obtained thereby and methods, in which the catalysts are used. 1. A process for the production of a catalyst for the dehydrogenation of methylpiperidine to methylpyridine comprising in the order (a) to (d) the steps of(a) providing a carrier comprising 65-100 weight % silicon oxide and 0-35 weight % aluminium oxide,(b) impregnating the carrier with palladium, whereby the carrier is brought into contact with an aqueous solution of a palladium-ammonia-complex to obtain a catalyst,(c) drying the catalyst with air at a temperature below 80° C. and(d) calcinating the catalyst at a temperature below 200° C.2. The process of claim 1 , further comprising after step (d)(e) activating the catalyst with hydrogen.3. The process of claim 1 , wherein the drying step (c) is carried out at a temperature between 20° C. and 60° C.4. The process of claim 1 , wherein the calcinating step (d) is carried out with air and/or at a temperature between 80° C. and 200° C.5. The process of claim 1 , wherein the activating step (e) is carried out under active depletion of oxygen.6. The process of claim 1 , wherein the catalyst comprises 0.5 to 8 weight % palladium.7. A dehydrogenation catalyst for the conversion of methylpiperidine to methylpyridine claim 1 , obtainable by a process of .8. A process for the production of methylpyridine from methylpiperidine claim 7 , wherein methylpiperidine is contacted with a dehydrogenation catalyst according to .9. The process of claim 8 , wherein the methylpiperidine is 3-methylpiperidine.10. The process of claim 8 , wherein the reaction is carried out under a hydrogen and/or nitrogen atmosphere.11. The process of claim 8 , wherein the reaction is carried out in the gaseous phase at a temperature between 180° C. and 400° C.12. The process of claim 8 , wherein the catalyst is ...

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Номер записи: 13
06-03-2014 дата публикации

Particles Containing One Or More Multi-Layered Dots On Their Surface, Their Use, and Preparation of Such Particles

Номер: US20140066299A1
Автор: Deuerlein Stephan, Gerlinger Wolfgang
Принадлежит: BASF SE

Described is a product comprising an amount of particles having one or more multi-layered dots on their surface, each multi-layered dot consisting of two or more layers and having an innermost layer contacting the surface of the particle, and an outermost layer, wherein the innermost layer of the multi-layered dots consists of a first metal and the outermost layer of the multi-layered dots consists of a second metal, different from the first metal. 1. A product comprising an amount of particles having one or more multi-layered dots on their surface , each multi-layered dot consisting of two or more layers and having an innermost layer contacting the surface of the particle , and an outermost layer ,wherein the innermost layer of the multi-layered dots consists of a first metal and the outermost layer of the multi-layered dots consists of a second metal, different from the first metal.2. The product according to claim 1 , wherein the particles having one or more multi-layered dots on their surface without consideration of the multi-layered dots have a mean Feret diameter in the range of from 12 to 300 nm.3. The product according to claim 1 , wherein the multi-layered dots have a mean Feret diameter below 10 nm.4. The product according to claim 1 , wherein claim 1 , in processes for depositing metal on the surface of said particles by MOCVD claim 1 , the first metal has a lower tendency to form larger dots than the second metal.5. The product according to claim 1 , wherein the second metal has a higher catalytic activity than the first metal claim 1 , for the reaction of ethane with oxygen to carbondioxide and water.6. The product according to claim 1 , wherein the first metal is palladium.7. The product according to claim 1 , wherein the second metal is platinum.8. The product according to claim 1 , wherein at least 90% of the multi-layered dots having a minimum diameter of 0.1 nm have a diameter in the range of from 0.5 to 4 nm.9. The product according to claim 1 , ...

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Номер записи: 14
27-03-2014 дата публикации

CATALYTIC HYDROGENATION OF FLUOROOLEFINS, ALPHA-ALUMINA SUPPORTED PALLADIUM COMPOSITIONS AND THEIR USE AS HYDROGENATION CATALYSTS

Номер: US20140088328A1
Автор: Cheung Patricia, Lamarca Concetta, SIEVERT ALLEN CAPRON
Принадлежит: E I DU PONT DE NEMOURS AND COMPANY

A hydrogenation process is disclosed. The process involves reacting a fluoroolefin with Hin a reaction zone in the presence of a palladium catalyst to produce a hydrofluoroalkane product, wherein the palladium catalyst comprises palladium supported on a carrier wherein the palladium concentration is from about 0.001 wt % to about 0.2 wt % based on the total weight of the palladium and the carrier. Also disclosed is a palladium catalyst composition consisting essentially of palladium supported on α-AlOwherein the palladium concentration is from about 0.001 wt % to about 0.2 wt % based on the total weight of the palladium and the α-AlO. Also disclosed is a hydrogenation process comprising reacting a fluoroolefin with Hin a reaction zone in the presence of a palladium catalyst to produce a hydrofluoroalkane product, characterized by: the palladium catalyst consisting essentially of palladium supported on α-AlOwherein the palladium concentration is from about 0.001 wt % to about 0.2 wt % based on the total weight of the palladium and the α-AlO. Also disclosed is a hydrogenation process comprising (a) passing a mixture comprising fluoroolefin and Hthrough a bed of palladium catalyst in a reaction zone wherein the palladium catalyst comprises palladium supported on a carrier; and (b) producing a hydrofluoroalkane product; characterized by: the palladium catalyst in the front of the bed having lower palladium concentration than the palladium catalyst in the back of the bed. 1. A hydrogenation process comprising reacting a fluoroolefin with Hin a reaction zone in the presence of a palladium catalyst to produce a hydrofluoroalkane product , wherein said palladium catalyst comprises palladium supported on a carrier wherein the palladium concentration is from about 0.001 wt % to about 0.2 wt % based on the total weight of the palladium and the carrier.2. The hydrogenation process of wherein the palladium concentration of the palladium catalyst is from about 0.001 wt % to about ...

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Номер записи: 15
03-04-2014 дата публикации

METAL CATALYST COMPOSITION

Номер: US20140094635A1
Автор: Fu Baosong, Kung Harold H., Kung Mayfair C, Lu Junling, Stair Peter
Принадлежит:

Embodiments include metal catalyst compositions and methods of forming metal catalyst compositions. A metal catalyst composition can be formed by (a) contacting a supported metal catalyst surface with a ligand-containing alumina precursor for a predetermined contact time to form an intermediate layer having a plurality of aluminum moieties that chemically bond to the supported metal catalyst surface, optionally, contacting the intermediate layer of aluminum moieties with an inert gas for a predetermined intermediate stripping time to remove unreacted ligand-containing alumina precursors, (b) reacting the aluminum moieties with an oxidation reagent for a predetermined reaction time to convert at least a portion of the ligands to hydroxyl groups thereby forming a layer of the alumina over-coat on the supported metal catalyst surface or a previously formed layer of the alumina over-coat, (c) contacting the layer of the alumina over-coat formed in step (b) with an inert gas for a predetermined stripping time to remove unreacted oxidation reagents, replicating the sequential steps (a-c) to form an additional layer of the alumina over-coat, and (d) activating the alumina over-coat, after forming a final layer of the alumina over-coat, to form a plurality of pores therein. 1. A method of forming a metal catalyst composition , comprising: (a) contacting a supported metal catalyst surface with a ligand-containing metal oxide precursor for a predetermined contact time to form an intermediate layer having a plurality of metal moieties that chemically bond to the supported metal catalyst surface;', '(b) reacting the metal moieties with water for a predetermined reaction time to convert at least a portion of the ligands to hydroxyl groups thereby forming a layer of the metal oxide, metal hydroxide, or metal oxyhydroxide over-coat on the supported metal catalyst surface or a previously formed layer of the metal oxide, metal hydroxide, or metal oxyhydroxide over-coat;', '(c) prior ...

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Номер записи: 16
07-01-2021 дата публикации

EXHAUST GAS PURIFICATION DEVICE

Номер: US20210001315A1
Автор: AKITA Shingo, ENDO Yoshinori, KURIHARA Hiroki, NABEMOTO Takeshi, NAGAI Yusuke, SAKURADA Yu
Принадлежит:

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

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Номер записи: 17
04-01-2018 дата публикации

ZONED DIESEL OXIDATION CATALYST

Номер: US20180001306A1
Автор: COLE KIERAN JOHN, HANLEY ROBERT, HASHIMOTO YOSHIHITO, KLINK Wassim, LOPEZ-DE JESUS YARITZA M., MARKATOU PENELOPE, NEWMAN COLIN RUSSELL, SHIBATA MASAHITO
Принадлежит:

An oxidation catalyst is described for treating an exhaust gas from a diesel engine, which oxidation catalyst comprises: a substrate; a first washcoat region disposed on the substrate, wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material; a second washcoat region adjacent to the first washcoat region, wherein the second washcoat region comprises a second platinum group metal (PGM) and a second support material; a third washcoat region disposed on the substrate, wherein the third washcoat region comprises a third platinum group metal (PGM) and a third support material; and wherein either: (i) the third washcoat region is adjacent to the second washcoat region; or (ii) the second washcoat region is disposed or supported on the third washcoat region. Also described are uses and methods involving the oxidation catalyst. 120-. (canceled)21. An oxidation catalyst for treating an exhaust gas from a diesel engine , which oxidation catalyst comprises:a substrate;a first washcoat region disposed on the substrate, wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material;a second washcoat region adjacent to the first washcoat region, wherein the second washcoat region comprises a second platinum group metal (PGM) and a second support material;a third washcoat region disposed on the substrate, wherein the third washcoat region comprises a third platinum group metal (PGM) and a third support material; andwherein the second washcoat region is disposed on the third washcoat region.22. The oxidation catalyst according to claim 21 , wherein the first washcoat region comprises a first washcoat layer or a first washcoat zone claim 21 , the second washcoat region comprises a second washcoat layer claim 21 , and the third washcoat region comprises a third washcoat layer.23. The oxidation catalyst according to claim 21 , wherein the first washcoat region consists of a first washcoat ...

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Номер записи: 18
02-01-2020 дата публикации

INTEGRATION OF AN ORGANIC CHLORIDE DECOMPOSITION REACTOR ON THE ISOMERIZATION/DEISOBUTANIZER C5 DRAG STREAM

Номер: US20200002248A1
Автор: Krupa Steven L., Shecterle David J.
Принадлежит:

A process for producing an isomerized product comprises sending a feed stream comprising butanes, hydrogen and an organic chloride to a butane isomerization reactor containing an isomerization catalyst to convert a portion of normal butanes in said feed stream to iso-butanes in an isomerized stream. The isomerized stream to a stabilizer column to produce a butane stream containing normal, iso-butanes and C5 hydrocarbons; the butane stream is sent to a column to produce an isomerized upper stream and a bottoms stream comprising a mixture of butanes, C5 hydrocarbons and organic chloride. The bottoms stream is sent to an organic chloride decomposition reactor to produce a mixture of HCl, hydrogen and hydrocarbons. 1. A process for producing i-butane comprising:sending a feed stream comprising butanes, hydrogen and an organic chloride to a butane isomerization reactor containing an isomerization catalyst to convert a portion of normal butanes in said feed stream to iso-butanes in an isomerized stream;sending said isomerized stream to a stabilizer column to produce a butane stream containing normal, iso-butanes and C5 hydrocarbons; andsending said butane stream to a deisobutanizer column to produce an isomerized upper stream, an NC4 rich side draw stream, and a bottoms stream comprising a mixture of butanes, C5 hydrocarbons and said organic chloride; andsending said bottoms stream to an organic chloride decomposition reactor to produce an organic chloride decomposition stream comprising hydrogen and HCl.2. The process of wherein said organic chloride is perchloroethylene.3. The process of further comprising sending said organic chloride decomposition stream through a chloride guard bed to remove HCl.4. The process of further comprising sending said organic chloride decomposition stream through a flash drum to recycle hydrogen and HCl.5. The process of wherein said mixture of butanes claim 1 , C5 hydrocarbons and organic chloride comprises 20-100 wppm perchloroethylene.6. ...

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Номер записи: 19
09-01-2020 дата публикации

NANOHOOP COMPOUND EMBODIMENTS COMPRISING META-SUBSTITUTION AND MOLECULAR SYSTEMS COMPRISING THE SAME

Номер: US20200010419A1
Автор: Jasti Ramesh, Van Raden Jeff
Принадлежит:

Disclosed herein are embodiments of nanohoop compounds, methods of making, and methods of using the same. The nanohoop compounds disclosed herein have discrete ring system(s) that comprise a unique meta-substituted motif that affords a strained cavity in which myriad reaction chemistries can take place. The unique structures and properties of the nanohoop compounds disclosed herein also lend to their use in a variety of biological applications, and as interlocked structures in molecular machines. 3. The nanohoop compound of claim 1 , wherein ring B is a heteroaryl ring and r and t are 0.4. The nanohoop compound of claim 1 , wherein ring B and ring C bind together to provide a hetero-biaryl ring group and r is 0.5. The nanohoop compound of claim 1 , wherein ring B claim 1 , ring C claim 1 , and ring D bind together to provide a three-ring heteroaryl ring system and r is 0.6. The nanohoop compound of claim 1 , wherein ring B claim 1 , ring C claim 1 , ring D claim 1 , and ring E bind together to provide a four-ring fused heteroaryl ring system claim 1 , and r is 0.7. The nanohoop compound of claim 1 , wherein ring B claim 1 , ring C claim 1 , and ring F bind together to provide a heterotriaryl ring system.9. The nanohoop compound of claim 8 , wherein for Formulas IIIA claim 8 , IIIB claim 8 , IIIC claim 8 , IIIE claim 8 , and IIIF claim 8 , each X is N and for Formula IIID claim 8 , at least one X is C(R) where Ris selected from an electron-accepting group or an electron-donating group and each other X independently is C or C(R) where Ris selected from an electron-accepting group or an electron-donating group.12. The nanohoop compound of claim 1 , further comprising an interlocked molecule that is confined by a cavity defined by the nanohoop compound.13. The nanohoop compound of claim 12 , wherein the interlocked molecule is a triazole-containing compound or an alkyne-containing compound.15. A method claim 1 , comprising combining a metal catalyst with (i) the ...

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Номер записи: 20
02-02-2017 дата публикации

METHOD FOR PRODUCING FINE CATALYST PARTICLES AND METHOD FOR PRODUCING CARBON-SUPPORTED CATALYST

Номер: US20170028385A1
Автор: Adachi Makoto, KANEKO Keiichi, Takehiro Naoki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

The present invention is to provide fine catalyst particles to which sulfate ions are less likely to be adsorbed, and a carbon-supported catalyst to which sulfate ions are less likely to be adsorbed. Disclosed is a method for producing fine catalyst particles comprising a fine palladium-containing particle and a platinum-containing outermost layer covering at least part of the fine palladium-containing particle, wherein the method comprises: a copper covering step of covering at least part of the fine palladium-containing particle with copper by preparing a second dispersion by mixing a first dispersion comprising fine palladium-containing particles being dispersed in an acid solution with a copper-containing solution, and applying a potential that is nobler than the oxidation reduction potential of copper to the fine palladium-containing particles in the second dispersion, and a platinum covering step of covering at least part of the fine palladium-containing particle with platinum by substituting the copper covering at least part of the fine palladium-containing particle with platinum by mixing the second dispersion and a platinum-containing solution after the copper covering step, with applying a constant potential that is in a range between a potential that is nobler than the oxidation reduction potential of copper and a potential that is less than the oxidation reduction potential of platinum, to the fine palladium-containing particles. 1. A method for producing fine catalyst particles comprising a fine palladium-containing particle and a platinum-containing outermost layer covering at least part of the fine palladium-containing particle ,wherein the method comprises:a copper covering step of covering at least part of the fine palladium-containing particle with copper by preparing a second dispersion by mixing a first dispersion comprising fine palladium-containing particles being dispersed in an acid solution with a copper-containing solution, and applying a ...

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Номер записи: 21
05-02-2015 дата публикации

ZONED DIESEL OXIDATION CATALYST

Номер: US20150033715A1
Автор: COLE KIERAN JOHN, HANLEY ROBERT, HASHIMOTO YOSHIHITO, KLINK Wassim, LOPEZ-DE JESUS YARITZA M., MARKATOU PENELOPE, NEWMAN COLIN RUSSELL, SHIBATA MASAHITO
Принадлежит:

An oxidation catalyst is described for treating an exhaust gas from a diesel engine, which oxidation catalyst comprises: a substrate; a first washcoat region disposed on the substrate, wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material; a second washcoat region adjacent to the first washcoat region, wherein the second washcoat region comprises a second platinum group metal (PGM) and a second support material; a third washcoat region disposed on the substrate, wherein the third washcoat region comprises a third platinum group metal (PGM) and a third support material; and wherein either: (i) the third washcoat region is adjacent to the second washcoat region; or (ii) the second washcoat region is disposed or supported on the third washcoat region. Also described are uses and methods involving the oxidation catalyst. 1. An oxidation catalyst for treating an exhaust gas from a diesel engine , which oxidation catalyst comprises:a substrate;a first washcoat region disposed on the substrate, wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material, wherein the first PGM is selected from the group consisting of platinum and a combination of platinum and palladium;a second washcoat region adjacent to the first washcoat region, wherein the second washcoat region comprises a second platinum group metal (PGM) and a second support material, wherein the second PGM is selected from the group consisting of platinum and a combination of platinum and palladium;a third washcoat region disposed on the substrate, wherein the third washcoat region comprises a third platinum group metal (PGM) and a third support material wherein the third PGM is selected from the group consisting of platinum and a combination of platinum and palladium; andwherein the third washcoat region is adjacent to the second washcoat region, and the total loading of the second PGM is greater than the total ...

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Номер записи: 22
12-02-2015 дата публикации

CARBON-BASED PALLADIUM CATALYST OBTAINED BY USING IONIC LIQUID, METHOD FOR PREPARING THE SAME AND HYDROGENATION OF HYDROFLUOROCARBON USING THE SAME

Номер: US20150045589A1
Автор: AHN Byoung Sung, HA Jeong Myeong, Kim Chang Soo, KIM Hong Gon, Lee Hyun Joo, YOO Kyesang
Принадлежит: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Provided is a palladium on carbon (Pd/C) catalyst obtained by using an ionic liquid, a method for preparing the same, and a method for hydrogenation of hydrofluorocarbon using the same. More particularly, palladium particles are supported on carbon particles by using an ionic liquid, and the resultant Pd/C catalyst is used for hydrogenation of hydrofluorocarbon. The catalyst includes palladium particles having a smaller particle size and a more uniform shape as compared to the existing Pd/C catalysts, and thus shows high catalytic activity. 1. A carbon-based palladium (Pd/C) catalyst for hydrogenation of hydrofluorocarbon , comprising palladium with a uniform shape and size obtained by using an imidazole-based ionic liquid.2. A carbon-based palladium (Pd/C) catalyst for hydrogenation of hydrofluorocarbon according to claim 1 , wherein the imidazole-based ionic liquid is at least one selected from the group consisting of 1-ethyl-3-methylimidazolium tetrafluoroborate claim 1 , 1-butyl-3-methylimidazolium tetrafluoroborate claim 1 , 1-hexyl-3-methylimidazolium tetrafluoroborate claim 1 , 1-octyl-3-methylimidazolium tetrafluoroborate claim 1 , 1-butyl-3-methylimidazolium hexafluorophosphate claim 1 , 1-hexyl-3-methylimidazolium hexafluorophosphate claim 1 , 1-octyl-1-3-methylimidazolium hexafluorophosphate claim 1 , 1-butyl-3-methylimidazolium trifluoromethanesulfonate and 1-hexyl-3-methylimidazolium trifluoromethanesulfonate.3. A carbon-based palladium (Pd/C) catalyst for hydrogenation of hydrofluorocarbon according to claim 1 , wherein palladium nanoparticles have an average particle diameter of 1-100 nm.4. A carbon-based palladium (Pd/C) catalyst for hydrogenation of hydrofluorocarbon according to claim 1 , wherein the content of palladium is 0.9-5 wt % of carbon.5. A carbon-based palladium (Pd/C) catalyst for hydrogenation of hydrofluorocarbon according to claim 1 , wherein the hydrogenation is carried out at a temperature of 80-200° C. under a pressure of 0.1-2 atm ...

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Номер записи: 23
15-02-2018 дата публикации

METHANE OXIDATION CATALYST, PROCESS TO PREPARE THE SAME AND METHOD OF USING THE SAME

Номер: US20180043334A1
Автор: SOORHOLTZ Mario, TANEV Peter Tanev
Принадлежит:

The present invention provides a methane oxidation catalyst comprising one or more noble metals supported on zirconia, wherein the zirconia comprises tetragonal zirconia and monoclinic zirconia, and wherein the weight ratio of tetragonal zirconia to monoclinic zirconia is in the range of from 1:1 to 31:1. The invention further provides a process for preparing a methane oxidation catalyst, a methane oxidation catalyst thus prepared and a method of oxidizing methane. 1. A methane oxidation catalyst comprising one or more noble metals supported on non-modified zirconia , wherein the zirconia comprises tetragonal zirconia and monoclinic zirconia , and wherein the weight ratio of tetragonal zirconia to monoclinic zirconia is in the range of from 1:1 to 31:1.2. A methane oxidation catalyst according to claim 1 , wherein the zirconia comprising tetragonal zirconia and monoclinic zirconia was prepared by one or more thermal treatment steps of a single zirconia precursor.3. A methane oxidation catalyst according to wherein the thermal treatment step comprises calcination at a temperature in the range of from 675 to 1050° C.4. A methane oxidation catalyst according to wherein the thermal treatment step comprises calcination at a temperature in the range of from 800 to 1025° C.5. A methane oxidation catalyst according to claim 2 , wherein the single zirconia precursor comprises tetragonal zirconia.6. A methane oxidation catalyst according to claim 1 , wherein the monoclinic zirconia is present as a dispersion of monoclinic zirconia in the tetragonal zirconia.7. A methane oxidation catalyst according to claim 1 , wherein the non-modified zirconia is not sulfated and not tungsten-modified.8. A methane oxidation catalyst according to claim 1 , wherein the methane oxidation catalyst is deposited on a ceramic or metallic monolith substrate comprising pore channels claim 1 , defining an inner pore channel surface claim 1 , and wherein the methane oxidation catalyst is deposited in ...

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Номер записи: 24
03-03-2022 дата публикации

EXHAUST GAS PURIFICATION DEVICE

Номер: US20220062884A1
Автор: Chinzei Isao, FUJITA Naoto, HOSHINO Sho, Ito Minoru, SHIRAKAWA Shogo, TOJO Takumi
Принадлежит:

An exhaust gas purification device includes a substrate including an upstream end and a downstream end and having a length Ls; a first containing Pd particles, extending between the upstream end and a first position, and being in contact with the substrate; a second containing Rh particles, extending between the downstream end and a second position, and being in contact with the substrate; and a third catalyst layer containing Rh particles, extending between the upstream end and a third position, and being in contact with at least the first catalyst layer, wherein an average of a Rh particle size distribution is from 1.0 to 2.0 nm, and a standard deviation of the Rh particle size distribution is 0.8 nm or less in each of the second catalyst layer and the third catalyst layer.

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Номер записи: 25
14-02-2019 дата публикации

OXIDATION CATALYST FOR LEAN COMPRESSED NATURAL GAS ENGINE

Номер: US20190046958A1
Автор: An Limiao, Gerlach Olga, ROTH Stanley, Schulman Emily, Sunderman Andreas, Wei Xinyi
Принадлежит:

The present invention provides an oxidation catalyst composition suitable for at least partial conversion of gaseous hydrocarbon emissions, e.g., methane. The oxidation catalyst composition includes at least one platinum group metal (PGM) component supported onto a porous zirconia-containing material that provides an effect on hydrocarbon conversion activity. The porous zirconia-containing material is at least 90% by weight in the monoclinic phase. Furthermore, the PGM component can comprise at least one platinum group metal in the form of colloidally deposited nanoparticles. The oxidation catalyst composition can be used in the treatment of emissions from lean compressed natural gas engines. 1. A catalyst composition configured for hydrocarbon conversion in a hydrocarbon-containing stream , the catalyst composition comprising a platinum group metal (PGM) component supported on a zirconia-containing material , the zirconia being at least 90% by weight in a monoclinic phase.2. The catalyst composition of claim 1 , wherein the platinum group metal (PGM) component is selected from the group consisting of palladium claim 1 , platinum claim 1 , and combinations thereof.3. The catalyst composition of claim 1 , wherein the composition comprises about 0.01% to about 6.0% by weight of platinum group metal (PGM) component calculated as metal and based on the total weight of the combined PGM and zirconia-containing material.4. The catalyst composition of claim 2 , wherein the platinum group metal (PGM) component comprises platinum and palladium present in a weight ratio of about 1:1 to about 0.1:1.5. The catalyst composition of claim 4 , wherein one or both of the palladium and platinum is in the form of colloidally deposited nanoparticles.6. The catalyst composition of claim 1 , wherein the zirconia-containing material comprises of no more than 10% tetragonal phase.7. The catalyst composition of claim 1 , wherein the zirconia-containing material has a pore volume of about 0. ...

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Номер записи: 26
13-02-2020 дата публикации

SINTER-RESISTANT CATALYST SYSTEMS

Номер: US20200047159A1
Автор: Li Wei, Qi Gongshin, Xiao Xingcheng, Yang Ming
Принадлежит:

Sinter-resistant catalyst systems include a catalytic substrate comprising a plurality of metal catalytic nanoparticles bound to a metal oxide catalyst support, and a coating of oxide nanoparticles disposed on the metal catalytic nanoparticles and optionally on the metal oxide support. The oxide nanoparticles comprise one or more lanthanum oxides and optionally one or more barium oxides, and additionally one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, iron, strontium, and calcium. The metal catalytic nanoparticles can include ruthenium, rhodium, palladium, osmium, iridium, and platinum, rhenium, copper, silver, and/or gold. The metal oxide catalyst support can include one or more metal oxides selected from the group consisting of Al2O3, CeO2, ZrO2, TiO2, SiO2, La2O3, MgO, and ZnO. The coating of oxide nanoparticles is about 0.1% to about 50% lanthanum and barium oxides. The oxide nanoparticles can further include one or more oxides of magnesium and/or cobalt. 2. The catalyst system of claim 1 , wherein the metal catalytic nanoparticles comprise one or more of ruthenium claim 1 , rhodium claim 1 , palladium claim 1 , osmium claim 1 , iridium claim 1 , and platinum claim 1 , rhenium claim 1 , copper claim 1 , silver claim 1 , and gold.3. The catalyst system of claim 1 , wherein the metal oxide catalyst support comprises one or more of Al2O3 claim 1 , CeO2 claim 1 , La2O3 claim 1 , ZrO2 claim 1 , TiO2 claim 1 , SiO2 claim 1 , MgO claim 1 , and ZnO.4. The catalyst system of claim 1 , wherein the metal oxide catalyst support comprises one or more of Al2O3 claim 1 , La2O3 claim 1 , ZrO2 claim 1 , and CeO2.5. The catalyst system of claim 1 , wherein the coating of oxide nanoparticles is about 0.1% to about 50% lanthanum oxides.6. The catalyst system of claim 1 , wherein the oxide nanoparticles further comprise one or more oxides of magnesium and/or cobalt.7. The catalyst system of claim 6 , wherein the coating of oxide nanoparticles ...

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Номер записи: 27
13-02-2020 дата публикации

EXHAUST GAS PURIFICATION CATALYST AND EXHAUST GAS PURIFICATION METHOD USING THE SAME

Номер: US20200049042A1
Автор: Ikeda Masanori, IKEGAMI Takahiro, KUNO Hirotaka, Mikita Kosuke, MINAMI Shigekazu, NAKASHIMA Masashi
Принадлежит: UMICORE SHOKUBAI JAPAN CO., LTD.

In order to provide an exhaust gas purification catalyst capable of purifying hydrocarbons, carbon monoxide, and nitrogen oxides in exhaust gas at low temperatures, the exhaust gas purification catalyst according to the present invention includes: a region () containing palladium and yttrium on a three-dimensional structure (), and a first region () and a second region () provided on the region () in order from an inflow side of exhaust gas to an outflow side of exhaust gas. The concentration of yttrium contained in the first region () and/or the second region () is higher than the concentration of yttrium contained in the region (). 1. An exhaust gas purification catalyst comprising:a region containing palladium and yttrium, the region being provided on a three-dimensional structure; anda first region and a second region being provided on the region containing palladium and yttrium in order from an inflow side of exhaust gas to an outflow side of exhaust gas, whereinthe concentration of yttrium contained in either the first region and/or the second region is higher than the concentration of yttrium contained in the region containing palladium and yttrium.2. The exhaust gas purification catalyst according to claim 1 , wherein the concentration of yttrium contained in the second region is from 2 mass % to 15 mass % in terms of YO claim 1 , and{'sub': 2', '3, 'the concentration of yttrium contained in the region containing palladium and yttrium is from 0.01 mass % to 0.9 mass % in terms of YO.'}3. The exhaust gas purification catalyst according to or claim 1 , wherein the amount of yttrium contained in the second region is larger than the amount of yttrium contained in the first region.4. The exhaust gas purification catalyst according to any one of to claim 1 , wherein the amount of yttrium contained in the second region is from 2.1 g/L to 10 g/L in terms of YOrelative to 1 liter of the three-dimensional structure claim 1 , and{'sub': 2', '3, 'the amount of yttrium ...

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Номер записи: 28
15-05-2014 дата публикации

OXIDATION CATALYST FOR INTERNAL COMBUSTION ENGINE EXHAUST GAS TREATMENT

Номер: US20140130760A1
Автор: BLAKEMAN PHILIP GERALD, BROWN MICHAEL GAVIN, CHATTERJEE SOUGATO, CHIFFEY ANDREW FRANCIS, GAST JANE, OYAMADA HANAKO, PHILLIPS PAUL RICHARD, RAJARAM RAJ RAO, SUMIYA SATOSHI, WALKER ANDREW PETER, Wang Lifeng
Принадлежит:

The invention provides an exhaust gas cleaning oxidation catalyst and in particular to an oxidation catalyst for cleaning the exhaust gas discharged from internal combustion engines of compression ignition type (particularly diesel engines). The invention further relates to a catalysed substrate monolith comprising an oxidising catalyst on a substrate monolith for use in treating exhaust gas emitted from a lean-burn internal combustion engine. In particular, the invention relates to a catalysed substrate monolith comprising a first washcoat coating and a second washcoat coating, wherein the second washcoat coating is disposed in a layer above the first washcoat coating. 120-. (canceled)21. A catalysed substrate monolith for treating exhaust gas emitted from a lean-burn internal combustion engine comprising an oxidising catalyst on a substrate monolith , wherein the catalysed substrate monolith comprises a first washcoat coating having a length L and a second washcoat coating , wherein the second washcoat coating is disposed in a layer above the first washcoat coating for at least some of length L , wherein the first washcoat coating comprises a catalyst composition comprising platinum (Pt) and at least one support material for the platinum , wherein the second washcoat coating comprises a catalyst composition comprising both platinum (Pt) and palladium (Pd) and at least one support material for the platinum and the palladium and wherein a weight ratio of platinum (Pt) to palladium (Pd) in the second washcoat coating is ≦2.221. The catalysed substrate monolith according to claim , wherein the substrate monolith is a flow-through substrate monolith.231. The catalysed substrate monolith according to claim , wherein the weight ratio of platinum (Pt) to palladium (Pd) in the second washcoat coating is ≦1:1.241. The catalysed substrate monolith according to claim , wherein the second washcoat coating comprises both platinum (Pt) and palladium (Pd) and wherein the first ...

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Номер записи: 29
01-03-2018 дата публикации

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

Номер: US20180056277A1
Автор: CHO Young-hoon, HAN Sang Soo, Jo Deok-Yeon, Kim Ho Joong, Lee Kwan-Young, Seo Myung-gi
Принадлежит:

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 ...

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Номер записи: 30
27-02-2020 дата публикации

HIGH-CAPACITY, LOW-TEMPERATURE, PASSIVE NOx AND CD ADSORBERS AND METHODS FOR MAKING SAME

Номер: US20200061595A1
Автор: Gao Feng, Jaegers Nicholas R., Khivantsev Konstantin, Kovarik Libor, Szanyi Janos, Wang Yong
Принадлежит:

Disclosed are passive NOadsorbers and methods for synthesizing the same. Small-pore zeolitic materials with practical loadings of transition metals atomically dispersed in the micropores are described herein. Also demonstrated are simple and scalable synthesis routes to high loadings of atomically dispersed transition metals in the micropores of a small-pore zeolite. 1. A passive adsorber for pre-selected gasses , the passive adsorber comprising: a zeolite having a loading greater than 0.3 wt % of a dispersed transition metal.2. The passive adsorber of wherein the preselected gas is selected from a group consisting of NOx and CO.3. The passive adsorber of claim 1 , wherein the zeolite comprises SSZ-13.4. The passive adsorber of claim 1 , wherein the loading is greater than or equal to 0.5 wt %.5. The passive adsorber of claim 1 , wherein the loading is greater than or equal to 1 wt %.6. The passive adsorber of claim 1 , wherein the transition metal comprises Pt.7. The passive adsorber of claim 1 , wherein the transition metal comprises Pd.8. The passive adsorber of claim 7 , wherein the loading of the dispersed transition metal is atomically dispersed in pores of the zeolite.9. A method for forming a passive adsorber claim 7 , the method comprising the steps of:{'sub': 4', '4, 'exposing a NH-form of zeolite to a transition metal precursor comprising a counter ion whereby ions are exchanged between the zeolite and the transition metal precursor, to yield a NH-counter ion product; and'}{'sub': '4', 'decomposing the NH-counter ion product into a gaseous product.'}10. The method of claim 9 , wherein the zeolite comprises SSZ-13.11. The method of claim 9 , wherein the transition metal precursor comprises Pt.12. The method of claim 9 , wherein the transition metal precursor comprises Pd.13. The method of claim 9 , wherein the counter ion of the transition metal precursor comprises NO3.14. The method of claim 9 , wherein the NH-counter ion product decomposes at a ...

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Номер записи: 31
14-03-2019 дата публикации

POLARIZED FIBER MATS FOR CATALYST SUPPORT STRUCTURES

Номер: US20190076825A1
Автор: Abutaleb Ahmed, Chase George, Lolla Dinesh
Принадлежит: THE UNIVERSITY OF AKRON

A polymer-catalyst assembly includes polarized polymeric nanofibers retaining a plurality of catalytic metallic nanoparticles. A method of making the polarized polymer-catalyst assembly may include providing a fiber mat having polymeric nanofibers retaining a plurality of catalytic metallic nanoparticles, stretching the fiber mat in a uniaxial direction, simultaneous with the step of stretching, thermally heating the fiber mat, simultaneous with the steps of stretching and thermally heating, subjecting the fiber mat to an electric field, whereby the simultaneous steps of stretching, thermally heating, and subjecting thereby form a polarized fiber mat. 1. A polymer-catalyst assembly comprising polarized polymeric nanofibers retaining a plurality of catalytic metallic nanoparticles.2. The polymer-catalyst assembly of claim 1 , wherein the polarized polymeric nanofibers are made of a polymer selected from the group consisting of polyvinylidene fluoride (PVDF) claim 1 , poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) claim 1 , polymethyl methacrylate (PMMA) claim 1 , polyvinylchloride (PVC) claim 1 , polytetraflouroethylene (PTFE) claim 1 , polyethylene terephthalate (PET) claim 1 , polystyrene claim 1 , polyethylene claim 1 , polypropylene (PP) claim 1 , polycarbonate (PC) claim 1 , polysulfone (PS) claim 1 , and polyamides.3. The polymer-catalyst assembly of claim 1 , wherein the polarized polymeric nanofibers are made of polyvinylidene fluoride.4. The polymer-catalyst assembly of claim 1 , wherein the catalytic metallic nanoparticles are made of a metal selected from the group consisting of Ni claim 1 , Rh claim 1 , Ru claim 1 , Co claim 1 , Ir claim 1 , Pt claim 1 , Os claim 1 , Pd claim 1 , Au claim 1 , Pt claim 1 , Ti claim 1 , and Ir.5. The polymer-catalyst assembly of claim 1 , wherein the catalytic metallic nanoparticles are made of a metal oxide selected from the group consisting of oxides of Ni claim 1 , Rh claim 1 , Ru claim 1 , Co claim 1 , Ir ...

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Номер записи: 32
24-03-2016 дата публикации

A PROCESS FOR REGENERATING IONIC COMPOUND

Номер: US20160082426A1
Автор: Aduri Pavankumar, DUKHANDE Vibhuti, Kotra Viswanath, RAJE Vivek Prabhakar, SAKHALKAR Mangesh, UPPARA Parasu Veera
Принадлежит: RELIANCE INDUSTRIES LIMITED

The present disclosure provides a process for regenerating the deactivated ionic compound. The process involves mixing a deactivated ionic compound with at least one solvent such as ethyl acetate and neutralizing with at least one base such as triethylamine and tert-butyl amine to obtain a precipitate. The obtained precipitate is filtered to obtain a residue which is then washed with a solvent such as dichloromethane to obtain the ionic compound. 2. The process as claimed in claim 1 , wherein Rand Rare independently selected from the group consisting of methyl claim 1 , ethyl claim 1 , propyl and butyl.3. The process as claimed in claim 1 , wherein the halogen is selected from the group consisting of bromine and chlorine.4. The process as claimed in claim 1 , wherein the metal chloride is aluminium trichloride.5. The process as claimed in claim 1 , wherein base is selected from the group consisting of triethylamine claim 1 , tert-butyl amine claim 1 , sodium carbonate claim 1 , sodium bicarbonate claim 1 , potassium carbonate claim 1 , potassium bicarbonate claim 1 , ammonium carbonate and combinations.6. The process as claimed in claim 1 , wherein the step (a) is carried out at a temperature ranging from 20° C. to 50° C.7. The process as claimed in claim 1 , include steps of recovering and recycling of ethyl acetate and dichloromethane.8. The process as claimed in claim 1 , wherein the step (a) includes adjusting the pH value in the range of 7 to 7.5.9. The process as claimed in claim 1 , wherein said process characterized in that the recovery of the ionic compound ranges from 60 to 99%. The present disclosure relates to a process for regenerating ionic compound. The present disclosure particularly relates to a process for regenerating halo metal based ionic compound.Ionic compounds are compounds that are composed of ions i.e., cations and anions. Ionic compounds are suitable for use as a catalyst and as a solvent in alkylation reactions, polymerization, ...

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Номер записи: 33
26-03-2015 дата публикации

Production of Graphene and Nanoparticle Catalysts Supported on Graphene Using Microwave Radiation

Номер: US20150087498A1
Автор: Abdelsayed Victor, Abouzeid Khaled M., Afshani Parichehr, Alkhathlan Hamad Zaid, Alothman Zeid Abdullah M., Dai Qilin, El-Shall M. Samy, Gupton Frank, Hassan Hassan M. A., Khder Abd El Rahman S., Siamaki Ali R.
Принадлежит: Virginia Commonwealth University

Microwave irradiation is used to synthesize graphene and metallic nanocatalysts supported on graphene either by solid or solution phase. In solid phase methods, no solvents or additional reducing agents are required so the methods are “environmentally friendly” and economical, and the graphene and nanocatalysts are substantially free of residual contaminants. Recyclable, high efficiency Pd nanocatalysts are prepared by these methods. 1. A method of producing graphene , comprising the step of irradiating solid graphite oxide (GO) with microwave radiation , wherein said method is carried out in the absence of chemical reducing agents and solvents.2. The method of claim 1 , wherein said graphene is substantially free of residual contaminants.3. The method of claim 1 , wherein said GO provided in said providing step is mixed with at least one metal or metal alloy and said exposing step produces metal or metal alloy nanoparticles supported on said graphene.4. The method of claim 3 , wherein said at least one metal or metal alloy is selected from the group consisting of Au claim 3 , Ag claim 3 , Pd. Co claim 3 , Pd claim 3 , Co claim 3 , Au claim 3 , Ag claim 3 , Cu claim 3 , Pt claim 3 , Ni claim 3 , Fe claim 3 , Mn claim 3 , Cr claim 3 , V claim 3 , Ti claim 3 , Sc claim 3 , Ce claim 3 , Pr claim 3 , Nd claim 3 , Sm claim 3 , Gd claim 3 , Hm claim 3 , Er claim 3 , Yb claim 3 , Al claim 3 , Ga claim 3 , Sn claim 3 , Pb claim 3 , In claim 3 , Mg claim 3 , Ca claim 3 , Sr claim 3 , Na claim 3 , K claim 3 , Rb claim 3 , and Cs.5. The method of claim 4 , wherein said at least one metal or metal alloy is Pd.614-. (canceled)15. The method of claim 5 , wherein said Pd is substantially free of residual contaminants.1620-. (canceled)21. A catalyst comprising metal nanoparticles supported on a graphene sheet claim 5 , wherein said metal nanoparticles are substantially evenly distributed on said graphene sheet.22. The catalyst of claim 21 , wherein said metal nanoparticles are Pd ...

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Номер записи: 34
12-03-2020 дата публикации

METAL POWDEROUS CATALYST FOR HYDROGENATION PROCESSES

Номер: US20200078770A1
Автор: Bonrath Werner, GOY Roman, MEDLOCK Jonathan Alan
Принадлежит:

The present invention relates to a metal powder catalyst and its use in the selective catalytic hydrogenation of organic starting materials comprising a carbon-carbon triple bond. The powder catalyst comprises a metal alloy carrier, wherein the metal alloy comprises (i) 55 weight-% (wt-%)-80 wt-%, based on the total weight of the metal alloy, of Co, and (ii) 20 wt-%-40 wt-%, based on the total weight of the metal alloy, of Cr, and (iii) 2 wt-%-10 wt-%, based on the total weight of the metal alloy, of Mo, and wherein the said metal alloy is coated by a metal oxide layer and impregnated with Pd, and is characterized in that the metal oxide layer comprises CeO. 4. Use according to claim 1 , wherein hydrogen is used in the form of Hgas.5. Use according to claim 1 , wherein the metal alloy carrier comprises(i) 55 wt-%-70 wt-%, based on the total weight of the metal alloy, of Co, and(ii) 20 wt-%-35 wt-%, based on the total weight of the metal alloy, of Cr, and(iii) 4 wt-%-10 wt-%, based on the total weight of the metal alloy, of Mo.6. Use according to claim 1 , wherein the metal alloy comprises at least one further metal chosen from the group consisting of Cu claim 1 , Fe claim 1 , Ni claim 1 , Mn claim 1 , Si claim 1 , Ti claim 1 , Al and Nb.7. Use according to claim 1 , wherein the metal alloy comprises carbon.8. Use according to claim 1 , wherein the metal alloy is coated with a layer of CeOand optionally at least one further metal (Cr claim 1 , Mn claim 1 , Mg claim 1 , Cu and/or Al) oxide. The present invention is related to a new metal powder catalytic system (catalyst), its production and its use in hydrogenation processes.Powderous catalysts are well known and used in chemical reactions. Important types of such catalysts are i.e. the Lindlar catalysts.The Lindlar catalyst is a heterogeneous catalyst which consists of palladium deposited on a calcium carbonate carrier which is also treated with various forms of lead.Such catalysts are of such an importance that ...

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Номер записи: 35
21-03-2019 дата публикации

METAL-SUPPORTED CATALYST AND METHOD FOR PRODUCING HYDROGENATED CONJUGATED-DIENE-BASED POLYMER

Номер: US20190083959A1
Автор: FUJIMURA Yoshiki, NAKAI Akito, SUMIURA Kenichiro
Принадлежит: ZEON CORPORATION

A metal-supported catalyst is obtained by supporting a metal and/or a metal compound on a carrier, wherein a rate of decrease in the metal and/or the metal compound contained in the metal-supported catalyst is 20 wt % or more when the metal-supported catalyst is shaken in an aqueous solution of 2.3 wt % of polyvinylpyrrolidone in a hydrogen atmosphere at a temperature of 50° C. at 36 rpm for 1 hour. 1. A metal-supported catalyst obtained by supporting a metal and/or a metal compound on a carrier , wherein a rate of decrease in the metal and/or the metal compound contained in the metal-supported catalyst is 20 wt % or more when the metal-supported catalyst is shaken in an aqueous solution of 2.3 wt % of polyvinylpyrrolidone in a hydrogen atmosphere at a temperature of 50° C. at 36 rpm for 1 hour.2. The metal-supported catalyst according to claim 1 , wherein the metal and/or the metal compound is obtained by supporting a platinum group element and/or a platinum group element-containing compound on a carrier.3. The metal-supported catalyst according to claim 1 , wherein a weight average molecular weight claim 1 , in terms of polystyrene claim 1 , of polyvinylpyrrolidone contained in the aqueous solution of polyvinylpyrrolidone is 8 claim 1 ,000 to 12 claim 1 ,000.4. The metal-supported catalyst according to claim 1 , wherein a 50% cumulative diameter in a volume-based particle size distribution is more than 0 μm and 100 μm or less.5. The metal-supported catalyst according to claim 1 , wherein a 50% cumulative diameter in a number-based particle size distribution is more than 0 μm and 2 μm or less.6. A method for producing a hydrogenated claim 1 , conjugated diene-based polymer claim 1 , comprising hydrogenating a conjugated diene-based polymer in a solvent in the presence of the metal-supported catalyst according to . The present invention relates to a metal-supported catalyst and a method for producing a hydrogenated, conjugated diene-based polymer and, more ...

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Номер записи: 36
28-03-2019 дата публикации

PROCESS AND CATALYST FOR THE PRODUCTION OF PYRIDINE AND ALKYL DERIVATIVES THEREOF

Номер: US20190091667A1
Автор: Ramprasad Dorai
Принадлежит: W. R. GRACE & CO.-CONN.

A process for increasing the overall yield of pyridine or its alkyl pyridine derivatives during a base synthesis reaction is disclosed. The process comprises reacting a Cto Caldehyde, a Cto Cketone or a combination thereof, with ammonia and, optionally, formaldehyde, in the gas phase and in the presence of an effective amount of a particulate catalyst comprising a zeolite, zinc, a binder, and clay and optionally a matrix, wherein the catalyst has a L/B ratio of about 1.5 to about 4.0. Preferably, the zeolite is ZSM-5. A process for enhancing the catalytic activity of a zinc and zeolite containing catalyst to increase the overall yield of pyridine and/or its derivatives during a base synthesis reaction is also disclosed. 1. A base synthesis process for the preparation of pyridine or its alkyl pyridine derivatives in high yield comprising reacting a Cto Caldehyde , a Cto Cketone or a combination thereof , with ammonia and , optionally , formaldehyde , in the gas phase and in the presence of an effective as count of a particulate catalyst comprising a zeolite selected from the group consisting of ZSM-5 , ZSM-11 and combinations thereof , zinc , a binder and clay , wherein the catalyst has a L/B ratio of about 1.5 to about 4.0.2. The process of wherein the catalyst further optionally comprises a matrix material.3. The process of wherein the zeolite is ZSM-5.4. The process of wherein the organic reactants are acetaldehyde and formaldehyde claim 1 , and comprising the additional step of recovering pyridine and beta-picoline as the products of said process.5. The process of wherein the zeolite has been treated with a compound of zinc prior to incorporation into the catalyst composition.6. The process of wherein a compound of zinc is incorporated as a component of the catalyst during formulation of the catalyst composition.7. The process of wherein a compound of zinc is ion exchanged on preformed catalyst particles.8. (canceled)9. The process of wherein the compound of zinc ...

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Номер записи: 37
06-04-2017 дата публикации

LOW-TEMPERATURE OXIDATION CATALYSTS

Номер: US20170095796A1
Автор: Li Wei, OH Se H., Qi Gongshin
Принадлежит:

An example of a catalytic converter includes a catalyst to improve low temperature oxidation of carbon monoxide (CO) and hydrocarbons. The catalyst includes a support, which includes a porous alumina structure and a rare earth metal oxide promoter impregnated into pores of the porous alumina structure. The rare earth metal oxide promoter is selected from the group consisting of CeOand CeO—ZrO. A platinum group metal (PGM) is bonded to the support. 1. A catalytic converter , comprising: [{'sub': 2', '2', '2, 'a support including a porous alumina structure and a rare earth metal oxide promoter impregnated into pores of the porous alumina structure, the rare earth metal oxide promoter being selected from the group consisting of CeOand CeO—ZrO; and'}, 'a platinum group metal (PGM) bonded to the support., 'a catalyst to improve low temperature oxidation of carbon monoxide (CO) and hydrocarbons, the catalyst including2. The catalytic converter as defined in wherein the PGM is selected from the group consisting of palladium claim 1 , platinum claim 1 , rhodium claim 1 , ruthenium claim 1 , iridium claim 1 , osmium claim 1 , and combinations thereof.3. The catalytic converter as defined in wherein the rare earth metal oxide promoter is present in an amount up to about 30 wt % of the catalyst.4. The catalytic converter as defined in wherein the PGM is present in an amount ranging from about 0.1 wt % to about 10 wt % of the catalyst.5. The catalytic converter as defined in wherein the rare earth metal oxide promoter is CeO—ZrOhaving a weight ratio of CeO:ZrOranging from about 90:10 to 10:90.6. The catalytic converter as defined in claim 1 , further comprising a monolith substrate having a honeycomb structure claim 1 , wherein the catalyst is applied on interior surfaces of the honeycomb structure.7. The catalytic converter as defined in wherein the catalytic converter is a diesel oxidation catalyst (DOC).8. The catalytic converter as defined in wherein a carbon monoxide (CO) ...

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Номер записи: 38
12-04-2018 дата публикации

CATALYST FOR DIRECT NOX DECOMPOSITION AND A METHOD OF FORMING AND USING THE CATALYST

Номер: US20180099264A1
Автор: Gunugunuri Krishna Reddy, Jia Hongfei, Ling Chen, Peck Torin C.
Принадлежит:

A process of forming a direct NOx catalyst includes the steps of providing a palladium salt, providing a silicon oxide support material, mixing the palladium salt and silicon oxide support material in an aqueous solution, evaporating the aqueous solution forming a solid, calcining the solid, and then exposing the calcined solid to a pretreatment gas at a specified temperature to form a desired direct NOx catalyst. When the process includes exposing the calcined solid to helium gas at a temperature of from 650 to 1000° C. the catalyst may include a mixture of palladium and palladium oxide having a particle size of from 5 to 150 nm where the palladium particles are discrete particles without sintering and the mixture may include 41% by weight palladium oxide and 51% by weight palladium metal. 1. A direct NOx catalyst consisting of:a mixture of palladium, palladium oxide and silicon oxide, said mixture having a particle size of from 5-150 nm wherein the palladium particles are discrete particles without sintering.2. The direct NOx catalyst of wherein the mixture includes 41% by weight palladium oxide and 51% by weight palladium metal.3. The direct NOx catalyst of wherein the catalyst has a NOx conversion of from 20 to 40% at a temperature of from 300 to 500° C.4. A process of decomposing NOx comprising the steps of:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'providing a catalyst according to ;'}contacting the catalyst with a gas at least including NOx directly decomposing the NOx to form nitrogen, nitrogen oxide or oxygen at a temperature of from 200 to 800° C.5. The process of wherein the catalyst includes 41% by weight palladium oxide and 51% by weight palladium metal.6. The process of wherein the catalyst has a NOx conversion of from 20 to 40% at a temperature of from 300 to 500° C.7. A direct NOx catalyst consisting of:silicon oxide and palladium particles having a size of from 50-2000 nm wherein the palladium particles are discrete particles without ...

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Номер записи: 39
13-04-2017 дата публикации

POROUS CATALYST WASHCOATS

Номер: US20170100699A1
Автор: Cinar Esra, Liu Xinsheng, Tran Pascaline Harrison, Zhang Chunjuan
Принадлежит:

Catalyst washcoats with improved porosity and methods for making the washcoats are provided. The process comprises incorporation of an oil-in-water macroemulsion into the catalyst slurry prior to washcoating the carrier substrate, and calcining the washcoated carrier substrate to remove the oil-in-water macroemulsion. Also provided are catalyst articles comprising the washcoat and methods for abatement of exhaust gas emissions. 1. A catalyst article comprising a catalyst washcoat on a carrier substrate , wherein about 30%-100% of pores within the catalyst washcoat are about 15 μm-100 μm in size in at least one dimension.2. The catalyst article of claim 1 , wherein about 70%-100% of the pores within the catalyst washcoat are about 15 μm-100 μm in size in at least one dimension.3. The catalyst article of claim 1 , wherein about 70%-100% of the pores within the catalyst washcoat are about 15 μm-50 μm in size in at least one dimension.4. The catalyst article of claim 1 , wherein the carrier substrate is cordierite or metal.5. The catalyst article of claim 1 , wherein the catalyst washcoat comprises a precious group metal catalyst and/or a base metal catalyst.6. The catalyst article of claim 5 , wherein the precious group metal catalyst and/or base metal catalyst is impregnated on a support material.716-. (canceled)17. A system for abatement of exhaust gas emissions comprising a source of exhaust gases in fluid flow communication with a catalyst article according to claim 1 , and at least one of a soot filter claim 1 , a catalyzed soot filter and a second catalyst article in fluid flow communication with the catalyst article.18. The system of claim 17 , wherein the carrier substrate is a ceramic or metal honeycomb substrate.19. The system of claim 18 , wherein the carrier substrate is a flow-through monolithic substrate or a wall flow substrate. The invention relates to the field of catalyst washcoats and methods of making catalyst washcoats. The invention also relates ...

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Номер записи: 40
21-04-2016 дата публикации

A process for preparing ivabradine

Номер: US20160107998A1
Автор: Faris Garis, Giorgio Bertolini, Mara Sada
Принадлежит: Laboratorio Chimico Internazionale SpA

The invention refers to a process for preparing ivabradine, in particular a process for preparing an ivabradine salt.

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Номер записи: 41
11-04-2019 дата публикации

EXHAUST GAS PURIFICATION CATALYST

Номер: US20190105637A1
Автор: OHASHI Tatsuya, OHISHI Shunsuke, OTA Takaya, Saito Yoshinori, SUZUKI Hiromasa
Принадлежит:

The exemplary embodiments relate to an exhaust gas purification catalyst that is excellent in terms of HC purification capacity and warm-up performance. Such exhaust gas purification catalyst comprises a substrate and a catalyst coating layer formed on the surface of the substrate, wherein the catalyst coating layer comprises an upper and lower layer comprising a lower layer being closer to the surface of the substrate and an upper layer being relatively remote from the surface of the substrate, the upper layer of the catalyst coating layer comprises Rh, Pd, and a carrier, the upper layer of the catalyst coating layer comprises an uppermost surface Pd layer having a Pd concentration relatively higher than that in any other portion in the upper layer within an area extending over a length of 20 mm or more from one end on the upstream side in the downstream direction on the surface of the upper layer, the lower layer of the catalyst coating layer comprises at least one noble metal selected from Pd and Pt and a carrier, and 60% or more of Pd by mass in the uppermost surface Pd layer exists in a layer up to 50% of the upper layer in a thickness direction from the surface of the uppermost surface Pd layer being relatively remote from the surface of the substrate. 1. An exhaust gas purification catalyst comprising a substrate and a catalyst coating layer formed on the surface of the substrate ,wherein the catalyst coating layer comprises an upper and lower layer comprising a lower layer being closer to the surface of the substrate and an upper layer being relatively remote from the surface of the substrate,the upper layer of the catalyst coating layer comprises Rh, Pd, and a carrier,the upper layer of the catalyst coating layer comprises an uppermost surface Pd layer having a Pd concentration relatively higher than that in any other portion in the upper layer within an area extending over a length of 20 mm or more from one end on the upstream side in the downstream ...

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Номер записи: 42
02-04-2020 дата публикации

NOVEL TWC CATALYSTS FOR GASOLINE EXHAUST GAS APPLICATIONS

Номер: US20200102868A1
Автор: FUJIMORI Yuichi, Hayashi Yoshitaka, HIROTA Tomotaka, KIM Sungwook, SAIKI Shintaro, TANIKAWA Kenji, Yamada Takashi
Принадлежит:

A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end, an outlet end with an axial length L; an inlet catalyst layer beginning at the inlet end and extending for less than the axial length L, wherein the inlet catalyst layer comprises an inlet rhodium component and an inlet platinum component; an outlet catalyst layer beginning at the outlet end and extending for less than the axial length L, wherein the outlet catalyst layer comprises an outlet rhodium component. 1. A catalyst article for treating exhaust gas comprising:a substrate comprising an inlet end, an outlet end with an axial length L;an inlet catalyst layer beginning at the inlet end and extending for less than the axial length L, wherein the inlet catalyst layer comprises an inlet rhodium component and an inlet platinum component;an outlet catalyst layer beginning at the outlet end and extending for less than the axial length L, wherein the outlet catalyst layer comprises an outlet rhodium component.2. The catalyst article of claim 1 , wherein the rhodium loading in the inlet catalyst layer is no less than the rhodium loading in the outlet catalyst layer.3. The catalyst article of claim 2 , wherein the overall PGM loading in the inlet catalyst layer is greater than the overall PGM loading in the outlet catalyst layer.4. The catalyst article of claim 1 , wherein the inlet catalyst layer extends for 20 to 90 percent of the axial length L.5. The catalyst article of claim 1 , wherein the outlet catalyst layer extends for 20 to 90 percent of the axial length L.6. The catalyst article of claim 1 , wherein the total length of the outlet catalyst layer and the inlet catalyst layer is from 90 percent to 180 percent of the axial length L.7. The catalyst article of wherein the ratio of the inlet rhodium component and the outlet rhodium component is from 20:1 to 1:1.8. ...

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Номер записи: 43
20-04-2017 дата публикации

PHOTOELECTRIC CONVERSION DEVICE AND IMAGING DEVICE

Номер: US20170110517A1
Автор: Taguchi Satomi, Takasu Isao, Wada Atsushi
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a photoelectric conversion device includes a first electrode, a second electrode, a photoelectric conversion layer provided between the first electrode and the second electrode, and a first layer provided between the second electrode and the photoelectric conversion layer, the first layer including a phenyl pyridine derivative. The phenyl pyridine derivative is represented by formula (1) below, 2. The device according to claim 1 , wherein the R1 to R11 are identical to each other.3. The device according to claim 1 , wherein one of the R1 to R11 is different from another one of the R1 to R11.8. The device according to claim 1 , wherein a potential of the second electrode is higher than a potential of the first electrode.9. The device according to claim 1 , further comprising a second layer provided between the first electrode and the photoelectric conversion layer.10. The device according to claim 9 , wherein the second layer includes at least one of N claim 9 ,N′-bis(3-methylphenyl)-N claim 9 , N′-diphenylbenzidine (TPD) claim 9 , or tris(4-carbazoyl-9-yl-phenyl)amine (TCTA).11. The device according to claim 1 , wherein a work function of the second electrode is smaller than a work function of the first electrode.12. The device according to claim 1 , wherein the first electrode includes at least one oxide of indium claim 1 , zinc claim 1 , or tin.13. The device according to claim 1 , whereinthe second electrode includes at least one of aluminum, silver, gold, lithium-aluminum alloy, lithium-magnesium alloy, lithium-indium alloy, magnesium-silver alloy, magnesium-indium alloy, magnesium-aluminum alloy, indium-silver alloy, calcium-aluminum alloy, or a compound, andthe compound includes an oxide of at least one of indium, zinc, or tin.14. The device according to claim 1 , wherein the photoelectric conversion layer includes at least one of coumarin claim 1 , quinacridone claim 1 , sub-phthalocyanine claim 1 , fullerene (C60) claim 1 , ...

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Номер записи: 44
09-06-2022 дата публикации

Catalyst Material

Номер: US20220176351A1
Автор: AONO Norihiko, FUJITA Naoto, Narita Keiichi, Satsuma Atsushi, Tran Mai Huong
Принадлежит:

The present invention provides an exhaust gas purification catalyst having an excellent purification performance for purifying chemically stable methane. A catalyst material includes a carrier formed of alumina and a catalyst formed of at least one of palladium and a palladium oxide directly supported on the carrier . A specific surface area of the carrier is preferably 20 m/g or more 90 m/g or less. In one preferred aspect, a proportion of Pd(100) and PdO(101) in crystal planes of the catalyst at a joint surface between the catalyst and the carrier is 20 number % or more. 1. A catalyst material used for purifying methane , comprising:a carrier formed of alumina; anda catalyst formed of at least one of palladium and a palladium oxide directly supported by the carrier,wherein{'sup': 2', '2, 'a specific surface area of the carrier is 20 m/g or more and 90 m/g or less.'}2. The catalyst material according to claim 1 , whereina proportion of Pd(100) and PdO(101) in crystal planes of the catalyst at a joint surface between the catalyst and the carrier is 20 number % or more.3. The catalyst material according to claim 1 , whereina proportion of θ(001), θ(111), and α(104) in crystal planes of the carrier at a joint surface between the catalyst and the carrier is 30 number % or more.4. The catalyst material according to claim 1 , whereinan average particle diameter of the catalyst is 20 nm or less.5. The catalyst material according to claim 1 , whereina supported ratio of the catalyst to a total amount of the carrier and the catalyst is 10 mass % or less.6. The catalyst material according to claim 1 , whereinthe catalyst material is used for purifying exhaust gas emitted from an internal combustion engine using natural gas as fuel.7. The catalyst material according to claim 2 , whereina proportion of θ(001), θ(111), and α(104) in crystal planes of the carrier at a joint surface between the catalyst and the carrier is 30 number % or more.8. The catalyst material according to ...

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Номер записи: 45
09-06-2022 дата публикации

EXHAUST GAS PURIFICATION CATALYST DEVICE

Номер: US20220176352A1
Автор: OHASHI Tatsuya, TAKASAKI Kohei
Принадлежит: CATALER CORPORATION

An exhaust gas purification catalyst device having a substrate, a first catalyst coating layer on the substrate, and a second catalyst coating layer on the first catalyst coating layer. The first catalyst coating layer includes inorganic oxide particles, palladium carried on the inorganic oxide particles, and a barium compound. The second catalyst coating layer includes alumina particles and rhodium carried by the alumina particles. The ratio (M/M) between the mass (M) of barium in the first catalyst coating layer and the mass (M) of rhodium in the second catalyst coating layer is 5.0-60.0 inclusive. 1. An exhaust gas purification catalytic device , comprisinga substrate, a first catalytic coating layer on the substrate, and a second catalytic coating layer on the first catalytic coating layer, wherein:the first catalytic coating layer comprises inorganic oxide particles, palladium supported on the inorganic oxide particles, and a barium compound,the second catalytic coating layer comprises alumina particles and rhodium supported on the alumina particles, and{'sub': Ba', 'Rh', 'Ba', 'Rh, 'the ratio (M/M) of the mass (M) of barium in the first catalytic coating layer to the mass (M) of rhodium in the second catalytic coating layer is 5.0 or greater and 60.0 or less.'}2. The exhaust gas purification catalytic device according to claim 1 , wherein the ratio (M/M) of the mass (M) of barium in the first catalytic coating layer to the mass (M) of rhodium in the second catalytic coating layer is 6.0 or greater and 58.0 or less.3. The exhaust gas purification catalytic device according to claim 2 , wherein the ratio (M/M) of the mass (M) of barium in the first catalytic coating layer to the mass (M) of rhodium in the second catalytic coating layer is 10.0 or greater and 40.0 or less.4. The exhaust gas purification catalytic device according to claim 1 , wherein the first catalytic coating layer has a ratio (Pd/Pd) of an amount of palladium (Pd) contained in a range up to 20 ...

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Номер записи: 46
09-06-2022 дата публикации

EXHAUST GAS PURIFICATION CATALYST

Номер: US20220176353A1
Автор: Nagao Yuki, Tanaka Hiroki, WATANABE Tokuya
Принадлежит:

An exhaust gas purifying catalyst () according to the present invention is an exhaust gas purifying catalyst including the first catalyst layer (). The first catalyst layer () includes the first section () and the second section () in the exhaust gas flow direction. The first section () is located on the upstream side in the exhaust gas flow direction relative to the second section (). A catalyst layer () contains a catalytically active component including a specific element. The concentration of the specific element in the catalyst layer () is higher in the first section () than in the second section (), in terms of mass per unit volume. When the first section is divided in half along the thickness direction of the first catalyst layer (), the ratio of a1 to a2, a1/a2, is 1.1 or more, where a1 represents the mass of the specific element that is present on the surface side of the catalyst layer () and a2 represents the mass of the specific element that is present on the other side than the surface side of the catalyst layer. 1. An exhaust gas purifying catalyst comprising a first catalyst layer including a first section and a second section in an exhaust gas flow direction , the first section being located on an upstream side in the exhaust gas flow direction relative to the second section ,wherein the first section and the second section of the first catalyst layer each contains a catalytically active component including a specific element,a concentration of the specific element in the first catalyst layer is higher in the first section than in the second section, in terms of mass per unit volume,a ratio of a1 to a2, a1/a2, is 1.1 or more, where a1 represents a mass of the specific element that is present on a surface side of the first section of the first catalyst layer when the first section is divided in half along a thickness direction of the first catalyst layer, and a2 represents a mass of the specific element that is present on another side than the surface ...

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Номер записи: 47
09-06-2022 дата публикации

Exhaust Gas Purification Catalyst

Номер: US20220176354A1
Автор: Iwai Momoko, Matsushita Yamato, Noguchi Takahiro, Onoe Ryota, Tasaki Ryo
Принадлежит:

An exhaust gas purification catalyst provides excellent removal performance of methane, which is chemically stable. Exhaust gas purification catalyst includes a substrate that divides cells through which an exhaust gas flows and a catalyst layer that is provided on a surface of the substrate. The catalyst layer includes a palladium layer containing palladium that extends from a first end part which is an end part on the side into which an exhaust gas in the cells flows to a second end part which is an end part on the side from which an exhaust gas flows out, a platinum layer containing platinum that extends from the second end part to the first end part, and a rhodium layer containing rhodium that is laminated with both the palladium layer and the platinum layer. 1. An exhaust gas purification catalyst configured to be disposed in an exhaust path of an internal combustion engine and purify an exhaust gas discharged from the internal combustion engine , the exhaust gas purification catalyst comprising:a substrate that divides cells through which an exhaust gas flows; anda catalyst layer that is provided on a surface of the substrate,wherein the catalyst layer includesa palladium layer containing palladium that extends from a first end part which is an end part on a side of the cells into which an exhaust gas flows to a second end part which is an end part on a side of the cells from which an exhaust gas flows out,a platinum layer containing platinum that extends from the second end part to the first end part, anda rhodium layer containing rhodium that is laminated with both the palladium layer and the platinum layer.2. The exhaust gas purification catalyst according to claim 1 ,wherein the palladium layer is provided in a region of 80% or less when a range from the first end part to the second end part of the substrate is 100%.3. The exhaust gas purification catalyst according to claim 1 ,wherein the rhodium layer is provided in a region of 60% or more and 100% or ...

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Номер записи: 48
14-05-2015 дата публикации

Hydrothermal Stability of Oxides With Carbon Coatings

Номер: US20150133291A1
Автор: Datye Abhaya, Pham Hien
Принадлежит: STC.UNM

Catalyst support materials that are coated with a thin carbon over-layer and methods for making the same are shown and described. In general, a supporting oxide material, which may or may not have a catalytic material already deposited on the surface, is coated with a thin carbon layer. 1. A method for depositing a thin carbon over-layer on a catalyst support material , the method comprising:exposing the catalytic support material to an aqueous solution comprising between 5 and 30 wt % sucrose;stirring the mixture until the product is dry; andpartially pyrolyzing the dried product.2. The method of wherein the catalyst support material is an oxide support.3. The method of wherein the catalyst support is SBA-15.4. The method of wherein the catalyst support is alumina.5. The method of further comprising depositing a catalytic material on the surface of the catalyst support before exposing the catalytic support material to the sucrose solution.6. The method of claim 1 , wherein the aqueous solution comprises between 5 and 25 wt % sucrose.7. The method of claim 1 , wherein the aqueous solution comprises between 7 and 13 wt % sucrose.8. The method of claim 1 , wherein the aqueous solution comprises between 15 and 30 wt % sucrose.9. The method of wherein the dried product is pyrolyzed at between 200 and 600° C.10. The method of wherein the dried product is pyrolyzed at between 300 and 500° C.11. The method of wherein the dried product is pyrolyzed at between 350 and 450° C.12. The method of claim 9 , wherein the dried product is pyrolyzed for between 1 and 8 hours.13. The method of claim 9 , wherein the dried product is pyrolyzed for between 1 and 4 hours.14. The method of comprising depositing a metal catalytic material on the thin carbon over-layer.15. The method of further comprising heat treating the metal catalytic material to remove the thin carbon over-layer.16. The method of further comprising applying a new thin carbon over-layer over the metal catalytic material ...

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Номер записи: 49
31-07-2014 дата публикации

METHODS FOR THE SYNTHESIS OF DEUTERATED VINYL PYRIDINE MONOMERS

Номер: US20140213793A1
Автор: Bonnesen Peter V., Hong Kunlun, YANG Jun
Принадлежит: UT-BATTELLE, LLC

Methods for synthesizing deuterated vinylpyridine compounds of the Formula (1), wherein the method includes: (i) deuterating an acyl pyridine of the Formula (2) in the presence of a metal catalyst and DO, wherein the metal catalyst is active for hydrogen exchange in water, to produce a deuterated acyl compound of Formula (3); (ii) reducing the compound of Formula (3) with a deuterated reducing agent to convert the acyl group to an alcohol group, and (iii) dehydrating the compound produced in step (ii) with a dehydrating agent to afford the vinylpyridine compound of Formula (1). The resulting deuterated vinylpyridine compounds are also described. 2. The method of claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , and Rare deuterium atoms claim 1 , and R claim 1 , R claim 1 , and Rare hydrogen atoms.3. The method of claim 1 , wherein the metal of said metal catalyst in step (i) is selected from Pd claim 1 , Pt claim 1 , Ni claim 1 , Ru claim 1 , Rh claim 1 , Ir claim 1 , and combinations thereof.4. The method of claim 1 , wherein the metal of said metal catalyst in step (i) is selected from Pd claim 1 , Pt claim 1 , and mixtures thereof.5. The method of claim 1 , wherein said metal catalyst in step (i) is comprised of a catalytically active metal on a carbon support.6. The method of claim 1 , wherein step (i) is conducted at a temperature of at least 50° C. and below the critical temperature of water.7. The method of claim 1 , wherein step (i) is conducted at a temperature above 100° C. and below the critical temperature of water.8. The method of claim 1 , wherein step (i) is conducted at a temperature above 150° C. and below the critical temperature of water.9. The method of claim 1 , wherein step (i) is conducted at a pressure above 1 atm and below the critical pressure of water.10. The method of claim 1 , wherein said deuterated reducing agent is selected from aluminum deteurides and borodeuterides.11. The method of claim 1 , wherein said dehydrating ...

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Номер записи: 50
01-09-2022 дата публикации

Pretreatment Method for Electroless Plating, and Pretreatment Solution for Electroless Plating

Номер: US20220275516A1
Автор: Ishida Tetsuji, Shimizu Ryoyu, YAMAMOTO Hisamitsu
Принадлежит:

The purpose of the present invention is to provide a pretreatment method for electroless plating and a pretreatment solution for electroless plating capable of increasing an adsorption amount of a catalyst. A pretreatment method for electroless plating for performing an electroless plating on a substrate, the pretreatment method at least comprises: a cleaner process S a soft etching process S and/or an acid treatment process S a catalyst imparting process S and a catalyst reducing process S wherein an anionic surfactant for ionizing a part of a hydrophilic group to an anion is added to a treatment solution used in the soft etching process S and/or the acid treatment process S an ionic catalyst is imparted on the substrate in the catalyst imparting process S and the ionic catalyst is reduced in the catalyst reducing process S to increase an adsorption amount of the catalyst on the substrate. 1. A pretreatment method for electroless plating for performing an electroless plating on a substrate , the pretreatment method at least comprises: a cleaner process; a soft etching process and/or an acid treatment process; a catalyst imparting process; and a catalyst reducing process ,wherein an anionic surfactant for ionizing a part of a hydrophilic group to an anion is added to a treatment solution used in the soft etching process and/or the acid treatment process,an ionic catalyst is imparted on the substrate in the catalyst imparting process, and the ionic catalyst is reduced in the catalyst reducing process to increase an adsorption amount of the catalyst on the substrate.2. The pretreatment method for electroless plating according to claim 1 , wherein a predip process is not included.3. The pretreatment method for electroless plating according to claim 1 , wherein a concentration of the anionic surfactant is 0.01 to 10 g/L.4. The pretreatment method for electroless plating according to claim 1 , wherein the anionic surfactant is one or more of a carboxylate claim 1 , a ...

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Номер записи: 51
19-05-2016 дата публикации

PROCESS FOR THE SELECTIVE HYDROGENATION OF VEGETABLE OILS

Номер: US20160137580A1
Автор: BORSOTTI Giampietro, Capuzzi Luigi, Digioia Francesca
Принадлежит:

This invention relates to a process for the selective hydrogenation of vegetable oils. In particular the invention relates to a process for the hydrogenation of vegetable oils which is capable of selectively converting polyunsaturated fatty acids into mono-unsaturated fatty acids and products obtained therefrom. The vegetable oils obtained from the process according to the invention have in particular a high mono-unsaturated fatty acids content and are particularly suitable for use as raw materials for the synthesis of chemical intermediates. 1. Process for the catalytic hydrogenation of vegetable oils wherein the oil is placed in contact with molecular hydrogen in the presence of a catalyst comprising supported metallic Palladium , wherein said process is performed in the presence of an amount of water in an amount between 5:1 and 100:1 with respect to the weight of metallic Palladium.2. Process according to claim 1 , wherein said process is performed in the presence of an amount of water from 7:1 to 50:1 with respect to the weight of metallic Palladium.3. Process according to claim 1 , wherein the hydrogenation is performed in the presence of 30 mg/kg-500 mg/kg of metallic Palladium with respect to the vegetable oil.4. Process according to claim 1 , wherein said catalyst comprises 0.1-1% by weight of metallic Palladium.5. Process according to claim 1 , wherein said metallic Palladium is supported on a support selected from the group consisting of alumina claim 1 , carbon claim 1 , CeO claim 1 , ZrO claim 1 , CrO claim 1 , TiO claim 1 , silica claim 1 , inorganic-organic sol-gel matrix claim 1 , polycrystalline oxide substrates claim 1 , amorphous carbon claim 1 , zeolites claim 1 , aluminosilicates claim 1 , alkaline earth carbonates such as magnesium carbonate claim 1 , calcium carbonate or barium carbonate claim 1 , barium sulphate claim 1 , montmorillonites claim 1 , polymeric matrices claim 1 , multifunctional resins claim 1 , ceramic supports.6. Process ...

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Номер записи: 52
26-05-2016 дата публикации

WET CHEMICAL AND PLASMA METHODS OF FORMING STABLE PTPD CATALYSTS

Номер: US20160144352A1
Автор: Biberger Maximilian A., VAN DEN HOEK Willibrordus G.M.
Принадлежит:

A nano-particle comprising: an interior region comprising a mixed-metal oxide; and an exterior surface comprising a pure metal. In some embodiments, the mixed-metal oxide comprises aluminum oxide and a metallic pinning agent, such as palladium, copper, molybdenum, or cobalt. In some embodiments, the pure metal at the exterior surface is the same as the metallic pinning agent in the mixed-metal oxide in the interior region. In some embodiments, a catalytic nano-particle is bonded to the pure metal at the exterior surface. In some embodiments, the interior region and the exterior surface are formed using a plasma gun. In some embodiments, the interior region and the exterior surface are formed using a wet chemistry process. In some embodiments, the catalytic nano-particle is bonded to the pure metal using a plasma gun. In some embodiments, the catalytic nano-particle is bonded to the pure metal using a wet chemistry process. 1172-. (canceled)173. A method of forming nano-particles , the method comprising:forming a plurality of aluminum-palladium carrier nano-particles using a plasma gun, wherein the aluminum-palladium carrier nano-particles comprise an interior region and an exterior surface, the interior region comprising a mixed-metal oxide that includes aluminum oxide and palladium, and the exterior surface comprising pure metallic palladium; andaffixing platinum nano-particles to the pure metallic palladium on the aluminum-palladium carrier nano-particles using a wet chemistry process;wherein forming the plurality of aluminum-palladium carrier nano-particles using the plasma gun comprises:loading a quantity of aluminum oxide material and a quantity of palladium material into the plasma gun in a desired ratio, wherein the aluminum oxide material and the palladium material are in powder form;vaporizing the quantity of aluminum oxide material and the quantity of palladium material using the plasma gun, thereby forming a vapor cloud comprising vaporized aluminum oxide ...

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Номер записи: 53
02-06-2016 дата публикации

METAL-ORGANIC MATERIALS AND METHOD FOR PREPARATION

Номер: US20160152568A1
Автор: BALGLEY Renata, LAHAV Michal, SHANKAR POOPANAL Sreejith, VAN DER BOOM Milko
Принадлежит:

The present invention provides metal-organic materials, more specifically organometallic polymers, comprising polypyridyl organic ligands such as tetrakis(4-(pyridin-4-ylethynyl)phenyl)methane, tetrakis(4-(2-(pyridin-4-yl)vinyl)phenyl)methane,3,5,7-tetrakis(4-(pyridin-4-ylethynyl)phenyl)adamantane or 1,3,5,7-tetrakis(4-(2-(pyridine-4-yl)vinyl)phenyl)adamantine, and metal ions structurally coordinated with said ligands, and having three-dimensional crystalline micro or sub-micro structure; as well as a method for the preparation thereof. These metal-organic materials are useful as adsorbents in processes for gas adsorption or separation. 2. The metal-organic material of claim 1 , wherein Rand Reach independently is absent claim 1 , or selected from (C-C)alkylene claim 1 , (C-C)alkenylene claim 1 , (C-C)alkynylene claim 1 , cycloalkylene claim 1 , heterocycloalkylene claim 1 , arylene-diyl claim 1 , heteroarylene-diyl claim 1 , or —N═N— claim 1 , wherein said alkylene claim 1 , alkenylene claim 1 , alkynylene claim 1 , cycloalkylene claim 1 , heterocycloalkylene claim 1 , arylene-diyl and heteroarylene-diyl may optionally be substituted with one or more groups each independently selected from halogen claim 1 , —OH claim 1 , —CN claim 1 , —COH claim 1 , —COOH claim 1 , —CONH claim 1 , —OCOOH claim 1 , —OCONH claim 1 , —(C-C)alkyl claim 1 , —O—(C-C)alkyl claim 1 , —(C-C)alkylene-COOH claim 1 , —NH claim 1 , —NO claim 1 , —SH claim 1 , —SOH claim 1 , or —S(═O)H claim 1 , or said alkylene claim 1 , alkenylene and alkynylene may optionally be interrupted by one or more identical or different heteroatoms selected from S claim 1 , O or N claim 1 , and/or at least one group selected from —N═N— claim 1 , —NH—CO— claim 1 , —CO—NH— claim 1 , —N(C-Calkyl)- claim 1 , —N(C-Caryl)- claim 1 , or —(C-C)arylene-diyl-.3. The metal-organic material of claim 2 , wherein Rand Reach independently is absent claim 2 , or selected from (C-C)alkylene claim 2 , (C-C)alkenylene claim 2 , (C-C) ...

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Номер записи: 54
17-06-2021 дата публикации

PROCESS FOR THE SYNTHESIS OF N-SUBSTITUTED LACTAMS AND AMIDES

Номер: US20210179562A1
Автор: JR. Robert, Keenan Scott, Li Xin, Schutter, Tang Lihao, Zhang Xiawei
Принадлежит:

A process for the synthesis of N-alkylated lactams via reductive alkylation. The process of the present disclosure may be conducted by the addition of an aldehyde to a lactam in the presence of a catalyst under a reducing atmosphere. 2. The process of claim 1 , wherein the total content of process solvents is less than 1000 ppm.3. The process of claim 1 , wherein the catalyst is a palladium catalyst.4. The process of claim 1 , wherein the reacting step is carried out at a temperature from 50° C. to 200° C.5. The process of claim 1 , wherein the reacting step is carried out in the presence of a hydrogen atmosphere at a pressure of 100 psi to 200 psi.6. The process of claim 1 , wherein the lactam is caprolactam and the N-substituted lactam is N-methylcaprolactam.7. The process of claim 1 , wherein the lactam is caprolactam and the N-substituted lactam is N-ethylcaprolactam.8. The process of claim 1 , wherein the N-substituted lactam is obtained at a yield of greater than 90%.9. A process for preparing a substituted lactam claim 1 , comprising:reacting caprolactam with an alkylating agent selected from paraformaldehyde, formaldehyde, and acetaldehyde; a catalyst;', 'hydrogen; and', 'a total content of process solvents of less than 1500 ppm,, 'in the presence ofto form water and an N-substituted lactam selected from the group consisting of N-methylcaprolactam and N-ethylcaprolactam.10. The process of claim 9 , wherein the total content of process solvents is less than 1000 ppm.11. The process of claim 9 , wherein the catalyst is a palladium catalyst.12. The process of claim 9 , wherein the reacting step is carried out at a temperature from 50° C. to 200° C.13. The process of claim 9 , wherein the reacting step is carried out in the presence of a hydrogen atmosphere at a pressure of 100 to 200 psi.14. The process of claim 9 , wherein the N-substituted lactam is N-methylcaprolactam.15. The process of claim 9 , wherein the N-substituted lactam is N-ethylcaprolactam.16. The ...

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Номер записи: 55
09-06-2016 дата публикации

PROCESS FOR PRODUCING FURAN FROM FURFURAL FROM BIOMASS

Номер: US20160159762A1
Автор: Binder Thomas, Wang Zheng
Принадлежит: ARCHER DANIELS MIDLAND COMPANY

A process is described for producing furan from furfural from biomass, wherein furfural in an aqueous mass or stream from the liquefaction of biomass or a biomass fraction including one or more furfural precursors is extracted into an organic solvent which is readily separable from furan by simple distillation at atmospheric pressure, furfural is catalytically decarbonylated to furan in the organic solvent and furan is separated from the organic solvent by simple distillation. The furan from the distillation step may be hydrogenated to provide tetrahydrofuran. 1. A process for producing furan from furfural from biomass , wherein furfural in an aqueous mass or stream from the liquefaction of biomass or a biomass fraction including one or more furfural precursors is extracted into an organic solvent which is readily separable from furan by simple distillation at atmospheric pressure , furfural is catalytically decarbonylated to furan in the organic solvent and furan is separated from the organic solvent by simple distillation.2. A process according to claim 1 , further comprising the step of hydrogenating furan from the simple distillation to produce tetrahydrofuran.3. A process according to or claim 1 , wherein toluene is used to extract furfural from the aqueous mass or stream.4. A process according to or claim 1 , wherein furfural is decarbonylated to furan in the presence of a supported palladium catalyst.5. A process according to claim 4 , wherein the support is carbon or alumina.6. A process according to claim 2 , wherein furan is hydrogenated to tetrahydrofuran in the presence of a Raney nickel catalyst. The present invention relates to the production of furan and other products such as tetrahydrofuran from furfural produced from biomass.Furfural, also known as furan-2-carbaldehyde, is a valuable intermediate in the production of various commercially valuable materials. For example, furfural can be decarbonylated to produce furan, which in turn can be ...

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Номер записи: 56
08-06-2017 дата публикации

PROCESS AND CATALYST FOR THE PRODUCTION OF PYRIDINE AND ALKYL DERIVATIVES THEREOF

Номер: US20170157599A1
Автор: Ramprasad Dorai
Принадлежит: W. R. GRACE & CO.-CONN.

A process for increasing the overall yield of pyridine or its alkyl pyridine derivatives during a base synthesis reaction is disclosed. The process comprises reacting a Cto Caldehyde, a Cto Cketone or a combination thereof, with ammonia and, optionally, formaldehyde, in the gas phase and in the presence of an effective amount of a particulate catalyst comprising a zeolite, zinc, a binder, and clay and optionally a matrix, wherein the catalyst has a L/B ratio of about 1.5 to about 4.0. Preferably, the zeolite is ZSM-5. A process for enhancing the catalytic activity of a zinc and zeolite containing catalyst to increase the overall yield of pyridine and/or its derivatives during a base synthesis reaction is also disclosed. 142-. (canceled)43. A method of enhancing the catalytic activity of zinc containing zeolite-based heterogeneous catalyst for the production of pyridine and its alkyl derivatives during a base synthesis reaction , the method comprising:(1) preparing an aqueous slurry comprising components (a) a zeolite selected the group consisting of ZSM-5, ZSM-11 and combinations thereof, (b) optionally zinc, (c) a binder and (d) clay;(2) adjusting the amounts of components a-d in the slurry to an amount sufficient to provide an L/B ratio of about 1.5 to about 4.0, as measured by diffuse reflectance IR spectrum, in the final catalyst composition;(3) spray drying the slurry to provide catalyst particles having a particle size of about 40 μm to about 200 μm;(4) calcining the particles to provide a final catalyst composition having an L/B ratio of about 1.5 to about 4.0.44. The method of wherein the zeolite component in the aqueous slurry of step (1) is ZSM-5.45. The method of wherein the zeolite has been treated with a compound of zinc prior to incorporation into the aqueous slurry of step (1).46. The method of wherein a compound of zinc is incorporated as a component of the aqueous slurry of step (1).47. The method of comprising further ion exchanging a compound of ...

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Номер записи: 57
18-06-2015 дата публикации

COMPOSITIONS OF LEAN NOX TRAP (LNT) SYSTEMS AND METHODS OF MAKING AND USING SAME

Номер: US20150165418A1
Автор: Biberger Maximilian A., KEARL Bryant, LEAMON David, QI XIWANG, Yin Qinghua
Принадлежит:

The present disclosure relates to a substrate comprising nanoparticle catalysts and NOstorage materials for treatment of gases, and washcoats for use in preparing such a substrate. Also provided are methods of preparation of the nanoparticle catalysts and NOstorage materials, as well as methods of preparation of the substrate comprising the nanoparticle catalysts and NOstorage materials. More specifically, the present disclosure relates to a coated substrate comprising nanoparticle catalysts and NOstorage materials for lean NOtrap (LNT) systems, useful in the treatment of exhaust gases. 1: A coated substrate comprising:a substrate;a washcoat layer comprising oxidative catalytically active micron-particles, the oxidative catalytically active micron-particles comprising oxidative composite nanoparticles bonded to a first micron-sized carrier particle, the oxidative composite nanoparticles comprising a first support nanoparticle and an oxidative catalytic nanoparticle;a washcoat layer comprising reductive catalytically active micron-particles, the reductive catalytically active micron-particles comprising reductive composite nanoparticles bonded to a second micron-sized carrier particle, the reductive composite nanoparticles comprising a second support nanoparticle and a reductive catalytic nanoparticle; and{'sub': x', 'x, 'a washcoat layer comprising NOtrapping particles, the NOtrapping particles comprising a micron-sized cerium oxide-containing material.'}2: A coated substrate comprising:a substrate;a washcoat layer comprising oxidative catalytically active micron-particles, the oxidative catalytically active micron-particles comprising oxidative composite nanoparticles embedded in a first micron-sized porous carrier, the oxidative composite nanoparticles comprising a first support nanoparticle and an oxidative catalytic nanoparticle;a washcoat layer comprising reductive catalytically active micron-particles, the reductive catalytically active micron-particles ...

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Номер записи: 58
07-06-2018 дата публикации

EXHAUST GAS TREATMENT SYSTEM

Номер: US20180156090A1
Автор: Hochmuth John K., XUE Wen-Mei
Принадлежит:

Described are exhaust gas treatment systems for treatment of a gasoline engine exhaust gas stream. The exhaust gas treatment systems comprise an ammonia generating and hydrocarbon oxidation catalyst, a TWC catalyst, and an ammonia selective catalytic reduction (SCR) catalyst downstream of the TWC catalyst. The ammonia generating and hydrocarbon oxidation catalyst comprises a refractory metal oxide support, a platinum component, and a palladium component. The ammonia generating and hydrocarbon oxidation catalyst is substantially free of ceria and substantially free of NOstorage components. The platinum and palladium components are present in a platinum to palladium ratio of greater than about 1 to 1. 1. A gasoline engine exhaust gas treatment system comprising:{'sub': 'x', 'an ammonia generating and hydrocarbon oxidation catalyst comprising a refractory metal oxide support, a platinum component, and a palladium component, wherein the platinum component and the palladium components are present in a platinum to palladium (Pt/Pd) ratio of greater than 1 to 1, and wherein the ammonia generating and hydrocarbon oxidation catalyst is substantially free of ceria and substantially free of a NOstorage component;'}a three-way conversion (TWC) catalyst; andan ammonia selective catalytic reduction (SCR) catalyst downstream of the three-way conversion catalyst.2. The gasoline engine exhaust gas treatment system of claim 1 , wherein the refractory metal oxide support is selected from alumina claim 1 , silica claim 1 , titania claim 1 , zirconia and combinations thereof.3. The gasoline engine exhaust gas treatment system of claim 1 , wherein the Pt/Pd ratio is about 2/1 to about 100/1.4. The gasoline engine exhaust gas treatment system of claim 3 , wherein the Pt/Pd ratio is about 4/1 to about 20/1.5. The gasoline engine exhaust gas treatment system of claim 1 , wherein the TWC catalyst is downstream of the ammonia generating and hydrocarbon oxidation catalyst.6. The gasoline ...

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Номер записи: 59
28-08-2014 дата публикации

Oxidation Catalyst for a Combustion Engine

Номер: US20140241964A1
Автор: BERGEAL David, CHIFFEY ANDREW FRANCIS, GOODWIN John Benjamin, PHILLIPS PAUL RICHARD
Принадлежит: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

An oxidation catalyst for treating an exhaust gas produced by a combustion engine, wherein the oxidation catalyst comprises a substrate and a catalyst layer, wherein the catalyst layer comprises: a first support material; a first noble metal; and a second noble metal; wherein the catalyst layer is disposed on a surface of the substrate, and the catalyst layer has a non-uniform distribution of the first noble metal in a direction perpendicular to the surface of the substrate. The oxidation catalyst can be used to oxidise carbon monoxide (CO), hydrocarbons (HCs) and also oxides of nitrogen (NO) in such an exhaust gas. 1. An oxidation catalyst for treating an exhaust gas produced by a combustion engine , wherein the oxidation catalyst comprises a substrate and a catalyst layer , wherein the catalyst layer comprises:a first support material;a first noble metal; anda second noble metal;wherein the catalyst layer is disposed on a surface of the substrate, and the catalyst layer has a non-uniform distribution of the first noble metal in a direction perpendicular to the surface of the substrate.2. An oxidation catalyst according to claim 1 , wherein the non-uniform distribution of the first noble metal in a direction perpendicular to the surface of the substrate is a gradated distribution of the first noble metal.3. An oxidation catalyst according to claim 1 , wherein the non-uniform distribution of the first noble metal in a direction perpendicular to the surface of the substrate is a step-wise distribution of the first noble metal.4. An oxidation catalyst according to claim 1 , wherein the amount of the first noble metal increases in a perpendicular direction toward the surface of the substrate.5. An oxidation catalyst according to claim 1 , wherein the amount of the first noble metal decreases in a perpendicular direction toward the surface of the substrate.6. An oxidation catalyst according to claim 5 , wherein the catalyst layer has a first surface and a second surface ...

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Номер записи: 60
16-06-2016 дата публикации

Sulfur-resistant Catalyst for Aromatics Saturated Hydrogenation and Preparation Method Thereof

Номер: US20160167017A1
Автор: CHU Hongling, Feng Yuxiao, Gao Shanbin, Guo Jintao, Hu Sheng, JI Yuanyuan, JIANG Lili, LI RUI, Li Ruifeng, LIU Wenyong, Liu Yanfeng, Sun Famin, Sun Ran, Tang Cheng, Wang Xiaofeng, WANG Xinmiao, WU Xianjun, Xie Bin, Yang Xiaodong, Yu Chunmei, ZHANG Guojia, ZHANG Quanguo, Zhang Wencheng, ZHAO Tan
Принадлежит:

The present invention relates to a method for preparing a sulfur-resistant catalyst for aromatics saturated hydrogenation, comprising the steps of: preparing noble metal impregnation solutions from a noble metal and deionized water or an acid solution; impregnating a carrier with the impregnation solutions sequentially from high to low concentrations by incipient impregnation; homogenizing, drying, and calcinating to obtain the sulfur-resistant catalyst for aromatics saturated hydrogenation. The catalyst for aromatics saturated hydrogenation prepared by the method according to the present invention is primarily used in processing low-sulfur and high-aromatics light distillate, middle distillate, atmospheric gas oil, and vacuum gas oil. The method according to the present invention is advantageous in that the catalyst for aromatics saturated hydrogenation exhibits good hydrofining performance, superior aromatics saturation performance, high liquid yield of products, as well as excellent desulfurization and sulfur-resistance, and the catalyst has remarkable effects in use and a great prospect of application. 1. A method for preparing a sulfur-resistant catalyst for aromatics saturated hydrogenation , comprising the steps of:(1) preparing noble metal impregnation solutions from a noble metal and deionized water or an acid solution;(2) impregnating a carrier consisting of an inorganic porous material with the impregnation solutions by incipient impregnation; and(3) homogenizing for 10 min to 3 h, drying at 90 to 140° C. for 3 to 6 h, and calcinating at 350 to 650° C. for 3 to 10 h to obtain a sulfur-resistant catalyst for aromatics saturated hydrogenation;characterized in that, during the impregnation in the above step (2), the carrier is impregnated sequentially with the impregnation solutions from high to low concentrations, or a noble metal impregnation solution at a high concentration is prepared and then the concentration of the active metal-containing impregnation ...

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Номер записи: 61
16-06-2016 дата публикации

AROMATIC HYDROGENATION CATALYSTS AND USES THEREOF

Номер: US20160167032A1
Автор: Afeworki Mobae, Beeckman Jean Willem Lodewijk, Benitez Kiara M., CALABRO David Charles, Ide Matthew Scott, Li Quanchang, McCarthy Stephen John, Podsiadlo Paul, Weston Simon Christopher, ZHANG LEI
Принадлежит: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY

Hydrogenation catalysts for aromatic hydrogenation including an organosilica material support, which is a polymer comprising independent units of a monomer of Formula [ZOZOSiCH](I), wherein each Zand Zindependently represent a hydrogen atom, a C-Calkyl group or a bond to a silicon atom of another monomer; and at least one catalyst metal are provided herein. Methods of making the hydrogenation catalysts and processes of using, e.g., aromatic hydrogenation, the hydrogenation catalyst are also provided herein. 1. An aromatics hydrogenation process for a hydrocarbon feedstream comprising:a) contacting a hydrocarbon feedstream comprising aromatics with a hydrogenation catalyst in the presence of a hydrogen-containing treat gas in a reaction stage operated under effective aromatics hydrogenation conditions to produce a reaction product with reduced aromatics content, [{'sup': 1', '2', '1', '2, 'sub': 2', '3', '1', '4, '(i) an organosilica material support, which is a polymer comprising independent units of a monomer of Formula [ZOZOSiCH](I), wherein each Zand Zindependently represent a hydrogen atom, a C-Calkyl group or a bond to a silicon atom of another monomer; and'}, '(ii) at least one catalyst metal selected from the group consisting of a Group 8 metal, a Group 9 metal, a Group 10 metal and a combination thereof., 'wherein the hydrogenation catalyst comprises2. The process of claim 1 , wherein each Zand Zindependently represent a hydrogen atom claim 1 , a C-Calkyl group or a bond to a silicon atom of another monomer.3. The process of claim 2 , wherein each Zand Zindependently represent a hydrogen atom claim 2 , ethyl or a bond to a silicon atom of another monomer.4. The process of claim 1 , wherein the organosilica material support further comprises at least one other monomer selected from the group consisting of:{'sup': 3', '4', '3', '4, 'sub': 2', '3', '1', '4', '1', '6, '(i) an independent unit of Formula [ZOZSiCH](II), wherein each Zrepresents a hydrogen atom, a ...

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Номер записи: 62
04-09-2014 дата публикации

WET CHEMICAL AND PLASMA METHODS OF FORMING STABLE PTPD CATALYSTS

Номер: US20140249021A1
Автор: Biberger Maximilian A., VAN DEN HOEK Wilbert
Принадлежит:

A nano-particle comprising: an interior region comprising a mixed-metal oxide; and an exterior surface comprising a pure metal. In some embodiments, the mixed-metal oxide comprises aluminum oxide and a metallic pinning agent, such as palladium, copper, molybdenum, or cobalt. In some embodiments, the pure metal at the exterior surface is the same as the metallic pinning agent in the mixed-metal oxide in the interior region. In some embodiments, a catalytic nano-particle is bonded to the pure metal at the exterior surface. In some embodiments, the interior region and the exterior surface are formed using a plasma gun. In some embodiments, the interior region and the exterior surface are formed using a wet chemistry process. In some embodiments, the catalytic nano-particle is bonded to the pure metal using a plasma gun. In some embodiments, the catalytic nano-particle is bonded to the pure metal using a wet chemistry process. 1. A nano-particle comprising: 'an exterior surface comprising pure metallic palladium.', 'an interior region comprising a mixed-metal oxide, wherein the mixed-metal oxide comprises aluminum oxide and palladium; and'}2. The nano-particle of claim 1 , wherein the palladium in the interior region extends to and is bonded with the pure metallic palladium at the exterior surface.3. The nano-particle of claim 1 , wherein the nano-particle comprises a diameter of approximately 10 nanometers or less.4. The nano-particle of claim 1 , wherein the mixed-metal oxide forms a center core of the nano-particle.5. The nano-particle of claim 4 , wherein the mixed-metal oxide consists only of aluminum oxide and palladium.6. The nano-particle of claim 1 , wherein the mixed-metal oxide forms a monolayer that surrounds a center core of the nano-particle.7. The nano-particle of claim 6 , wherein the center core comprises silica.8. A method of forming nano-particles claim 6 , the method comprising:loading a quantity of aluminum oxide material and a quantity of palladium ...

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Номер записи: 63
29-09-2022 дата публикации

HONEYCOMB FILTER

Номер: US20220305422A1
Автор: ISHIDA Sachiko, YOSHIOKA Fumihiko
Принадлежит: NGK Insulators, Ltd.

A honeycomb filter includes a honeycomb structure having a porous partition wall disposed to surround a plurality of cells; and a plugging portion provided at one end of the cell, wherein the honeycomb structure has an inflow side region including a range of up to at least 30% with respect to the total length of the honeycomb structure with the inflow end face as the starting point and an outflow side region including a range of up to at least 20% with respect to the total length of the honeycomb structure with the outflow end face as the starting point, in the extending direction of the cell of the honeycomb structure, an average pore diameter of the partition wall in the inflow side region is 15 to 20 μm and an average pore diameter of the partition wall in the outflow side region is 9 to 14 μm. 1. A honeycomb filter comprising: a honeycomb structure having a porous partition wall disposed so as to surround a plurality of cells serving as a fluid through channel extending from an inflow end face to an outflow end face; and a plugging portion provided so as to plug end at any one of the inflow end face side or the outflow end face side of the cell , whereinthe cells having the plugging portion at ends on the outflow end face side and that are open on the inflow end face side are inflow cells,the cells having the plugging portion at ends on the inflow end face side and that are open on the outflow end face side are outflow cells,the honeycomb structure has an inflow side region including a range of up to at least 30% with respect to the total length of the honeycomb structure with the inflow end face of the honeycomb structure as the starting point and an outflow side region including a range of up to at least 20% with respect to the total length of the honeycomb structure with the outflow end face of the honeycomb structure as the starting point, in the extending direction of the cell of the honeycomb structure,an average pore diameter of the partition wall in the ...

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Номер записи: 64
29-09-2022 дата публикации

NOx REDUCING CATALYST AND EXHAUST GAS PURIFICATION SYSTEM FOR VEHICLE

Номер: US20220305466A1
Автор: LEE Hyokyung, Yoon Dalyoung
Принадлежит:

Disclosed are a NOx reducing catalyst including a carrier including a cerium-zirconium composite oxide, and the palladium supported on the carrier. The catalyst includes palladium in an amount of about 1 wt% to about 5 wt% based on the total weight of the catalyst. 1. An NOx reducing catalyst , comprising:a carrier comprising a cerium-zirconium composite oxide, andpalladium supported on the carrier,wherein the catalyst comprises the palladium in an amount of about 1 wt% to about 5 wt% based on the total weight of the catalyst.2. The NOx reducing catalyst of claim 1 , wherein the cerium-zirconium composite oxide is a composite or solid solution comprising cerium oxide (CeO) and zirconium oxide (ZrO).3. The NOx reducing catalyst of claim 1 , wherein the cerium-zirconium composite oxide comprises cerium oxide in an amount of about 30 wt% to about 60 wt% based on the total weight of the cerium-zirconium composite oxide.4. The NOx reducing catalyst of claim 1 , wherein the cerium-zirconium composite oxide further comprises a functional element comprising one or more selected from the group consisting of La claim 1 , Y claim 1 , Pr claim 1 , and Nd.5. The NOx reducing catalyst of claim 1 , wherein the cerium-zirconium composite oxide comprises a functional element in an amount of about 5 wt% to about 12 wt% based on the total weight of the cerium-zirconium composite oxide.6. An exhaust gas purification system for a vehicle provided on an exhaust pipe connected to the exhaust side of the engine to purify the exhaust gas of the engine claim 1 , comprising claim 1 ,a housing disposed on the exhaust pipe to receive the exhaust gas discharged from the engine and to discharge the received exhaust gas to the rear;a front end catalyst built in the housing to primarily purify the exhaust gas introduced into the housing through a front end of the housing; anda rear end catalyst built in the housing to secondarily purify the exhaust gas passing through the front end catalyst before ...

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Номер записи: 65
08-07-2021 дата публикации

NOVEL MULTI-REGION TWC CATALYSTS FOR GASOLINE ENGINE EXHAUST GAS TREATMENTS

Номер: US20210205788A1
Автор: Kadono Takeshi, TANIKAWA Kenji
Принадлежит:

A catalytic article for treating exhaust gas comprising: a first catalytic region beginning at the inlet end and extending for less than the axial length L, wherein the first catalytic region comprises a first palladium component and a first oxygen storage capacity (OSC) material comprising ceria; a second catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the second catalytic region comprises a second palladium component and a second OSC material comprising ceria; a third catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the third catalytic region comprises a third rhodium component and a third OSC material comprising ceria; wherein at least a portion of the first catalytic region is not covered by the second catalytic region and/or the third catalytic region; 1. A catalyst article for treating exhaust gas comprising:a substrate comprising an inlet end, an outlet end with an axial length L;a first catalytic region beginning at the inlet end and extending for less than the axial length L, wherein the first catalytic region comprises a first palladium component and a first oxygen storage capacity (OSC) material comprising ceria;a second catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the second catalytic region comprises a second palladium component and a second OSC material comprising ceria;a third catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the third catalytic region comprises a third rhodium component and a third OSC material comprising ceria;wherein at least a portion of the first catalytic region is not covered by the second catalytic region and/or the third catalytic region; andwherein (a) the ceria amount in the first catalytic region is less than 50% of the total ceria amount in the first, second, and third catalytic regions; or (b) the ceria loading ...

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Номер записи: 66
18-09-2014 дата публикации

Zoned Catalyst For Diesel Applications

Номер: US20140271429A1
Автор: Kazi M. Shahjahan, Rioult Fabien A., Roth Stanley A., Voss Kenneth E.
Принадлежит: BASF CORPORATION

An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, an oxidation catalyst composite including a zoned diesel oxidation catalyst with a first washcoat zone with a Pt/Pd ratio that is less than 3:1 and a PGM loading at least twice that of a second washcoat zone. 1. An oxidation catalyst composite for abatement of exhaust gas emissions from a diesel engine comprising:a substrate having a length, an inlet end and an outlet end, a catalytic material on the carrier, the catalytic material including a first washcoat zone and a second washcoat zone;the first washcoat zone comprising a first washcoat layer including platinum Pt and palladium Pd platinum group metal (PGM) components and a first refractory metal oxide support, the first washcoat zone adjacent the inlet end of the substrate; andthe second washcoat zone comprising a second washcoat layer including platinum and palladium PGM components and a second refractory metal oxide support, the second washcoat layer adjacent the outlet end of the substrate;wherein the first washcoat zone has a length that is shorter than the second washcoat zone, wherein the oxidation catalyst does not include an elevated PGM loading on the inlet face of the catalyst and the first washcoat zone has a PGM loading at least twice that of the second washcoat zone, and the first washcoat zone has a Pt/Pd ratio less than 3:1.2. The oxidation catalyst composite of claim 1 , wherein the second washcoat zone has a Pt:Pd ratio greater than 3:1.3. The oxidation catalyst composite of claim 2 , wherein the Pt:Pd ratio in the second washcoat zone is greater than 5:1.4. The oxidation catalyst composite of claim 3 , wherein the Pt:Pd ratio in the second washcoat zone is greater than 8:1.5. The oxidation catalyst composite of claim 1 , wherein the refractory metal oxide support comprises a large pore alumina.6. The oxidation catalyst composite of claim 5 , ...

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Номер записи: 67
09-07-2015 дата публикации

Catalyst Carrier and Exhaust Gas Purifying Catalyst

Номер: US20150190786A1
Автор: Imada Yasunori, Kanemitsu Hidekazu
Принадлежит:

Provided is a catalyst carrier which contains an apatite-type composite oxide and provides a catalyst carrier which can enhance NOx purifying performance by means of improvement of phosphorus poisoning. Provided is a catalyst carrier which contains a composite oxide expressed by the following composition formula: LaPrM(SiN)O(wherein 2.50≦x≦6.00, 2.50≦y≦6.00, 5.00≦x+y≦9.50, 0.00≦z≦3.00, 0.00≦w≦3.00, M represents one or two or more elements selected from alkaline earth metal elements and rare earth elements, and N represents at least one kind of cation element). 1. A catalyst carrier containing a composite oxide expressed by the following composition formula: LaPrM(SiN)O(wherein 2.50≦x≦6.00 , 2.50≦y≦6.00 , 5.00≦x+y≦9.50 , 0.00≦z≦3.00 , 0.00≦w≦3.00 , M represents one or two or more elements selected from alkaline earth metal elements and rare earth elements , and N represents at least one kind of cation element).2. The catalyst carrier according to claim 1 , wherein “M” in the formula includes one or two or more elements selected from the group consisting of Ba claim 1 , Sr claim 1 , Y claim 1 , and Nd.3. An exhaust gas purifying catalyst containing the catalyst carrier according to and a catalyst active component that exists in the catalyst carrier as a solid solution or is supported on the catalyst carrier.4. An exhaust gas purifying catalyst containing the catalyst carrier according to and a catalyst active component that exists in the catalyst carrier as a solid solution or is supported on the catalyst carrier. The present invention relates to a catalyst carrier for supporting a catalyst active component and an exhaust gas purifying catalyst using the catalyst carrier.An exhaust gas of an internal combustion engine such as an automobile which use gasoline for fuel contains hazardous components such as hydrocarbon (THC), carbon monoxide (CO), and nitrogen oxide (NOx). It is necessary to simultaneously purify and exhaust each of the hazardous components using an ...

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Номер записи: 68
09-07-2015 дата публикации

NOx TRAP

Номер: US20150190793A1
Автор: PHILLIPS PAUL RICHARD, SWALLOW DANIEL
Принадлежит:

A NOtrap, and its use in an exhaust system for internal combustion engines, is disclosed. The NOtrap comprises a substrate and three layers on the substrate. The first layer comprises a first platinum group metal, a first NOstorage component, and a first support; the second layer comprises a second platinum group metal, a second NOstorage component, and a second support; and the third layer comprises rhodium and a third support. The platinum group metal loading in the first layer is from 1 to 40 percent of the platinum group metal loading in the second layer. In addition, the first NOstorage component and the second NOstorage component are the same, and the first support and the second support are the same. The NOtrap is less prone to deactivation over numerous desulfation/NOtrap regeneration cycles. 1. A NOtrap , comprising a substrate and:{'sub': 'x', '(a) a first layer comprising a first platinum group metal, a first NOstorage component, and a first support;'}{'sub': 'x', '(b) a second layer comprising a second platinum group metal, a second NOstorage component, and a second support; and'}(c) a third layer comprising rhodium and a third support,{'sub': x', 'x, 'wherein the first layer has a platinum group metal loading that is from 1 to 40 percent of the platinum group metal loading in the second layer, the first NOstorage component and the second NOstorage component are the same, and the first support and the second support are the same.'}2. The NOtrap of wherein the substrate is a flow-through monolith.3. The NOtrap of wherein the first layer is disposed on the substrate claim 1 , the second layer is disposed on the first layer claim 1 , and the third layer is disposed on the second layer.4. The NOtrap of wherein the first platinum group metal is selected from the group consisting of palladium claim 1 , platinum claim 1 , gold claim 1 , and mixtures thereof.5. The NOtrap of wherein the second platinum group metal is selected from the group consisting of ...

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Номер записи: 69
29-06-2017 дата публикации

Silanol Compound, Composition, and Method for Producing Silanol Compound

Номер: US20170183363A1
Автор: IGARASHI Masayasu, Matsumoto Tomohiro, Sato Kazuhiko, Shimada Shigeru
Принадлежит: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

The purpose of the present invention is to provide silanol compounds that can be used as raw materials of siloxane compounds and the like, and a composition of the silanol compounds, as well as to provide a production method that makes it possible to produce silanol compounds at excellent yield. A composition comprising 5 mass % to 100 mass % of a silanol compound represented by Formulas (A) to (C) can be prepared by devising to produce silanol compounds under water-free conditions, to produce silanol compounds in a solvent having the effect of suppressing the condensation of silanol compounds, and to perform other such processes, the composition being able to be used as a raw material or the like of siloxane compounds because the silanol compounds can be stably present in the resulting composition. 2. The composition according to claim 1 , wherein the amount of at least one of the silanol compound represented by Formulas (A) to (C) is 10 mass % to less than 100 mass %.4. A composition comprising 5 mass % to less than 100 mass % of the silanol compound according to .5. The composition according to claim 1 , wherein the amount of water is 25 mass % or less.6. The composition according to claim 1 , comprising more than 0 mass % and less than 95 mass % of at least one compound selected from the group consisting of an amine compound and an amide compound.7. The composition according to claim 6 , wherein the amide compound is tetramethylurea.8. The composition according to claim 1 , comprising an ammonium salt claim 1 , wherein a ratio of the ammonium salt to the silanol compound represented by the Formulas (A) to (C) [(total substance amount of the ammonium salt)/(total substance amount of the silanol compound)] is greater than 0 and equal to or less than 4.9. The composition according to claim 1 , which is a solid body.10. A method for producing a silanol compound claim 1 , comprising a hydrogenation step of conducting a reaction of a compound represented by the ...

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Номер записи: 70
27-06-2019 дата публикации

METHOD FOR PRODUCING EXHAUST GAS PURIFYING CATALYST AND EXHAUST GAS PURIFYING CATALYST

Номер: US20190193065A1
Автор: MIURA Masahide, SHIRAKAWA Shogo
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

The present disclosure provides a method for producing an exhaust gas purifying catalyst, in which fine Rh—Pd particles exhibiting high catalytic activity are produced such that a variation in the Pd composition can be reduced. The present disclosure relates to a method for producing an exhaust gas purifying catalyst having fine composite metal particles containing Rh and Pd, comprising: preparing a starting material solution containing Rh and Pd, in which the atomic percentage of Pd to the total of Rh and Pd is 1 atomic % to 15 atomic %; and allowing the prepared starting material solution to react with a neutralizer by a super agitation reactor having a rotation number of 500 rpm or more, to generate fine composite metal particles. 1. A method for producing an exhaust gas purifying catalyst having fine composite metal particles containing Rh and Pd , comprising:preparing a starting material solution containing Rh and Pd, in which an atomic percentage of Pd to a total of Rh and Pd (=(number of Pd atoms/(total number of Rh and Pd atoms))×100) is 1 atomic % to 15 atomic %; andallowing the prepared starting material solution to react with a neutralizer by a super agitation reactor having a rotation number of 500 rpm or more, to generate fine composite metal particles.2. The method according to claim 1 , wherein the atomic percentage of Pd to the total of Rh and Pd is 2 atomic % to 5 atomic %.3. The method according to claim 1 , wherein the rotation number of the super agitation reactor is 1000 rpm or more.4. The method according to claim 2 , wherein the rotation number of the super agitation reactor is 1000 rpm or more.5. The method according to claim 1 , wherein the neutralizer is an organic base.6. The method according to claim 2 , wherein the neutralizer is an organic base.7. The method according to claim 3 , wherein the neutralizer is an organic base.8. The method according to claim 1 , wherein the starting material solution is a mixed solution of an Rh nitrate ...

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Номер записи: 71
27-06-2019 дата публикации

HONEYCOMB STRUCTURE, HONEYCOMB STRUCTURE TYPE CATALYST AND PRODUCTION METHODS THEREFOR

Номер: US20190193067A1
Автор: Ishikawa Shingo, Sekiyama Kazuhiro, Takahashi Yoshinori, Yamada Takashi
Принадлежит: N.E. CHEMCAT CORPORATION

A honeycomb structure prevents catalyst slurry from leaching out when applying a wash coat for making a catalyst supported, ensuring air permeability of the outer portion and in which there is no occurrence of cracking when used as a gasoline particulate filter. The honeycomb structure having: a honeycomb substrate composed of porous partition walls forming a plurality of cells and a porous outer portion; and a resin composition on the outer portion of the honeycomb substrate, wherein the outer portion and the partition walls of the honeycomb substrate are formed of the same material; a porosity of the honeycomb structure is 50% or more; and the resin composition is impregnated into pores of the whole outer portion; and the impregnation depth is equal to the outer portion thickness or a part of the resin composition is impregnated deeper than the outer portion and reaches the cell partition walls. 1. A honeycomb structure for producing a catalyst , the honeycomb structure having: a honeycomb substrate composed of porous partition walls forming a plurality of cells and a porous outer portion; and a resin composition on the outer portion of the honeycomb substrate , whereinthe outer portion and the partition walls of the honeycomb substrate are formed of the same material; a porosity of the honeycomb substrate is 50% or more; and the resin composition is impregnated into pores of the whole outer portion; and the impregnation depth is equal to the outer portion thickness, or at least a part of the resin composition is impregnated deeper than the outer portion and reaches the cell partition walls.2. The honeycomb structure according to claim 1 , whereinthe resin composition includes one or more organic resin components selected from polyvinyl alcohol (PVA), acrylic resin, acrylic silicone resin, acrylic styrene resin, vinyl acetate resin, polyurethane resin, polyethylene glycol (PEG), agar, gelatin, starch, sucrose, and wax.3. The honeycomb structure according to claim ...

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Номер записи: 72
06-08-2015 дата публикации

CATALYTICALLY EFFECTIVE COMPOSITION HAVING A LARGE CO SURFACE AREA

Номер: US20150217286A1
Автор: BONIFER Marcus, Kemmer Martina, Wille Ansgar
Принадлежит:

The present invention relates to a method for producing a catalytically effective composition for catalysts, to the compositions obtained in the method, and to catalysts containing the composition. 1. A method for producing a catalytically effective composition for catalysts , comprising:a) providing a first oxidic substrate material;b) providing a noble metal salt solution containing one or more noble metal salts, wherein a concentration of noble metal in the solution is 0.01 wt. % or less, relative to the total solution being 100 wt. %;c) producing a suspension by contacting the first oxidic substrate material with the noble metal salt solution; andd) introducing a second oxidic substrate material into the suspension obtained in step c).2. The method according to claim 1 , wherein the first and the second oxidic substrate materials may be the same or different from each other.3. The method according to claim 1 , wherein at least one of the first and the second oxidic substrate materials is selected from the group consisting of aluminum oxide claim 1 , cerium-zirconium oxide claim 1 , barium oxide claim 1 , tin oxide claim 1 , and titanium oxide.4. The method according to claim 1 , wherein a total amount of noble metal is in a range of 0.01 to 10 wt. % claim 1 , relative to the total amount of first oxidic substrate material and noble metal being 100 wt. %.5. The method according to claim 1 , wherein the one or more noble metal salts is a salt of a platinum group metal.6. The method according to claim 1 , wherein the one or more noble metal salts is a nitrate salt.7. The method according to claim 1 , wherein a pH value of the suspension is set to a range of 4 to 10.8. The method according to claim 7 , wherein the pH value is set to a range of 4 to 7.9. The method according to claim 1 , wherein a pH value of the suspension is set using at least one of ammonia and an aqueous sodium carbonate solution.10. The method according to claim 9 , wherein the pH value is set ...

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Номер записи: 73
27-07-2017 дата публикации

METHOD FOR PRODUCING CORE-SHELL CATALYST

Номер: US20170209850A1
Автор: HONMA Nobuo, KITAO Noriyuki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

To produce a core-shell catalyst with high catalytic activity for a short period of time. Disclosed is a method for producing a core-shell catalyst comprising a core containing palladium and a shell containing platinum and coating the core, the method comprising: supplying palladium-containing particles and a copper-containing material to an acid solution; stirring the acid solution with introducing an oxygen-containing gas into the acid solution; coating at least a part of a surface of the palladium-containing particles with copper by applying a potential that is nobler than the oxidation reduction potential of copper to the palladium-containing particles in a copper ion-containing electrolyte after the stirring; and then forming the shell by substituting the copper coating at least a part of the surface of the palladium-containing particles with platinum by bringing the palladium-containing particles into contact with a platinum ion-containing solution. 1. A method for producing a core-shell catalyst comprising a core containing palladium and a shell containing platinum and coating the core ,the method comprising:a supplying step of supplying palladium-containing particles and a copper-containing material to an acid solution;a stirring step of stirring the acid solution with introducing an oxygen-containing gas into the acid solution;a copper coating step of coating at least a part of a surface of the palladium-containing particles with copper by applying a potential that is nobler than the oxidation reduction potential of copper to the palladium-containing particles in a copper ion-containing electrolyte after the stirring step; anda substitution step of forming the shell by substituting the copper coating at least a part of the surface of the palladium-containing particles with platinum by bringing the palladium-containing particles into contact with a platinum ion-containing solution after the copper coating step.2. The method for producing the core-shell ...

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Номер записи: 74
03-08-2017 дата публикации

Method for Preparing Noble Metal Catalyst

Номер: US20170216820A1
Автор: CHEN YAOQIANG, CHENG Yongxiang, LI Dacheng, Li Yun, Wang Qin, Wang Yun
Принадлежит:

The present invention discloses a method for preparing a catalyst, comprising the following steps: (1) taking a noble metal salt solution A, adding a modified alumina support material, stirring until uniform and standing; (2) drying the material obtained in step (1) in a vacuum, and calcining at 500° C.-600° C. for 1-4 hours to obtain a powder material containing the noble metal; (3) mixing the noble metal powder material, an adhesive and other components to be added, and ball-milling to obtain a uniform slurry; (4) preparing a noble metal solution B and adjusting pH to 0.5-1; and (5) mixing the slurry of the step (3) with the noble metal solution B, coating the mixture on a support, drying, and calcining at 500° C.-600° C. for 1-2 hours to obtain the target product. The method for preparing the catalyst of the present invention is simple, the conditions of the preparation process are easy to control and the preparation method has strong practicality. The prepared catalyst has a good quality, a low ignition temperature and a high catalytic conversion rate for methane at a relatively low temperature. 1. A method for preparing a catalyst , comprising the following steps:(1) taking a noble metal salt solution A, adding a modified alumina support material, stirring until uniform and standing;(2) drying the material obtained in step (1) in a vacuum, and calcining at 500° C.-600° C. for 1-4 hours to obtain a powder material containing the noble metal;(3) mixing the powder material containing the noble metal prepared in step (2) with an adhesive and performing ball-milling, to obtain a uniform slurry;(4) preparing a noble metal solution B and adjusting pH to 0.5-1; and(5) mixing the slurry obtained in step (3) with the noble metal salt solution B, coating the mixture on a support, drying, and calcining at 500° C.-600° C. for 1-4 hours to obtain a target product; wherein the noble metal in the noble metal salt solution A and the noble metal salt solution B is one or more of ...

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Номер записи: 75
11-07-2019 дата публикации

METHOD OF HYDROGENATION

Номер: US20190210951A1
Автор: "Trejo OReilly Jose Antonio", SCHULTZ Alfred K
Принадлежит:

Provided is a method of hydrogenation comprising forming a reaction mixture comprising 1. A method of hydrogenation comprising forming a reaction mixture comprising(a) one or more reactant selected from the group consisting of phenol, one or more derivatives of phenol, and mixtures thereof;(b) hydrogen; and(c) catalyst, wherein the catalyst comprises beads that comprise one or more acid-functional organic resin and one or more metal selected from the group consisting of palladium, platinum, silver, gold, rhodium, ruthenium, copper, iridium, and mixtures thereof.2. The method of claim 1 , wherein the acid-functional organic resin comprises carboxylic acid groups.3. The method of claim 1 , wherein the acid-functional organic resin comprises acrylic polymer.4. The method of claim 1 , wherein the metal comprises palladium.5. The method of claim 1 , wherein the reactant is phenol.6. The method of claim 1 , wherein the hydrogenation produces one or more products that comprise cyclohexanone or a derivative thereof.7. The method of claim 1 , wherein the method is conducted at temperature less than 200° C. A hydrogenation reaction that is often desired is the conversion of phenol or a derivative of phenol to cyclohexanone or to a derivative of cyclohexanone. Such hydrogenations are sometimes performed by bringing phenol or a derivative of phenol into contact with a catalyst. WO 2015163221 describes a hydrogenation process involving contact between phenol and a catalyst, and the catalyst described by WO 2015163221 contains metal and has a carrier such as silica, alumina, silica-alumina, zirconia, zeolites, or activated carbon.It is desired to provide a method of hydrogenation that uses a metal-containing catalyst that has a carrier that is an organic resin. It is contemplated that such a catalyst would have one or more of the following advantages: capability of performing catalysis at relatively low temperature; good resistance to leaching out of metal loaded onto the ...

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Номер записи: 76
18-08-2016 дата публикации

EXHAUST SYSTEM FOR A COMPRESSION IGNITION ENGINE HAVING A CAPTURE REGION FOR VOLATILISED PLATINUM

Номер: US20160236179A1
Автор: CHIFFEY ANDREW FRANCIS, DALY Christopher, HATCHER Daniel, LEELAND James, Moreau François, PHILLIPS PAUL RICHARD
Принадлежит:

An oxidation catalyst for treating an exhaust gas produced by a compression ignition engine comprising: a substrate; a catalytic material disposed on the substrate, wherein the catalytic material comprises platinum (Pt); and a region comprising a capture material, wherein the region is arranged to contact the exhaust gas after the exhaust gas has contacted and/or passed through the catalytic material. 1. An oxidation catalyst for treating an exhaust gas produced by a compression ignition engine comprising:a substrate;a catalytic material disposed on the substrate, wherein the catalytic material comprises platinum (Pt); anda region comprising a capture material,wherein the region is arranged to contact the exhaust gas after the exhaust gas has contacted and/or passed through the catalytic material.2. An oxidation catalyst according to claim 1 , wherein the capture material comprises particles of a Pt-alloying metal having a mean particle size ≧about 10 nm.3. An oxidation catalyst according to claim 1 , wherein the capture material comprises particles of a Pt-alloying metal having a dispersion of ≦about 10%.4. An oxidation catalyst according to claim 2 , wherein the Pt-alloying material comprises a metal and/or an oxide thereof claim 2 , wherein the metal is selected from the group consisting of palladium (Pd); gold (Au); copper (Cu); a mixture of Pd and Au; a mixture of Pd and Cu; a mixture of Au and Cu; a mixture of Pd claim 2 , Au and Cu; a bimetallic alloy of Pd and Au; a bimetallic alloy of Pd and Cu; a bimetallic alloy of Au and Cu; and a trimetallic alloy of Pd claim 2 , Au and Cu.5. An oxidation catalyst according to claim 4 , wherein the metal is selected from the group consisting of palladium (Pd) claim 4 , a mixture of Pd and Au claim 4 , and a bimetallic alloy of Pd and Au.6. An oxidation catalyst according to claim 1 , wherein the capture material comprises particles of a refractory oxide having a mean specific surface area ≦about 50 m/g.7. An oxidation ...

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Номер записи: 77
26-08-2021 дата публикации

NOVEL TWC CATALYSTS FOR GASOLINE ENGINE EXHAUST GAS TREATMENTS

Номер: US20210262371A1
Автор: Chen Hai-Ying, JI Hongyu, QIAO Dongsheng, TYO Eric, Yamada Takashi, ZHENG Xiang
Принадлежит:

A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a first oxygen storage capacity (OSC) material, wherein the first OSC material has a fresh specific surface area (SSA) of at least 10 m/g; and wherein the first OSC material has an SSA difference of no more than 30 m/g between the fresh first OSC material and the aged first OSC material. 1. A catalyst composition comprising a platinum group metal (PGM) component and an oxygen storage capacity (OSC) material , wherein the OSC material has a fresh specific surface area (SSA) of at least 10 m/g; and wherein the OSC material has an SSA difference of no more than 30 m/g between the fresh OSC material and the aged OSC material.2. The catalyst composition of claim 1 , wherein the OSC material has a fresh SSA of at least 20 m/g.3. The catalyst composition of claim 1 , wherein the OSC material has a fresh SSA of no more than 55 m/g.4. The catalyst composition of claim 1 , wherein the OSC material when aged claim 1 , has an SSA of at least 10 m/g.5. The catalyst composition of claim 1 , wherein the PGM component is selected from the group consisting of platinum claim 1 , palladium claim 1 , rhodium claim 1 , and a mixture thereof.6. The catalyst composition of claim 1 , wherein the aged OSC material is aged at 1100° C. for 4 hours.7. The catalyst composition of claim 1 , wherein the aged OSC material is aged under hydrothermal redox condition at 1000° C. for 4 hours.8. The catalyst composition of is a three-way catalyst (TWC).9. A catalytic article for treating exhaust gas comprising:a substrate comprising an inlet end and an outlet end with an axial length L;{'sup': 2', '2, 'a first catalytic region comprising a first platinum group metal (PGM) ...

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Номер записи: 78
09-09-2021 дата публикации

METHOD AND APPARATUS FOR DEHYDROGENATING A HYDROGEN CARRIER MEDIUM

Номер: US20210276862A1
Автор: Bösmann Andreas, GEBURTIG Denise, Preuster Patrick, Wasserscheid Peter
Принадлежит:

A method for dehydrogenating a hydrogen carrier medium comprises the method steps of providing a metal-containing catalyst material, an at least partially loaded hydrogen carrier medium, a metal-free reaction accelerator substance, transferring hydrogen from the hydrogen carrier medium to the reaction accelerator substance and releasing hydrogen gas from the reaction accelerator substance. 1. A method for dehydrogenating a hydrogen carrier medium , the method comprising the method steps of: a metal-containing catalyst material;', 'an at least partially loaded hydrogen carrier medium, and', 'a metal-free reaction accelerator substance;, 'providingtransferring hydrogen from the hydrogen carrier medium to the reaction accelerator substance; andreleasing hydrogen gas from the reaction accelerator substance.2. The method as claimed in claim 1 , further comprising providing a reaction pressure of from 0.001 bar to 50 bar.3. The method as claimed in claim 1 , further comprising providing a reaction temperature of from 25° C. to 400° C.4. The method as claimed in claim 1 , wherein the releasing of hydrogen gas is with a release rate of at least 10 standard liters of hydrogen per liter of catalyst volume and per minute at a reaction temperature of less than 250° C.5. The method as claimed in claim 1 , wherein the reaction accelerator substance has at least one functional group which contains at least one of oxygen and nitrogen.11. The method as claimed in claim 1 , wherein the reaction accelerator substance has a vapor pressure (p) which is greater than the vapor pressure (p) of the hydrogen carrier medium claim 1 , wherein p>1.5 p.12. The method as claimed in claim 1 , wherein the reaction accelerator substance has a vapor pressure (p) which is lower than the vapor pressure (p) of the hydrogen carrier medium claim 1 , wherein p<0.8 p.13. The method as claimed in claim 1 , wherein the reaction accelerator substance has a miscibility gap with the hydrogen carrier medium at a ...

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Номер записи: 79
31-08-2017 дата публикации

Catalyst For Direct Nox Decomposition And A Method Of Forming And Using The Catalyst

Номер: US20170246616A1
Автор: Gunugunuri Krishna Reddy, Jia Hongfei, Ling Chen, Peck Torin C.
Принадлежит:

A process of forming a direct NOx catalyst includes the steps of providing a palladium salt, providing a silicon oxide support material, mixing the palladium salt and silicon oxide support material in an aqueous solution, evaporating the aqueous solution forming a solid, calcining the solid, and then exposing the calcined solid to a pretreatment gas at a specified temperature to form a desired direct NOx catalyst. When the process includes exposing the calcined solid to helium gas at a temperature of from 650 to 1000° C. the catalyst may include a mixture of palladium and palladium oxide having a particle size of from 5 to 150 nm where the palladium particles are discrete particles without sintering and the mixture may include 41% by weight palladium oxide and 51% by weight palladium metal. 1. A process of forming a direct NOx catalyst comprising the steps of:providing a palladium salt;providing a silicon oxide support material;mixing the palladium salt and silicon oxide support material in an aqueous solution;evaporating the aqueous solution forming a solid;calcining the solid;treating the calcined solid to helium gas at a temperature of from 650-1000° C. forming the direct NOx catalyst.2. The process of wherein the palladium salt is selected from the group consisting of: nitrates claim 1 , chlorides and acetates.3. The process of wherein the step of calcining includes exposing the solid to a temperature of from 450° C. to 650° C. for a time period of from 3 to 10 hours.4. The process of wherein the formed direct NOx catalyst includes a mixture of palladium and palladium oxide having a particle size of from 5-150 nm wherein the palladium particles are discrete particles without sintering.5. The process of wherein the formed direct NOx catalyst includes 41% by weight palladium oxide and 51% by weight palladium metal.6. The process of wherein the formed direct NOx catalyst has a NOx conversion of from 20 to 40% at a temperature of from 300 to 500° C.7. A process of ...

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Номер записи: 80
06-09-2018 дата публикации

EXHAUST TREATMENT CATALYSTS WITH ENHANCED HYDROTHERMAL STABILITY AND LOW-TEMPERATURE ACTIVITY

Номер: US20180250659A1
Автор: CHOI Jae-Soon, KYRIAKIDOU Eleni, Lance Michael J., PARKS II James E., Toops Todd J.
Принадлежит:

A catalyst for treating fuel combustion exhaust, the catalyst comprising the following components: (i) an oxide support comprising silicon oxide, aluminum oxide, or combination of silicon and aluminum oxides; (ii) cerium oxide, zirconium oxide, or a combination of cerium and zirconium oxides in contact with said oxide support; and (iii) nanoparticles comprising elemental palladium or platinum in contact with at least component (ii), wherein said palladium or platinum is present in an amount of 0.1-4 wt. % by weight of the particles, and wherein surfaces of said nanoparticles of elemental palladium or palladium are exposed and accessible to said fuel combustion exhaust. Methods of producing and using the catalyst are also described. 1. A catalyst for treating fuel combustion exhaust , the catalyst comprising the following components:(i) an oxide support comprising silicon oxide, aluminum oxide, or a combination of silicon and aluminum oxides;(ii) cerium oxide, zirconium oxide, or a combination of cerium and zirconium oxides in contact with said oxide support; and(iii) nanoparticles comprising elemental palladium or platinum in contact with at least component (ii), wherein said palladium or platinum is present in an amount of 0.1-4 wt. % by weight of the particles, and wherein surfaces of said nanoparticles of elemental palladium or palladium are exposed and accessible to said fuel combustion exhaust.2. The catalyst of claim 1 , wherein said catalyst comprises:(i) an oxide inner core comprising silicon oxide, aluminum oxide, or combination of silicon and aluminum oxides;(ii) an outer layer comprising nanoparticles of zirconium oxide or cerium oxide or combination of zirconium and cerium oxides as a coating on said oxide inner core; and(iii) nanoparticles of elemental palladium or platinum coated on said outer layer, wherein said palladium or platinum is present in an amount of 0.1-4 wt. % by weight of the catalyst.3. The catalyst of claim 2 , wherein said outer layer ...

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Номер записи: 81
30-09-2021 дата публикации

EXHAUST GAS PURIFICATION CATALYST

Номер: US20210301706A1
Автор: Chinzei Isao, HOSHINO Sho, Ito Minoru, KIDO Yuki, MIURA Masahide, Nakayama Shin, NISHIO Takahiro, SHIRAKAWA Shogo, SUZUKI Hiromasa
Принадлежит:

Provided is an exhaust gas purification catalyst capable of reducing a noble metal amount while maintaining a catalyst performance, which comprises a substrate and at least three catalyst coating layers formed on the substrate, the first and third catalyst coating layers contain Pd as a catalyst metal and are formed in a range of a predetermined length from an upstream end surface in an exhaust gas flow direction, and the second catalyst coating layer contains Rh as a catalyst metal and is formed in a range of a predetermined length from a downstream end surface in the exhaust gas flow direction. 1. An exhaust gas purification catalyst comprising:a substrate; anda catalyst coating layer formed on the substrate,wherein the catalyst coating layer comprises at least a first catalyst coating layer, a second catalyst coating layer, and a third catalyst coating layer, the first catalyst coating layer is formed on the substrate, the second catalyst coating layer is formed on the first catalyst coating layer, and the third catalyst coating layer is formed on the second catalyst coating layer,wherein the first catalyst coating layer contains Pd as a catalyst metal, and is formed in a range of a length of 15% or more to 60% or less of an entire length of the substrate from an upstream end surface in an exhaust gas flow direction,wherein the second catalyst coating layer contains Rh as a catalyst metal, and is formed in a range of a length of 60% or more to 100% or less of the entire length of the substrate from a downstream end surface in the exhaust gas flow direction, andwherein the third catalyst coating layer contains Pd as a catalyst metal, and is formed in a range of a length of 15% or more to 100% or less of the entire length of the substrate from the upstream end surface in the exhaust gas flow direction.2. The exhaust gas purification catalyst according to claim 1 , wherein Rh in the second catalyst coating layer is Rh fine particles having an average particle size ...

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Номер записи: 82
15-08-2019 дата публикации

PROCESS FOR THE SELECTIVE HYDROGENATION OF VEGETABLE OILS USING EGG-SHELL TYPE CATALYSTS

Номер: US20190249113A1
Автор: BORSOTTI Giampietro, DIGIOIA Francessa
Принадлежит:

The invention relates to a process for the hydrogenation of vegetable oils that selectively converts polyunsaturated fatty acids into mono-unsaturated fatty acids, and to the products obtained therefrom. Vegetable oils obtained by the process according to the invention have a particularly high content of monounsaturated fatty acids and are suitable for use as raw materials for the synthesis of chemical intermediates. 1. A process for the catalytic hydrogenation of vegetable oils in which the oil is placed in contact with molecular hydrogen in the presence of a supported metal catalyst , characterised in that the said catalyst is of the egg-shell type and that the process is carried out at a temperature of less than or equal to 50° C.2. The process according to in which the said metal catalyst is selected from the group comprising nickel claim 1 , platinum claim 1 , palladium claim 1 , copper claim 1 , iron claim 1 , rhodium claim 1 , ruthenium claim 1 , molybdenum claim 1 , osmium claim 1 , iridium claim 1 , tungsten and mixtures thereof.3. The process according to claim 2 , in which the metal catalyst comprises metallic palladium.4. The process according to claim 3 , in which the hydrogenation is carried out in the presence of 20 mg/kg-500 mg/kg of metallic palladium with respect to the quantity of vegetable oil.5. The process according to claim 3 , in which the metal catalyst comprises 0.1-10% by weight of palladium metal.6. The process according to claim 1 , in which the support for the metal catalyst is selected from the group comprising alumina claim 1 , carbon claim 1 , mixed oxides such as CeO claim 1 , ZrO claim 1 , CrO claim 1 , TiO claim 1 , MgO claim 1 , silica claim 1 , inorganic-organic sol-gel matrices claim 1 , polycrystalline oxide substrates claim 1 , amorphous carbon claim 1 , zeolites claim 1 , aluminosilicates claim 1 , alkaline earth carbonates such as magnesium carbonate claim 1 , calcium carbonate or barium carbonate claim 1 , barium sulphate ...

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Номер записи: 83
06-08-2020 дата публикации

AMMONIA PRODUCTION CATALYST AND AFTER TREATMENT SYSTEM

Номер: US20200248606A1
Автор: JOO Nahm Roh, Jung Changho, Kim Chang Hwan
Принадлежит:

An after treatment system is disclosed. The after treatment system may include an exhaust pipe through which an exhaust gas flows; a three-way catalyst (TWC) mounted on the exhaust pipe and purifying HC, CO, and NOx contained in the exhaust gas, an ammonia production catalyst (APC) mounted on the exhaust pipe at a downstream of the TWC, storing NOx at a lean air/fuel ratio, and generating H, releasing the stored NOx, and generating NHusing the released NOx and the generated Hat a rich air/fuel ratio, and a selective catalytic reduction (SCR) catalyst mounted on the exhaust pipe at a downstream of the APC, storing the NHgenerated in the TWC and the APC, and reducing the NOx contained in the exhaust gas using the stored NH. 1. An ammonia production catalyst (APC) comprising 0.4-0.9 wt % of Pt , 0.057-0.3 wt % of Pd , 0.03-0.1 wt % of Rh , 5.0-15.0 wt % of Ba , 10-30 wt % of CeO , 48.7-84.513 wt % of a composite of MgO and AlO , and 0-5 wt % of an additive based on a total weight of the APC.2. The APC of claim 1 , wherein the additive comprises at least one of La claim 1 , Zr claim 1 , Mg claim 1 , and Pr.3. The APC of claim 1 , wherein the composite of MgO and AlOincludes 15-25 wt % of MgO based on a total weight of the composite of MgO and AlO.4. The APC of claim 1 , wherein a weight ratio of Pt to Pd is 3:1 to 7:1.5. An ammonia production catalyst (APC) comprising 0.4-0.9 wt % of Pt claim 1 , 0.057-0.3 wt % of Pd claim 1 , 0.03-0.1 wt % of Rh claim 1 , 5.0-15.0 wt % of Ba claim 1 , 10-25 wt % of CeO claim 1 , 48.7-79.513 wt % of a composite of MgO and AlO claim 1 , and 0-10 wt % of an additive based on a total weight of the APC6. The APC of claim 5 , wherein the additive comprises at least one of La claim 5 , Zr claim 5 , Mg claim 5 , and Pr.7. The APC of claim 5 , wherein the composite of MgO and AlOincludes 15-25 wt % of MgO based on a total weight of the composite of MgO and AlO.8. The APC of claim 5 , wherein a weight ratio of Pt to Pd is 3:1 to 7:1.9. An after ...

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Номер записи: 84
21-10-2021 дата публикации

METHANE OXIDATION CATALYST, PROCESS TO PREPARE THE SAME AND METHOD OF USING THE SAME

Номер: US20210322965A1
Автор: SOORHOLTZ Mario, TANEV Peter Tanev
Принадлежит:

The invention provides a process for preparing a methane oxidation catalyst, a methane oxidation catalyst thus prepared and a method of oxidizing methane. 1. A process for preparing a methane oxidation catalyst comprising the following steps:a.) calcining a non-modified zirconia precursor at a temperature in the range of from 675 to 1050° C. to prepare tetragonal zirconia wherein the weight ratio of tetragonal zirconia to monoclinic zirconia, if any is present, is greater than 31:1;b.) impregnating the zirconia obtained from step b.) with a noble metal precursor-comprising impregnation solution;c.) drying the wet noble metal-impregnated zirconia at a temperature of no more than 120° C.; andd.) calcining the dried noble metal-impregnated zirconia at a temperature in the range of from 400 to 650° C. to prepare a methane oxidation catalyst wherein the weight ratio of tetragonal zirconia to monoclinic zirconia of the catalyst is in the range of from 1:1 to 31:1.2. The process of claim 1 , wherein the weight ratio of tetragonal zirconia to monoclinic zirconia of the calcined zirconia precursor in step a.) is in the range of from 35:1 to 1000:1.3. The process of wherein no detectable monoclinic zirconia is present after the calcination of step a.).4. The process of claim 1 , further comprising depositing the noble metal-impregnated zirconia after calcination in step (d) in the form of a layer claim 1 , film or coating on a ceramic or metallic monolith substrate.5. The process of claim 1 , further comprising depositing the zirconia obtained in step (a) in the form of a layer claim 1 , film or coating on a ceramic or metallic monolith substrate and subsequently impregnating and treating the deposited zirconia according to steps (b) to (d).6. The process of claim 1 , wherein the impregnated zirconia obtained in step (d) or the zirconia obtained in step (a) is deposited on the ceramic or metallic monolith by a washcoating step.7. The process of claim 1 , wherein the ...

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Номер записи: 85
22-09-2016 дата публикации

METAL-ORGANIC MATERIALS AND METHOD FOR PREPARATION

Номер: US20160271582A1
Автор: DI-GREGORIO Maria-Chiara, HAMAMI Shira, LAHAV Michal, SHANKAR POOPPANAL Sreejith, VAN DER BOOM Milko E., WEN Qiang
Принадлежит: Yeda Research and Development Co. Ltd.

The present invention provides metal-organic materials, more specifically organometallic polymers, comprising polypyridyl organic ligands such as tetrakis(4-(pyridin-4-ylethynyl)phenyl)methane, tetrakis(4-(2-(pyridin-4-yl)vinyl)phenyl)methane, 1,3,5,7-tetrakis(4-(pyridin-4-ylethynyl)phenyl)adamantane or 1,3,5,7-tetrakis(4-(2-(pyridine-4-yl)vinyl)phenyl) adamantine, and metal ions structurally coordinated with said ligands, and having three-dimensional crystalline micro or sub-micro structure; as well as a method for the preparation thereof. These metal-organic materials are useful as adsorbents in processes for gas adsorption or separation. 2. The metal-organic material according to claim 1 , wherein the metal ion is Ni or Cu and is present as a salt.3. The metal-organic material according to claim 1 , wherein the metal to ligand ratio is 1:2 to 1:10.4. The metal-organic material according to claim 1 , wherein the metal to ligand ratio is 1:2 to 1:4.5. The metal-organic material according to claim 1 , wherein the metal ion is present as a salt of NiBr claim 1 , NiNO claim 1 , or CuNO.6. The metal-organic material according to claim 1 , wherein the material is crystalline.7. The metal-organic material according to claim 6 , wherein the crystalline material is in the shape of an egg claim 6 , barrel claim 6 , or hexagonal prism.8. The metal-organic material according to claim 1 , wherein the material is coated with Au nanoparticles.9. The metal-organic material according to claim 1 , wherein metal ions are Ni and Cu in a ratio of 1:1.10. The metal-organic material according to claim 1 , wherein the metal ions are present as NiBr and NiNOin a 1:1 ratio.12. The metal-organic material according to claim 11 , wherein the metal ion is Ni or Cu and is present as a salt.13. The metal-organic material according to claim 11 , wherein the metal to ligand ratio is 1:2 to 1:10.14. The metal-organic material according to claim 11 , wherein the metal to ligand ratio is 1:2 to 1:4. ...

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Номер записи: 86
21-09-2017 дата публикации

CORE-SHELL TYPE CATALYST AND GAS SENSOR INCLUDING THE CATALYST

Номер: US20170269047A1
Автор: MURATA Naoyoshi, OKAMURA Makoto, SHIBUTA Yukari, SUZUKI Takuya
Принадлежит: FUJI ELECTRIC CO., LTD.

A core-shell structure (a diameter is about 5 nm) is located on an AlOcatalyst support. Platinum (Pt metal) is a core, and a shell that surrounds the core has a solid solution structure (ABO) (where X is a composition that composes A and B, and Y is a composition of oxygen (O)) that is composed of platinum, palladium, and oxygen.

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Номер записи: 87
13-08-2020 дата публикации

ORGANIC COMPOUND AND ORGANIC LIGHT-EMITTING ELEMENT

Номер: US20200255358A1
Автор: Kamatani Jun, Nishide Yosuke, Yamada Naoki
Принадлежит:

An organic compound is represented by formula (1). In the formula (1), Rto Rare each independently selected from the group consisting of a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aryloxy group, a silyl group, and a cyano group. 2. The organic compound according to claim 1 , wherein Rto Rare each independently selected from the group consisting of a hydrogen atom claim 1 , a substituted or unsubstituted alkyl group claim 1 , and a substituted or unsubstituted aryl group.3. The organic compound according to claim 1 , wherein at least one of R claim 1 , R claim 1 , R claim 1 , and Ris selected from the group consisting of a halogen atom claim 1 , a substituted or unsubstituted alkyl group claim 1 , a substituted or unsubstituted alkoxy group claim 1 , a substituted or unsubstituted amino group claim 1 , a substituted or unsubstituted aryl group claim 1 , a substituted or unsubstituted heterocyclic group claim 1 , a substituted or unsubstituted aryloxy group claim 1 , a silyl group claim 1 , and a cyano group.4. The organic compound according to claim 1 , wherein at least one of R claim 1 , R claim 1 , R claim 1 , and Ris selected from the group consisting of a substituted or unsubstituted alkyl group and a substituted or unsubstituted aryl group.5. The organic compound according to claim 1 , wherein at least one selected from R claim 1 , R claim 1 , R claim 1 , and Rue is an aryl group having a substituent.6. The organic compound according to claim 5 , wherein the aryl group has a substituent at an ortho position thereof.7. The organic compound according to claim 1 , wherein at least one selected from R claim 1 , R claim 1 , R claim 1 , and Rue is a substituted or unsubstituted phenyl group.8. An organic light-emitting ...

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Номер записи: 88
29-09-2016 дата публикации

CARRIER FOR EXHAUST GAS PURIFICATION CATALYST, AND EXHAUST GAS PURIFICATION CATALYST

Номер: US20160279606A1
Автор: ABE Akira, HOUSHITO Ohki, Nagao Yuki, Nakahara Yunosuke, Sato Takahiro
Принадлежит:

Provided is a carrier for an exhaust gas purification catalyst containing aluminum borate particles having a peak (pore peak) exhibiting the highest intensity in a void volume diameter range of from 20 nm to 100 nm in a logarithmic differential void volume distribution measured using a mercury intrusion porosimeter, in order to provide a new catalyst support capable of effectively suppressing a decrease in catalytic performance caused by sulfur (S) component contained in the exhaust gas, in the case of supporting Pd as a catalytically active component. 1. A carrier for an exhaust gas purification catalyst , comprising aluminum borate particles having a peak (also referred to as the “pore peak”) exhibiting the highest intensity in a void volume diameter range of from 20 nm to 100 nm in a logarithmic differential void volume distribution measured using a mercury intrusion porosimeter.2. The carrier for an exhaust gas purification catalyst according to claim 1 , wherein a void having a void volume diameter of from 20 nm to 70 nm accounts for 50% or more of voids having a void volume diameter of from 10 nm to 1000 nm.3. The carrier for an exhaust gas purification catalyst according to claim 1 , wherein the aluminum borate particles comprise lanthanum (La).4. The carrier for an exhaust gas purification catalyst according to claim 1 , wherein a mass ratio of a content of aluminum (Al) to a content of boron (B) (mass ratio of Al/B) in the aluminum borate particles is from 6 to 35.5. The carrier for an exhaust gas purification catalyst according to claim 1 , wherein the aluminum borate particles have a crystal structure represented by 10AlO.2BOor 9AlO.2BO.6. The carrier for an exhaust gas purification catalyst according to claim 1 , wherein the aluminum borate particles have a crystal structure represented by 10AlO.2BOor 9AlO.2BOand a crystal structure represented by 2AlO.BO.7. The carrier for an exhaust gas purification catalyst according to claim 1 , wherein the aluminum ...

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Номер записи: 89
29-09-2016 дата публикации

ZONED DIESEL OXIDATION CATALYST

Номер: US20160279610A1
Автор: Adelmann Katja, Hengst Christoph, Jeske Gerald, SCHIFFER Michael, Schuetze Frank-Walter, Symalla Martin
Принадлежит: UMICORE AG & CO. KG

The present invention relates to a zoned diesel oxidation catalyst, wherein the first catalytically active zone and the second catalytically active zone have equal thermal masses, the first catalytically active zone and the second catalytically active zone each contain platinum and palladium as catalytically active constituents, the weight ratio of platinum to palladium in the first catalytically active zone and the second catalytically active zone is the same in each case or is greater in the first catalytically active zone than in the second catalytically active zone, and the total concentration of platinum and palladium in the first catalytically active zone is greater than in the second catalytically active zone. 1. A diesel oxidation catalyst comprising a support body of length L which extends between a first end and a second end , and a catalytically active coating disposed on the support body , composed of a first catalytically active zone and a second catalytically active zone , whereinthe support body is a ceramic or metallic flow-through honeycomb,the first catalytically active zone, proceeding from the first end, extends for a length E of 5% to 95% of the total length L, {'br': None, 'i': 'E+Z≦L,'}, 'the second catalytically active zone, proceeding from the second end, extends for a length Z of 5% to 95% of the total length L,'}the first catalytically active zone and the second catalytically active zone have equal thermal masses,the first catalytically active zone and the second catalytically active zone each contain platinum and palladium as catalytically active constituents,the weight ratio of platinum to palladium in the first catalytically active zone and the second catalytically active zone is the same and is 1:1, andthe total concentration of platinum and palladium in the first catalytically active zone is greater than in the second catalytically active zone.2. The diesel oxidation catalyst as claimed in claim 1 , wherein the length E of the first ...

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Номер записи: 90
20-08-2020 дата публикации

PROCESS FOR PREPARING FUNCTIONALIZED 1,2,4,5-TETRAZINE COMPOUNDS

Номер: US20200262799A1
Автор: DECREAU Richard, Hierso Jean-Cyrille, ROGER Julien, TESTA Christelle
Принадлежит: Universite de Bourgogne

The present invention relates to a process for the synthesis of 3,6 functionalized 1,2,4,5-tetrazine compounds. 4. The process according to claim 1 , wherein the oxidative reagent is selected from the group comprising N-chlorosuccinimide claim 1 , N-bromosuccinimide claim 1 , N-iodosuccinimide claim 1 , N-fluorobenzenesulfonimide and (diacetoxyiodo)benzene.5. The process according to claim 1 , wherein the catalyst is a palladium catalyst.6. The process according to claim 1 , wherein the catalyst is selected from the group comprising palladium(II) catalyst and palladium(0) catalyst.7. The process according to claim 1 , wherein the catalyst is selected from the group comprising palladium acetate claim 1 , tris(dibenzylideneacetone)dipalladium claim 1 , bis(dibenzylideneacetone)palladium claim 1 , allylpalladium(II) chloride dimer and palladium chloride.8. The process according to claim 1 , wherein the process is carried out in presence of a polar solvent.9. The process according to claim 8 , wherein the polar solvent is selected from the group comprising dichloroethane claim 8 , trifluoromethylbenzene claim 8 , nitromethane claim 8 , acetic acid claim 8 , pivalic acid and propionic acid.10. The process according to claim 1 , wherein the amount of oxidative reagent is ranging from 1 equivalent to 12 equivalent of compound (II).11. process according to claim 1 , wherein the amount of catalyst is ranging from 0.1% to 50% claim 1 , more preferably 0.1% to 30% claim 1 , more preferably 0.1% to 20% claim 1 , more preferably 1% to 50% claim 1 , more preferably 5% to 20% claim 1 , more preferably 8% to 15% and more preferably 1% to 15% claim 1 , in mole to compound (II).12. The process according to claim 1 , wherein the process is performed at a temperature ranging from 80° C. to 150° C. claim 1 , preferably from 90° C. to 130° C. claim 1 , more preferably from 100° C. to 120° C. The present invention relates to a process for the synthesis of 3,6 functionalized 1,2,4,5- ...

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Номер записи: 91
23-12-2021 дата публикации

Scalable synthesis of optically active 1-cyclopropylalkyl-1-amines

Номер: US20210395185A1
Автор: Christian Rink, Da DENG, Klaus GROLL, Marion LAUBE, Michael PANGERL, Qing Xiao, Sabrina HOFEDITZ, Zhanquan DU, Zhibin Zhu
Принадлежит: BOEHRINGER INGELHEIM INTERNATIONAL GMBH

The present invention provides a new, scalable synthetic method for the preparation of non-racemic 1-cyclopropyl alkyl-1-amines, e.g. (S)-1-cyclopropyl ethyl-1-amine. The method makes use of inexpensive starting materials (such as cyclopropyl methyl ketone and S-(−)-α-phenylethylamine) and is well suited for a large scale, industrial process.

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Номер записи: 92
13-10-2016 дата публикации

METHOD FOR PRODUCING alpha-FLUOROACRYLIC ACID ESTER

Номер: US20160297740A1
Автор: GOTOU Akihiro, ISHIHARA Sumi, KISHIKAWA Yousuke, KOMATSU Yuzo, KUROKI Yoshichika, OHTSUKA Tatsuya, Yamamoto Akinori, YAMAMOTO Yoshihiro
Принадлежит: DAIKIN INDUSTRIES, LTD.

The object of the present invention is to provide a process for producing α-fluoroacrylic acid ester at a high starting material conversion, high selectivity, and high yield. The present invention provides a process for producing the compound represented by the formula (1) wherein R represents alkyl optionally substituted with one or more fluorine atoms, the process comprising step A of reacting a compound represented by the formula (2) wherein X represents a bromine atom or a chlorine atom with an alcohol represented by the formula (3) wherein the symbol is as defined above, and carbon monoxide in the presence of a transition metal catalyst and a base to thereby obtain the compound represented by the formula (1). 2. The process according to claim 1 , wherein the transition metal catalyst is a palladium catalyst.3. The process according to claim 1 , wherein the base comprises (a) an amine and (b) an inorganic base or an organic metal base.4. The process according to claim 1 , wherein step A is carried out at a temperature ranging from 60 to 120° C.5. The process according to claim 2 , wherein the base comprises (a) an amine and (b) an inorganic base or an organic metal base.6. The process according to claim 2 , wherein step A is carried out at a temperature ranging from 60 to 120° C.7. The process according to claim 3 , wherein step A is carried out at a temperature ranging from 60 to 120° C.8. The process according to claim 5 , wherein step A is carried out at a temperature ranging from 60 to 120° C. The present invention relates to a process for producing α-fluoroacrylic acid ester.α-Fluoroacrylic acid ester is useful, for example, as a synthetic intermediate for medical drugs (e.g., antibiotic drugs), a synthetic intermediate for cladding materials of optical fibers, a synthetic intermediate for painting materials, a synthetic intermediate for semiconductor resist materials, and a monomer for functional polymers. Examples of conventional processes for producing ...

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Номер записи: 93
03-09-2020 дата публикации

CARBON BASED MATERIALS AS SOLID-STATE LIGANDS FOR METAL NANOPARTICLE CATALYSTS

Номер: US20200276573A1
Автор: CASTANO LONDONO Carlos E., GILLILAND Stanley Eugene, GUPTON Bernard Frank, Regalbuto John R., TENGCO John Meynard M.
Принадлежит:

High activity metal nanoparticle catalysts, such as Pd or Pt nanoparticle catalyst, are provided. Adsorption of metal precursors such as Pd or Pt precursors onto carbonbased materials such as graphene followed by solventless (or low-solvent) microwave irradiation at ambient conditions results in the formation of the catalysts in which metal nanoparticles are supported on i) the surface of the carbon based materials and ii) in/on/within defects/holes in the carbon based materials. 1. A method of making a metal catalyst , comprisingi) depositing a metal precursor on a carbon-based material; andii) irradiating carbon-based material comprising deposited metal precursor with radiant energy sufficient to attach metal from the metal precursor to the carbon-based material, thereby forming a metal catalyst.2. The method of claim 1 , wherein the carbon-based material is a graphitic material.3. The method of claim 2 , wherein the graphitic material is a graphene-based material.4. The method of claim 3 , wherein the graphene-based material comprises one or more of GP1-5 claim 3 , graphene oxide (GO) claim 3 , reduced graphene oxide (rGO) claim 3 , graphene nanoplatelets (GN) claim 3 , graphene nanoplatelet aggregates claim 3 , graphene nanotubes claim 3 , monolayer graphene claim 3 , few-layer graphene (FLG) and multilayer graphene (MLG).5. The method of claim 3 , wherein the step of depositing is performed by loading the graphene-based material with the metal precursor via strong electrostatic adsorption (SEA) claim 3 , wherein the loading takes place in an aqueous solution.6. The method of claim 5 , wherein claim 5 , prior to the step of irradiating claim 5 , the method further comprises the steps of:separating graphene-based material loaded with metal precursor from the aqueous solution; anddrying the graphene-based material loaded with metal precursor.7. The method of claim 5 , further comprising claim 5 , prior to the step of loading claim 5 , the steps of determining an ...

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Номер записи: 94
20-10-2016 дата публикации

PROCESS FOR THE SYNTHESIS OF TRIFLUOROETHYLENE

Номер: US20160303543A1
Автор: Marchionni Giuseppe, Millefanti Stefano, Tortelli Vito
Принадлежит:

A catalytic process for the synthesis of trifluoroethylene from chlorotrifluoroethylene which comprises contacting chlorotrifluoroethylene with hydrogen in the presence of a catalyst consisting of palladium or platinum supported on extruded activated carbon. 14-. (canceled)5. A catalyst consisting of palladium or platinum , supported on activated carbon , wherein the activated carbon is extruded activated carbon.6. The catalyst according to claim 5 , wherein the amount of said palladium or said platinum supported on the extruded activated carbon is between 0.05 and 5% by weight.7. The catalyst according to claim 6 , wherein the amount of said palladium or said platinum supported on the extruded activated carbon is between 0.1 and 4% by weight.8. The catalyst according to claim 7 , wherein the amount of said palladium or said platinum supported on the extruded activated carbon is between 0.2 and 3% by weight9. The catalyst according to claim 8 , wherein the amount of said palladium or said platinum supported on the extruded activated carbon is between 0.3 and 2.5% by weight.10. The catalyst according to claim 5 , wherein the extruded activated carbon has a surface area of between 500 and 1500 m/g.11. The catalyst according to claim 5 , wherein the extruded activated carbon is in the form of pellets having a pellet diameter between 0.8 and 130 mm.12. The catalyst according to claim 5 , consisting of the palladium supported on the extruded activated carbon.13. The catalyst according to claim 6 , consisting of the palladium supported on the extruded activated carbon.14. The catalyst according to claim 7 , consisting of the palladium supported on the extruded activated carbon.15. The catalyst according to claim 8 , consisting of the palladium supported on the extruded activated carbon.16. The catalyst according to claim 9 , consisting of the palladium supported on the extruded activated carbon. This application claims priority to European application No. 10168130.2 filed ...

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Номер записи: 95
10-09-2020 дата публикации

PEROVSKITE COMPOUND, METHOD FOR PRODUCING THE PEROVSKITE COMPOUND, CATALYST FOR FUEL CELL INCLUDING THE PEROVSKITE COMPOUND AND METHOD FOR PRODUCING THE CATALYST

Номер: US20200283307A1
Автор: JANG Jong Hyun, JUNG Jae young, KIM Hyoung-Juhn, Kim Jin Young, Kim Pil, Lee Sehyun, LEE So Young, PARK Hee-Young, PARK Hyun Seo, Sohn Yeonsun, YOO Sung Jong
Принадлежит:

Disclosed are a perovskite compound, a method for producing the perovskite compound, a catalyst for a fuel cell including the perovskite compound, and a method for producing the catalyst. The perovskite compound overcomes the low stability of palladium due to its perovskite structural properties. Therefore, the perovskite compound can be used as a catalyst material for a fuel cell. In addition, the use of palladium in the catalyst instead of expensive platinum leads to an improvement in the price competitiveness of fuel cells. The catalyst is highly durable and catalytically active due to its perovskite structure. 1. A perovskite compound represented by Formula 1:{'br': None, 'sub': n', '(1-n)', '3, '[APd][B][X]\u2003\u2003(1)'}wherein A is a metal other than palladium, B is selected from nitrogen, phosphorus,sulfuric acid, boron, carbon, and oxygen, X is identical to or different from A and is a metal other than palladium, and n is a real number satisfying 0≤n<1.2. The perovskite compound according to claim 1 , wherein each of A and X in Formula 1 is independently selected from nickel claim 1 , cobalt claim 1 , copper claim 1 , iron claim 1 , vanadium claim 1 , chromium claim 1 , manganese claim 1 , and zinc.3. The perovskite compound according to claim 1 , wherein n in Formula 1 is a real number satisfying 0.1≤n≤0.5. This application claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2019-0025889 filed on Mar. 6, 2019 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.The present invention relates to a perovskite compound, a method for producing the perovskite compound, a catalyst for a fuel cell including the perovskite compound, and a method for producing the catalyst.With an increasing demand for clean renewable energy sources, considerable research efforts have concentrated on fuel cells that use hydrogen as an energy source to generate only water as a byproduct. ...

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Номер записи: 96
26-10-2017 дата публикации

EXHAUST GAS PURIFICATION DEVICE

Номер: US20170304772A1
Автор: ITO Tsuyoshi, MIYOSHI Naoto, OHASHI Tatsuya, Onoe Ryota, SAKAGAMI Shingo, SATO Akemi, TAKEUCHI Masahiko
Принадлежит: CATALER CORPORATION

The exhaust gas purification device is provided with a wall flow structure substrate that has an entry-side cell, an exit-side cell and a porous partition, first catalyst parts which are formed in small pores having a relatively small pore diameter among internal pores in the partition, and second catalyst parts which are formed in large pores having a relatively large pore diameter among the internal pores in the partition. The first catalyst parts and the second catalyst parts each contain a carrier and at least one type of noble metal from among Pt, Pd and Rh supported on the carrier. The noble metal content in the first catalyst parts is smaller than the noble metal content in the second catalyst parts per 1 liter of substrate volume. 1. An exhaust gas purification device which is disposed in an exhaust pathway of an internal combustion engine and purifies an exhaust gas emitted by the internal combustion engine , the exhaust gas purification device comprising:a wall flow structure substrate that has an entry-side cell in which only an exhaust gas inlet side end is open, an exit-side cell which is adjacent to the entry-side cell and in which only an exhaust gas outlet side end is open, and a porous partition which divides the entry-side cell from the exit-side cell;first catalyst parts which are formed in small pores having a relatively small pore diameter among internal pores in the partition; andsecond catalyst parts which are formed in large pores having a relatively large pore diameter among the internal pores in the partition,whereinthe first catalyst parts and the second catalyst parts each contain a carrier and at least one type of noble metal from among Pt, Pd and Rh supported on the carrier, andthe noble metal content in the first catalyst parts is smaller than the noble metal content in the second catalyst parts per 1 liter of substrate volume, andthe supported quantity of the noble metal per 1 g of carrier in the first catalyst parts is smaller than ...

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Номер записи: 97
03-10-2019 дата публикации

EXHAUST GAS PURIFICATION FILTER

Номер: US20190299139A1
Автор: TANAKA Eriko
Принадлежит: CATALER CORPORATION

An exhaust gas purification filter that suppresses an increase in pressure loss associated with the formation of a catalyst layer and is excellent in PM burning quality. The exhaust gas purification filter includes a base and a catalyst layer provided on the base. The catalyst layer contains a carrier and a metal catalyst. Large pores having a circle equivalent diameter greater than 5 μm occupy, when an area of the catalyst layer is 100% in an electron microscope observation image of a cross section of the catalyst layer, 45% or more of the area. 1. An exhaust gas purification filter arranged in an exhaust path of an internal combustion engine and collecting particulate matter in exhaust gas exhausted from the internal combustion engine , a base; and', 'a catalyst layer provided on the base, wherein', 'the catalyst layer contains a carrier and a metal catalyst, and', 'large pores having a circle equivalent diameter greater than 5 μm occupy, when an area of the catalyst layer is 100% in an electron microscope observation image of a cross section of the catalyst layer, 45% or more of the area., 'the exhaust gas purification filter comprising2. The exhaust gas purification filter according to claim 1 , whereinthe large pores occupy, when an area of whole pores is 100% in the electron microscope observation image of the cross section of the catalyst layer, 60% or more of the area.3. The exhaust gas purification filter according to claim 1 , whereina porosity of the catalyst layer is 70% or more in the electron microscope observation image of the cross section of the catalyst layer.4. The exhaust gas purification filter according to claim 1 , whereinthe catalyst layer has a multiple pore structure with first pores having a pore size of 1 μm or more and less than 10 μm and second pores having a pore size of 0.5 μm or more and less than 1 μm.5. The exhaust gas purification filter according to claim 4 , whereina pore volume of the first pores is four times or more of a pore ...

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Номер записи: 98
01-11-2018 дата публикации

METHOD OF MODIFYING A PEPTIDE

Номер: US20180312537A1
Автор: Glebocka Agnieszka, Li Zhen, Pei Tao, Zhou Andrew
Принадлежит:

Described herein are methods of modifying a peptide with a chemical agent. The peptide may be an amphipathic peptide, such as a melittin-like peptide. The reactants are dissolved in an organic solvent and the reaction is allowed to proceed during sequential additions of a first base and a second base. Reaction in organic solvent with sequential base additions yields greater than 90% modification of both N-terminal and internal primary amine modification. 1. A method of modifying amines of a peptide under non-aqueous conditions with a chemical agent that comprises a reactive moiety , the method comprising:(a) dissolving the peptide and the chemical agent in an organic solvent;(b) adding a first base; and(c) incubating under non-aqueous conditions until at least 90% of the N-terminal amines of the peptide are modified.2. The method of claim 1 , wherein the method further includes:(d) adding a second base after 90% of the N-terminal amines have been modified under non-aqueous conditions.3. The method of claim 2 , wherein part (d) of the method further comprises incubating until at least 90% of the total primary amines of the peptide are modified with the chemical agent under non-aqueous conditions.4. The method of claim 3 , wherein the peptide is an amphipathic peptide.5. The method of claim 3 , wherein the organic solvent is selected from the group consisting of: trifluoroethanol (TFE) claim 3 , hexafluoro-iso-propanol (HFIP) claim 3 , dimethyl sulfoxide (DMSO) claim 3 , mixtures of TFE claim 3 , HFIP claim 3 , and DMSO claim 3 , mixtures of TFE claim 3 , HFIP claim 3 , or DMSO with one or more miscible solvents.6. The method of claim 3 , wherein step (a) further comprises a miscible solvent selected from the group consisting of: alcohol claim 3 , methanol (MeOH) claim 3 , ethanol claim 3 , (EtOH) claim 3 , n-propanol claim 3 , n-butanol claim 3 , ethylene glycol claim 3 , dimethylformamide (DMF) claim 3 , dimethylacetamide (DMAc) claim 3 , N-methyl-2-pyrrolidone (NMP ...

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Номер записи: 99
10-10-2019 дата публикации

ZONED DIESEL OXIDATION CATALYST

Номер: US20190308173A1
Автор: COLE KIERAN JOHN, HANLEY ROBERT, HASHIMOTO YOSHIHITO, KLINK Wassim, LOPEZ-DE JESUS YARITZA M., MARKATOU PENELOPE, NEWMAN COLIN RUSSELL, SHIBATA MASAHITO
Принадлежит:

An oxidation catalyst is described for treating an exhaust gas from a diesel engine, which oxidation catalyst comprises: a substrate; a first washcoat region disposed on the substrate, wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material; a second washcoat region adjacent to the first washcoat region, wherein the second washcoat region comprises a second platinum group metal (PGM) and a second support material; a third washcoat region disposed on the substrate, wherein the third washcoat region comprises a third platinum group metal (PGM) and a third support material; and wherein either: (i) the third washcoat region is adjacent to the second washcoat region; or (ii) the second washcoat region is disposed or supported on the third washcoat region. Also described are uses and methods involving the oxidation catalyst. 1. An oxidation catalyst for treating an exhaust gas from a diesel engine , which oxidation catalyst comprises an upstream washcoat layer , a downstream washcoat layer and a substrate;wherein a first washcoat region comprising a part of the upstream washcoat layer is disposed on the substrate at an inlet end of the substrate, wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material, wherein the only PGM in the first washcoat region is the first PGM, and the first PGM is a combination of platinum and palladium, wherein the first washcoat region has a length of 10 to 50% of the length of the substrate;{'sup': '−3', 'wherein a second washcoat region is adjacent to the first washcoat region and comprises a second platinum group metal (PGM), a second support material, a rear part of the upstream washcoat layer and a front part of the downstream washcoat layer, wherein the second PGM is a combination of platinum and palladium, the second washcoat region has a total loading of the second PGM of 5 to 300 g ft, and wherein either (i) the rear part of the ...

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Номер записи: 100