Of Palladium Patents (Class 502/333)
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Patent number: 8075859Abstract: A nanocomposite particle, its use as a catalyst, and a method of making it are disclosed. The nanocomposite particle comprises titanium dioxide nanoparticles, metal oxide nanoparticles, and a surface stabilizer. The metal oxide nanoparticles are formed hydrothermally in the presence of the titanium dioxide nanoparticles. The nanocomposite particle is an effective catalyst support, particularly for DeNOx catalyst applications.Type: GrantFiled: July 14, 2009Date of Patent: December 13, 2011Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Guoyi Fu, Steven M. Augustine
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Patent number: 8076263Abstract: The present invention is directed to an improved catalyst support and to the resultant catalyst suitable for treating exhaust products from internal combustion engines, especially diesel engines. The support of the present invention is a structure comprising alumina core particulate having high porosity and surface area, wherein the structure has from about 1 to about 40 weight percent silica in the form of cladding on the surface area of said alumina core. The resultant support has a normalized sulfur uptake (NSU) of up to 15 ?g/m2.Type: GrantFiled: September 12, 2007Date of Patent: December 13, 2011Assignee: W. R. Grace & Co.-Conn.Inventors: Manoj Mukund Koranne, James Neil Pryor, David Monroe Chapman, Rasto Brezny
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Patent number: 8071498Abstract: An exhaust gas purifying catalyst wherein the catalytic activity can be recovered over a wide temperature range is provided. Also provided are a method for recovering an exhaust gas purifying catalyst, and a catalyst system for exhaust gas purification. The exhaust gas purifying catalyst is characterized by containing an oxide A containing an oxide (A-1) containing an alkaline earth metal and/or a rare earth metal and an inorganic oxide (A-2), and a noble metal B supported by the oxide A. This exhaust gas purifying catalyst is also characterized in that the weight ratio of the oxide (A-1) containing an alkaline earth metal and/or a rare earth metal to the noble metal B is from 1:10 to 1:500.Type: GrantFiled: April 20, 2007Date of Patent: December 6, 2011Assignee: Cataler CorporationInventors: Norihiko Aono, Yoshinori Yamashita
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Patent number: 8071504Abstract: A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide.Type: GrantFiled: December 19, 2008Date of Patent: December 6, 2011Assignee: Caterpillar Inc.Inventors: Christie Susan Ragle, Ronald G. Silver, Svetlana Mikhailovna Zemskova, Colleen J. Eckstein
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Patent number: 8066963Abstract: The exhaust gas of internal combustion engines operated with a predominantly stoichiometric air/fuel mixture contains, as well as the gaseous hydrocarbon (HC), carbon monoxide (CO) and nitrogen oxide (NOx) pollutants, also ultrafine particulates. There is disclosed a catalytically active particulate filter, an exhaust gas cleaning system and a process for cleaning the exhaust gases of predominantly stoichiometrically operated internal combustion engines, as well as the gaseous CO, HC and NOx pollutants, also for removing particulates from the exhaust gas. The particulate filter comprises a filter body and a catalytically active coating consisting of two layers. Both layers contain alumina. The first layer contains palladium. The second layer contains rhodium. The latter is disposed above the first layer.Type: GrantFiled: September 26, 2008Date of Patent: November 29, 2011Assignee: Umicore AG & Co. KGInventors: Raoul Klingmann, Martin Roesch, Dieter Lindner
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Patent number: 8067334Abstract: A catalyst on an oxidic support and processes for selectively hydrogenating unsaturated compounds in hydrocarbon streams comprising them using these catalysts are described.Type: GrantFiled: October 13, 2005Date of Patent: November 29, 2011Assignee: BASF SEInventors: Thomas Hill, Hermann Petersen, Germain Kons, Henrik Junicke
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Publication number: 20110287928Abstract: The invention provides a catalyst for catalytically removing three components which are carbon monoxide, hydrocarbons and nitrogen oxides from combustion exhaust gas generated by combusting fuel in the neighborhood of the stoichiometric air to fuel ratio by bringing the combustion exhaust gas into contact therewith, the catalyst comprising: (A) a first catalyst component comprising at least one member selected from rhodium, platinum, and palladium in a content of 0.01 to 0.5% by weight; and (B) a second catalyst component, which is the remainder, comprising a composite oxide or a mixed oxide comprising (a) at least one oxide selected from zirconium oxide and titanium oxide, and (b) an oxide of at least one element selected from praseodymium, yttrium, neodymium, tungsten, niobium, silicon, and aluminum, wherein the content of the oxide (a) in the composite oxide or the mixed oxide is in a range of 70 to 95% by weight.Type: ApplicationFiled: March 17, 2011Publication date: November 24, 2011Applicants: HONDA MOTOR CO., LTD.Inventors: Tadao NAKATSUJI, Kazuya INADA, Yuji ISOGAI, Kiyoshi TANAAMI
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Patent number: 8058205Abstract: An NOx purification system having NOx occlusion reduction-type catalysts including an occlusion material and a metal catalyst, which occludes NOx in a lean state in terms of a fuel-air ratio of an exhaust gas and releases the occluded NOx in a rich state. A high-temperature type catalyst is placed on the upstream side, and a low-temperature type catalyst is disposed on the downstream side in series with the high-temperature type catalyst. The molar ratio of platinum to rhodium supported on the high-temperature type catalyst is within a range of 2:1 to 1:2. This NOx purification system is capable of a wide NOx activation temperature window.Type: GrantFiled: November 10, 2005Date of Patent: November 15, 2011Assignee: Isuzu Motors LimitedInventors: Daiji Nagaoka, Masashi Gabe
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Patent number: 8052775Abstract: Process for preparing a two layer metal palladium or palladium alloy composite membrane consisting of a porous substrate support and a palladium or palladium alloy membrane by rinsing/washing and drying the porous substrate support, treating the porous substrate support with a pore filler in order to decorate the pores of the support and the disfigurements of the substrate surface, sensitizing and activating with a palladium solution the decorated substrate support, and plating the resulting support with a palladium solution to form the two layer composite membrane, drying. The resulting composite membrane is subjected to a post-processing where the pore fillers residing in the pore-channels of the porous substrate are partly removed or reduced in volume through heating.Type: GrantFiled: January 7, 2005Date of Patent: November 8, 2011Assignees: BP P.L.C., Dalian Institute of Chemical PhysicsInventors: Shoufu Hou, Kui Jiang, Wenzhao Li, Hengyong Xu, Lixiang Yuan
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Patent number: 8052936Abstract: In a particulate filter, a catalyst layer containing Pt-carried activated alumina particles, CeZr-based mixed oxide particles and ZrNd-based mixed oxide particles is formed, the proportion of the total amount of the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles in the total amount of the Pt-carried activated alumina particles, the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles is 10% to 60% by mass, both inclusive, and the mass ratio of the CeZr-based mixed oxide particles to the ZrNd-based mixed oxide particles is 20/80 to 80/20, both inclusive. This configuration enhances the particulate burning property and the low-temperature exhaust gas conversion efficiency.Type: GrantFiled: July 9, 2008Date of Patent: November 8, 2011Assignee: Mazda Motor CorporationInventors: Koichiro Harada, Kenji Suzuki, Kenji Okamoto, Hiroshi Yamada, Akihide Tamani
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Publication number: 20110268242Abstract: A recombination apparatus is provided to an off-gas system of a boiling water nuclear plant. An off-gas system pipe connected to a condenser is connected to the recombination apparatus. A catalyst layer filled with a catalyst for recombining hydrogen and oxygen is disposed in the recombination apparatus. The recombination catalyst has a percentage of the number of Pt particles whose diameters are in a range from more than 1 nm to not more than 3 nm to the numbers of Pt particles whose diameters are in a range from more than 0 nm to not more than 20 nm, falling within a range from 20 to 100%. The condenser discharges gas containing an organosilicon compound (ex. D5), hydrogen, and oxygen, which is introduced to the recombination apparatus. Use of the above recombination catalyst can improve the performance of recombining hydrogen and oxygen more than conventional catalysts and the initial performance of the catalyst can be maintained for a longer period of time.Type: ApplicationFiled: April 27, 2011Publication date: November 3, 2011Applicants: Nikki-Universal Co., Ltd., Hitachi-GE Nuclear Energy, Ltd.Inventors: Hidehiro IIZUKA, Motohiro AIZAWA, Toru KAWASAKI, Hirofumi MATSUBARA, Takashi NISHI, Shuichi KANNO, Yasuo YOSHII, Yoshinori EBINA, Takanobu SAKURAI, Tsukasa TAMAI, Michihito ARIOKA
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Patent number: 8038954Abstract: An emission treatment system including a catalyzed soot filter comprising a wall flow monolith and a catalyst comprising at least two types of support particles is described. The first support particle contains at least a platinum component, the second support particles contains at least a palladium component. The wall flow monolith may be washcoated with a slurry comprising at least two types of particles without applying a passivation layer to the wall flow monolith.Type: GrantFiled: February 14, 2008Date of Patent: October 18, 2011Assignee: BASF CorporationInventor: Yuejin Li
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Patent number: 8038951Abstract: Provided are catalyst composites comprising: a catalytic material on a carrier, the catalytic material comprising a precious metal selected from a palladium component and an oxygen storage component, the oxygen storage component being present in an amount of at least 10% by weight, wherein substantially all of the oxygen storage component is in intimate contact with the palladium component and the catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. A catalyst composite comprising: a catalytic material on a carrier, the catalytic material comprising a palladium component and a ceria-zirconia composite support, the ceria being present in an amount in the range of 10 to 70% by weight, wherein substantially all of the ceria is in intimate contact with at least a portion of the palladium component. Methods of making and using these catalysts along with systems containing these catalysts are also provided.Type: GrantFiled: January 15, 2008Date of Patent: October 18, 2011Assignee: BASF CorporationInventors: Knut Wassermann, Stephen Siemund, Michel Deeba, Harold Rabinowitz
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Patent number: 8038956Abstract: Catalyzed soot filters comprising a wall flow monolith having microcracks and pores and a catalyst comprising support particles with particle sizes greater than about the size of the microcracks and less than about the size of the pores are disclosed. Methods of manufacturing catalyzed soot filters and diesel engine exhaust emission treatment systems are also disclosed.Type: GrantFiled: December 16, 2008Date of Patent: October 18, 2011Assignee: BASF CORPORATIONInventor: Yuejin Li
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Patent number: 8034311Abstract: An oxidation catalyst that efficiently promotes oxidation of NO to NO2 even in a low temperature range, and an exhaust-gas purification system and method that efficiently removes exhaust-gas components even in a low temperature range are provided. This invention provides an oxidation catalyst comprising platinum and palladium as catalytically active components, which promotes oxidation of nitrogen monoxide to nitrogen dioxide, wherein the oxidation catalyst comprises 1 to 55 parts by weight of the palladium relative to 100 parts by weight of the platinum.Type: GrantFiled: February 17, 2010Date of Patent: October 11, 2011Assignees: ICT Co., Ltd., International Catalyst Technology, Inc.Inventors: Masanori Ikeda, Naohiro Kato
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Publication number: 20110245073Abstract: A catalyst composition comprises a particulate support and catalyst nanoparticles on the particulate support. The catalyst nanoparticles comprise an alloy of platinum and palladium in an atomic ratio of from about 25:75 to about 75:25 and are present in a concentration of between about 3 and about 10 wt % weight percent of the catalyst composition. The catalyst composition has an X-ray diffraction pattern that is substantially free of the (311) diffraction peak assignable to PtxPd1-x, where 0.25?x?0.75.Type: ApplicationFiled: August 6, 2010Publication date: October 6, 2011Applicant: CABOT CORPORATIONInventors: Miodrag OLJACA, Ranko P. BONTCHEV, Paolina ATANASSOVA, Berislav BLIZANAC, Yipeng SUN, Matthew EZENYILIMBA, George FOTOU, Kenneth C. Koehlert
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Patent number: 8030242Abstract: The invention concerns a process for preparing metallic nanoparticles with an anisotropic nature by using two different reducing agents, preferably with different reducing powers, on a source of a metal selected from columns 8, 9 or 10 of the periodic table of the elements.Type: GrantFiled: November 14, 2006Date of Patent: October 4, 2011Assignee: IFP Energies NouvellesInventors: Denis Uzio, Catherine Verdon, Cecile Thomazeau, Bogdan Harbuzaru, Gilles Berhault
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Publication number: 20110237430Abstract: A process for preparing a catalyst comprising palladium supported on a carrier via a layered precursor, comprising the following steps: (1) synthesis of hydrotalcite layered precursor which comprises promoting metal element and aluminium on the surface of the carrier of Al2O3 microspheres, the atoms of the promoting metal and aluminium being highly dispersed by each other and bonded firmly to the carrier due to the crystal lattice positioning effect of the hydrotalcite crystal; (2) introduction of palladium into the carrier through impregnation; (3) drying; and (4) calcination and reduction with H2, the hydrotalcite layered precursor being converted into a composite oxide which consists of oxides of the promoting metal and aluminium, and the promoting metal element and aluminium being highly dispersed by each other and being able to separate and disperse the mainly active palladium element loaded later.Type: ApplicationFiled: June 25, 2009Publication date: September 29, 2011Applicant: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGYInventors: Fazhi Zhang, Peng Chen, Rong Hou, Jiali Chen, Chao Gao, Hui Zhang, Dianqing Li, Feng Li, Xue Duan
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Publication number: 20110237429Abstract: A catalytic metal 5 is supported on oxide particles 4, 6 in a first catalyst layer 2, and first binder particles 7 which are fine, and have oxygen ion conductivity are interposed among the oxide particles. A catalytic metal 11 is supported on oxide particles 8, 9, 12 in a second catalyst layer 3 provided on or above the first catalyst layer 2, and second binder particles 13 which are fine, and are capable of storing and releasing oxygen are interposed among the oxide particles.Type: ApplicationFiled: February 9, 2011Publication date: September 29, 2011Applicant: MAZDA MOTOR CORPORATIONInventors: Masaaki AKAMINE, Masahiko SHIGETSU
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Publication number: 20110229396Abstract: The invention concerns a process for the oxidation of organic compounds contained in a gas stream and comprises the step of introducing the gas stream containing the organic compounds together with sufficient oxygen to effect the desired amount of oxidation into an oxidation reactor containing an oxidation catalyst and maintaining the temperature of said gas stream at a temperature sufficient to effect oxidation, characterised in that the oxidation catalyst contains at least 0.01% by weight of ruthenium, cobalt or manganese.Type: ApplicationFiled: September 17, 2009Publication date: September 22, 2011Applicant: JOHNSON MATTHEY PLCInventors: Gareth Headdock, Kenneth George Griffin, Peter Johnston, Martin John Hayes
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Patent number: 8022010Abstract: Nitrogen oxide storage materials and methods of manufacturing nitrogen oxide storage materials are disclosed. The nitrogen oxide storage materials can be used to manufacture catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated periodically between lean and stoichiometric or rich conditions, for abatement of NOx in an exhaust gas stream which is generated by the engine. In one embodiment, the nitrogen oxide storage material comprises alkaline earth material supported on ceria particles having a crystallite size of between about 10 and 20 nm and the alkaline earth oxide having a crystallite size of between about 20-40 nm.Type: GrantFiled: July 6, 2009Date of Patent: September 20, 2011Assignee: BASF CorporationInventors: Marcus Hilgendorff, Stanley A. Roth, Susanne Stiebels
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Patent number: 8007750Abstract: A layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Methods of making and using the same are also provided. In one or more embodiments, the catalyst comprises three layers of catalytic material in conjunction with a carrier. A first layer comprises a platinum component on a first support; a second layer comprises a rhodium component on a second support; and a third layer comprises a palladium component and a third support. The palladium, rhodium, and/or platinum can independently be deposited on a support of high surface area refractory metal oxide, or of an oxygen storage component, or both.Type: GrantFiled: July 19, 2007Date of Patent: August 30, 2011Assignee: BASF CorporationInventors: Shau-Lin Franklin Chen, Jin Sakakibara, Tian Luo, Harold Rabinowitz
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Patent number: 7998896Abstract: An exhaust gas purifying catalyst having a good ignition performance is provided. The exhaust gas purifying catalyst 1 includes a catalyst substrate 3 and a catalyst coating layer 5 which contains a noble metal and a refractory inorganic oxide and is formed on the catalyst substrate. The exhaust gas purifying catalyst is characterized in that the catalyst coating layer 5 includes an upstream portion 11 located upstream and a downstream portion 13 located downstream in a flow direction of an exhaust gas. The upstream portion 11 has a layered structure including an upstream portion inside layer 17 and an upstream portion outside layer 15. The upstream portion inside layer contains a cerium-zirconium composite oxide in which a relative proportion of CeO2 is 50 to 95 wt %, as the refractory inorganic oxide, and the upstream portion outside layer 15 and the downstream portion 13 contain a cerium-zirconium composite oxide in which a relative proportion of ZrO2 is 50 to 95 wt %, as the refractory inorganic oxide.Type: GrantFiled: July 24, 2006Date of Patent: August 16, 2011Assignee: Cataler CorporationInventors: Ichiro Kitamura, Kenichi Taki, Akimasa Hirai
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Patent number: 7994089Abstract: A method of producing de-alloyed nanoparticles. In an embodiment, the method comprises admixing metal precursors, freeze-drying, annealing, and de-alloying the nanoparticles in situ. Further, in an embodiment de-alloyed nanoparticle formed by the method, wherein the nanoparticle further comprises a core-shell arrangement. The nanoparticle is suitable for electrocatalytic processes and devices.Type: GrantFiled: September 8, 2008Date of Patent: August 9, 2011Assignee: University of Houston SystemInventors: Peter Strasser, Shirlaine Koh, Prasanna Mani, Srivastava Ratndeep
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Publication number: 20110190533Abstract: A method for preparing a palladium-gold catalyst containing a titania extrudate is disclosed. The titania extrudate is produced by using a carboxyalkyl cellulose and a hydroxyalkyl cellulose as extrusion aids. The titania extrudate has improved processibility and/or mechanical properties. After calcination, the extrudate is used as a carrier for the palladium-gold catalyst. The catalyst is useful in producing vinyl acetate by oxidizing ethylene with oxygen in the presence of acetic acid.Type: ApplicationFiled: January 29, 2010Publication date: August 4, 2011Inventor: Daniel Travis Shay
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Patent number: 7985395Abstract: Catalyst for oxidation reactions which comprises at least one constituent active in the catalysis of hydrogen chloride oxidation and support therefor, which support is based on uranium oxide. The catalyst is notable for a high stability and activity.Type: GrantFiled: June 26, 2008Date of Patent: July 26, 2011Assignee: Bayer Technology Services GmbHInventors: Aurel Wolf, Leslaw Mleczko, Oliver Felix-Karl Schlüter, Stephan Schubert
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Patent number: 7985830Abstract: Methods for synthesizing dimeric or polymeric reaction products of nitrogen aromatics comprise contacting a composition comprising the nitrogen aromatic with a catalyst composition. The catalyst comprises a first metal substrate having a second reduced metal coated on the substrate.Type: GrantFiled: December 30, 2009Date of Patent: July 26, 2011Assignee: GM Global Technology Operations LLCInventors: Andrew M. Mance, Tao Xie, Belabbes Merzougui, Charlene A. Hayden
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Patent number: 7981274Abstract: A catalytic element useful for promoting catalytic gas phase reactions is provided, comprising a porous ceramic body comprising a multiplicity of open pores having a coating comprising a basic oxide material and a catalyst material selected from transition metal and noble metal compounds.Type: GrantFiled: July 21, 2008Date of Patent: July 19, 2011Assignee: Pall CorporationInventors: Manfred Nacken, Steffen Heidenreich
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Patent number: 7976804Abstract: A catalyst for the decomposition of N2O under the conditions of the Ostwald process, comprising a carrier and a coating made of rhodium, rhodium/palladium or rhodium oxide applied thereto, ensures to yield NO with a particularly low content of laughing gas as the first process product.Type: GrantFiled: January 9, 2009Date of Patent: July 12, 2011Assignee: W.C. Heraeus GmbHInventors: Uwe Jantsch, Jonathan Lund, Marek Gorywoda, Marcus Kraus
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Patent number: 7977275Abstract: The invention proposes a particulate filter having a catalytic coating which contains two catalysts arranged one behind the other. The first catalyst is located in the gas inlet region of the filter and contains a palladium/platinum catalyst. The second catalyst is arranged downstream of the first catalyst and preferably contains platinum alone as catalytically active component. The combination of these two catalysts provides the coated filter with a good ageing stability and resistance to sulphur poisoning.Type: GrantFiled: August 13, 2005Date of Patent: July 12, 2011Assignee: Umicore AG & Co. KGInventors: Marcus Pfeifer, Markus Koegel, Roger Staab, Pascal Adolph, Yvonne Demel, Tobias Kuhl, Egbert Lox, Thomas Kreuzer, Frank-Walter Schuetze
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Publication number: 20110119990Abstract: The present invention relates to the processing of hydrocarbon-containing feedstreams in the presence of an interstitial metal hydride comprised of at least one chemical element selected from Groups 3-11 (including the lanthanides, atomic numbers 58 to 71), and at least one chemical element selected from Groups 13-15 from the IUPAC Periodic Table of Elements. These interstitial metal hydrides, their catalysts and processes using these interstitial metal hydrides and catalysts of the present invention improve overall hydrogenation, product conversion, as well as sulfur reduction in hydrocarbon feedstreams.Type: ApplicationFiled: November 17, 2010Publication date: May 26, 2011Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANHYInventors: Pallassana S. Venkataraman, Gordon F. Stuntz, Jonathan M. McConnachie, Faiz Pourarian
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Publication number: 20110111952Abstract: An exhaust gas purifying catalyst (1) is composed of: a noble metal (2); a first compound (3); and a second compound (4). The noble metal (2) is supported on the first compound (3). The exhaust gas purifying catalyst (1) includes units having a structure in which the first compound (3) supporting the noble metal (2) is surrounded by the second compound (4), and the first compound (3) supporting the noble metal (2) is isolated from one another by the second compound (4). The noble metal (2) is one or more selected from [Pt, Pd and Rh], the first compound (3) contains Ti as a main component, and the second compound (4) contains, as a main component, one or more selected from [Al and Si].Type: ApplicationFiled: June 4, 2009Publication date: May 12, 2011Inventors: Kazuyuki Shiratori, Masanori Nakamura, Hironori Wakamatsu, Katsuo Suga
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Publication number: 20110105305Abstract: An architecture made of a ceramic or a metallic foam has at least one continuous and/or discontinuous, axial and/or radial porosity gradient ranging from 10 to 90% associated to a pore size range from 2 to 60 ppi, at least one continuous and/or discontinuous, axial and/or radial concentration gradient of catalytic active(s) phase(s) from 0.01 wt % to 100 wt % preferentially from 0.1 wt % to 20 wt %, and a microstructure with a specific area ranging between 0.1 to 30 m2/g, a grain size between 100 nm and 20 microns and a skeleton densification above 95%.Type: ApplicationFiled: June 16, 2009Publication date: May 5, 2011Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Pascal Del-Gallo, Daniel Gary, Thierry Chartier, Mathieu Cornillac, Raphael Faure, Fabrice Rossingnol
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Publication number: 20110105304Abstract: Architecture comprising ceramic or metallic foam, characterized in that the foam has a constant axial and radial porosity between 10 to 90% with a pore size between 2 to 60 ppi, and at least one continuous and/or discontinuous, axial and/or radial concentration of catalytic active(s) phase(s) from 0.01 wt % to 100 wt %, preferentially from 0.1 to 20 wt. %, and in that the architecture has a microstructure comprising specific area ranging between 0.1 to 30 m2/g, a grain size between 100 nm and 20 microns and a skeleton densification above 95%.Type: ApplicationFiled: June 15, 2009Publication date: May 5, 2011Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Ex ploitation Des Procedes Georges ClaudeInventors: Pascal Del-Gallo, Thierry Chartier, Mathieu Cornillac, Raphael Faure, Daniel Gary, Fabrice Rossignol
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Patent number: 7935655Abstract: Catalytic layers for use in the electrodes of fuel cells including a non-noble metal substrate layer coated with one or a few monolayers of noble metal, such as Pt. These thin, highly porous structures with large catalytically active surface areas, should exhibit a significantly higher power output per mg of Pt and per cm2 of the membrane than the current Polymer Electrolyte Fuel Cells catalytic layers.Type: GrantFiled: November 4, 2005Date of Patent: May 3, 2011Assignee: Kent State UniversityInventor: Yuriy Viacheslavovich Tolmachev
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Patent number: 7932205Abstract: The invention relates to a process for the preparation of a catalyst comprising: a) The preparation of a colloidal oxide suspension of a first metal M1 that consists in the neutralization of a basic solution by an acidic mineral solution that contains the precursor of the metal M1, b) Bringing into contact the precursor of the promoter M2, either directly in its crystallized form or after dissolution in aqueous phase, with the colloidal suspension that is obtained in stage a), c) Bringing into contact the colloidal suspension that is obtained in stage b) with the substrate, d) Drying at a temperature of between 30° C. and 200° C., under a flow of air. The invention also relates to a process for the treatment of an olefinic fraction that uses the catalyst prepared [by] said preparation process.Type: GrantFiled: December 14, 2006Date of Patent: April 26, 2011Assignee: IFPInventors: Vincent Coupard, Denis Uzio, Carine Petit-Clair, Lars Fischer, Frederic Portejoie
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Patent number: 7923408Abstract: Diesel particulate filter that can lower the particulate matter (PM) combustion start temperature and use material containing silicon (Si) for a carrier. The carrier, which has a filter function, is allowed to support a perovskite-type complex oxide expressed by formula (1) as follows, wherein 0<x<0.7 and 0?y?1: formula (1)=La1-xBaxMnyFe1-yO3.Type: GrantFiled: February 20, 2007Date of Patent: April 12, 2011Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Dowa Electronics Materials Co., Ltd.Inventors: Masashi Takahashi, Hiroshi Tanada, Takuya Yano
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Patent number: 7923409Abstract: A catalyst that can be used for the production of hydrogen from hydrocarbon fuels in steam reforming processes contains an active metal of, e.g., at least one of Ir, Pt and Pd, on a catalyst support of, e.g., at least one of monoclinic zirconia and an alkaline-earth metal hexaaluminate. The catalyst exhibits improved activity, stability in both air and reducing atmospheres, and sulfur tolerance.Type: GrantFiled: October 18, 2007Date of Patent: April 12, 2011Assignees: SUD-Chemie Inc., L'Air Liquide Societe Anonyme Pour l'Etude et l'Exploitations des Procedes Georges ClaudeInventors: Franklin D. Lomax, Jr., John Lettow, Aaron L. Wagner, Jon P. Wagner, Duane Myers
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Patent number: 7923407Abstract: It is an object of the present invention to provide a catalyst for the exhaust gas purification having excellent ignition performance and NOx purification performance. The present invention provides a catalyst for the exhaust gas purification which comprises a catalytically active component (I) having palladium and barium supported on a refractory inorganic oxide (A); and a catalytically active component (II) having at least either of rhodium and platinum on a refractory inorganic oxide (B), a method for the production thereof, and a method for purifying an exhaust gas using such a catalyst.Type: GrantFiled: March 14, 2007Date of Patent: April 12, 2011Assignees: ICT Co., Ltd., International Catalyst Technology, Inc.Inventor: Hideki Goto
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Publication number: 20110081599Abstract: Non-platinum (Pt) electrode catalysts for fuel cells, methods of manufacturing the same, and fuel cells including the non-Pt electrode catalysts. Each of the non-Pt electrode catalysts for fuel cells includes at least palladium (Pd) and iridium (Ir), and further includes a metal, oxide of the metal, or mixture thereof for compensating for the activity of Pd and Ir.Type: ApplicationFiled: October 6, 2010Publication date: April 7, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Kang-hee LEE, Chan-ho Pak, Kyung-jung Kwon, Seon-ah Jin, Dae-jong Yoo, Jong-won Lee
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Patent number: 7919424Abstract: Disclosed herein are a platinum-based catalyst for oxidation/reduction reactions and the use thereof. The platinum-based catalyst is prepared by loading a catalyst composition comprising a water soluble salt of at least one metal selected from among cerium (Ce), zirconium (Zr) and rhenium (Re), on a support comprising at least one selected from among alumina, silica and titania. The disclosed catalyst can be prepared in a simple manner without any particular limitation as to the kind of usable water soluble platinum salt, and when it is applied to various oxidation reactions, including water gas shift reactions of carbon monoxide, three-way catalytic reactions, and selective oxidation reactions of carbon monoxide, and to reduction reactions, such as reactions of removing nitrogen oxide (NOx), it will show excellent catalytic activity.Type: GrantFiled: July 30, 2009Date of Patent: April 5, 2011Assignee: SK Energy Co., Ltd.Inventors: Byong Sung Kwak, Young Seek Yoon, Jin Hong Kim, Mee Sook Lim
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Patent number: 7919431Abstract: A composition and method for preparation of a catalyst for the liquid phase selective hydrogenation of alkynes to alkenes with high selectivity to alkenes relative to alkanes, high alkyne conversion, and sustained catalytic activity comprising a Group VIII metal and a Group IB, Group IIB, Group IIIA, and/or Group VIIB promoter on a particulate support.Type: GrantFiled: December 4, 2003Date of Patent: April 5, 2011Inventors: Marvin M. Johnson, Edward R. Peterson, Sean C. Gattis
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Patent number: 7915196Abstract: A method of preparing a steam reforming catalyst characterized by improved resistance to attrition loss when used for cracking, reforming, water gas shift and gasification reactions on feedstock in a fluidized bed reactor, comprising: fabricating the ceramic support particle, coating a ceramic support by adding an aqueous solution of a precursor salt of a metal selected from the group consisting of Ni, Pt, Pd, Ru, Rh, Cr, Co, Mn, Mg, K, La and Fe and mixtures thereof to the ceramic support and calcining the coated ceramic in air to convert the metal salts to metal oxides.Type: GrantFiled: October 7, 2005Date of Patent: March 29, 2011Assignee: Alliance for Sustainable Energy, LLCInventors: Yves O. Parent, Kim Magrini, Steven M. Landin, Marcus A. Ritland
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Publication number: 20110071020Abstract: A process and catalyst are presented for the selective hydrogenation of branched diolefins and acetylenes to olefins. The process uses a catalyst having large pores, and a minimal amount of micropores. The catalyst is designed to have minimal diffusional resistance through the large pores, and to minimize the dehydrogenation of olefins to paraffins.Type: ApplicationFiled: September 21, 2009Publication date: March 24, 2011Applicant: UOP LLCInventors: Mark G. Riley, Bryan K. Glover
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Patent number: 7910518Abstract: A geometrically shaped solid carrier is provided that improves the performance and effectiveness of an olefin epoxidation catalyst for epoxidizing an olefin to an olefin oxide. In particular, improved performance and effectiveness of an olefin epoxidation catalyst is achieved by utilizing a geometrically shaped refractory solid carrier in which at least one wall thickness of said carrier is less than 2.5 mm.Type: GrantFiled: March 10, 2008Date of Patent: March 22, 2011Assignee: SD Lizenzverwertungsgesellschaft mbH & Co. KGInventors: Serguei Pak, Andrzej Rokicki, Howard Sachs
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Patent number: 7906454Abstract: The present invention relates to an exhaust gas cleaning catalyst comprising on a honeycomb carrier a catalytic coating. Said honeycomb carrier has an upstream end and a downstream end and a plurality of flow channels are running from the upstream end to the downstream end. The catalytic coating comprises catalytically active precious metal components of which at least one component exhibits a concentration profile along the honeycomb carrier starting with a low concentration at the upstream end which increases along the flow channels up to a maximum value and then decreases again to the downstream end.Type: GrantFiled: January 18, 2005Date of Patent: March 15, 2011Assignee: Umicore AG & Co. KGInventors: Anke Wolf, Dieter Lindner, Matthias Feger, Martin Roesch, Egbert Lox, Thomas Kreuzer
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Patent number: 7902104Abstract: This invention relates to a solid divided composition comprising grains whose mean size is greater than 25 ?m and less than 2.5 mm, wherein each grain is provided with a solid porous core and a homogeneous continuous metal layer consisting of at least one type of transition non-oxidised metal and extending along a gangue coating the core in such a way that pores are inaccessible. A method for the production of said composition and for the use thereof in the form of a solid catalyst is also disclosed.Type: GrantFiled: June 21, 2005Date of Patent: March 8, 2011Assignees: Arkema France, Institut National Polytechnique de ToulouseInventors: Philippe Kalck, Philippe Serp, Massimiliano Corrias
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Publication number: 20110052467Abstract: Ceramic nanofibers contain nanosize metal catalyst particles on the surface thereof. The catalyst-ceramic nanofibers when supported as by larger fibers form a medium that effectively catalyze various reactions as in fluid flow processes.Type: ApplicationFiled: January 12, 2009Publication date: March 3, 2011Applicant: University of AkronInventors: George G. Chase, G. R. Newkome, Sphurti Bhargava, Soo-Jin Park, Sneha Swaminathan
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Publication number: 20110033353Abstract: 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.Type: ApplicationFiled: July 27, 2010Publication date: February 10, 2011Applicant: BASF CorporationInventors: Attilio Siani, Torsten Muller-Stach, Torsten Neubauer, Xinyi Wei
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Publication number: 20110028770Abstract: An alpha-alumina support for a hydrogenation catalyst useful in hydrogenating fluoroolefins is provided.Type: ApplicationFiled: August 3, 2009Publication date: February 3, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: HAIYOU WANG, HSUEH SUNG TUNG, DANIEL C. MERKEL