Of Palladium Or Platinum Patents (Class 502/339)
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Patent number: 8486853Abstract: An exhaust gas purifying catalyst (1) according to the present invention includes noble metal particles (6), a first compound (7) supporting the noble metal particles (6), and a second compound (9) disposed not in contact with the noble metal particles (6) and having an oxygen storage capacity. An average distance between the first compound (7) and the second compound (9) is between 5 nm and 300 nm.Type: GrantFiled: March 4, 2010Date of Patent: July 16, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Kazuyuki Shiratori, Katsuo Suga, Masanori Nakamura, Hironori Wakamatsu, Hiroto Kikuchi, Tetsuro Naito, Jun Ikezawa
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Patent number: 8486852Abstract: A catalyst for diesel particle filter includes a platinum (Pt)-neodymium (Nd) alloy that is carried in silica, a preparation method thereof and a soot reduction device for diesel engine including the same, wherein the catalyst for diesel particle filter can maintain high catalyst activity and implement high nitrogen monoxide (NO) conversion efficiency even though it is used under the high temperature or vulcanization condition for a long time.Type: GrantFiled: July 16, 2012Date of Patent: July 16, 2013Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho-In Lee, Yeon-Su Kim, Yong-Kwon Chung, Jin Ha Lee, Jie Won Park
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Publication number: 20130178668Abstract: The present invention relates to catalysts, to processes for making catalysts and to chemical processes employing such catalysts. The multifunctional catalysts are preferably used for converting acetic acid and ethyl acetate to ethanol. The catalyst is effective for providing an acetic acid conversion greater than 20% and an ethyl acetate conversion greater than 0%. The catalyst comprises a precious metal and one or more active metals on a modified support. The modified support includes a metal selected from the group consisting of tungsten, vanadium, and tantalum, provided that the modified support does not contain phosphorous.Type: ApplicationFiled: August 27, 2012Publication date: July 11, 2013Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: Zhenhua Zhou, Heiko Weiner, Radmila Wollrab
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Publication number: 20130178665Abstract: The present invention relates to catalysts, to processes for making catalysts with acidic precursors and to chemical processes employing such catalysts. The catalysts are preferably used for converting acetic acid to ethanol. The catalyst comprises a precious metal and one or more active metals on a support, optionally a modified support.Type: ApplicationFiled: August 27, 2012Publication date: July 11, 2013Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: Zhenhua Zhou, Heiko Weiner
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Publication number: 20130177838Abstract: Hollow metal nanoparticles and methods for their manufacture are disclosed. In one embodiment the metal nanoparticles have a continuous and nonporous shell with a hollow core which induces surface smoothening and lattice contraction of the shell. In a particular embodiment, the hollow nanoparticles have an external diameter of less than 20 nm, a wall thickness of between 1 nm and 3 nm or, alternatively, a wall thickness of between 4 and 12 atomic layers. In another embodiment, the hollow nanoparticles are fabricated by a process in which a sacrificial core is coated with an ultrathin shell layer that encapsulates the entire core. Removal of the core produces contraction of the shell about the hollow interior. In a particular embodiment the shell is formed by galvanic displacement of core surface atoms while remaining core removal is accomplished by dissolution in acid solution or in an electrolyte during potential cycling between upper and lower applied potentials.Type: ApplicationFiled: July 13, 2011Publication date: July 11, 2013Applicant: Brookhaven Science Associates, LLCInventors: Jia Xu Wang, Radoslav R. Adzic
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Patent number: 8481450Abstract: Methods and systems for contacting of a crude feed with one or more catalysts to produce a total product that includes a crude product are described. The crude product is a liquid mixture at 25° C. and 0.101 MPa. The crude product has an MCR content of at most 90% of the MCR content of the crude feed. One or more other properties of the crude product may be changed by at least 10% relative to the respective properties of the crude feed.Type: GrantFiled: March 9, 2011Date of Patent: July 9, 2013Assignee: Shell Oil CompanyInventor: Opinder Kishan Bhan
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Publication number: 20130171033Abstract: The present invention relates to hierarchical structured nanotubes, to a method for preparing the same and to an application for the same, wherein the nanotubes include a plurality of connecting nanotubes for constituting a three-dimensional multi-dendrite morphology; and the method includes the following steps: (A) providing a polymer template including a plurality of organic nanowires; (B) forming an inorganic layer on the surface of the organic nanowires in the polymer template; and (C) performing a heat treatment on the polymer template having the inorganic layer on the surface so that partial atoms of the organic nanowires enter the inorganic layer.Type: ApplicationFiled: December 17, 2012Publication date: July 4, 2013Applicant: NATIONAL TSING HUA UNIVERSITYInventor: NATIONAL TSING HUA UNIVERSITY
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Patent number: 8475921Abstract: A composite material includes an aggregate which contains a first metal particle constituting a core and second metal oxide particulates surrounding the first metal particle and having an average primary particle diameter ranging from 1 to 100 nm.Type: GrantFiled: July 20, 2006Date of Patent: July 2, 2013Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Tomoyuki Kayama, Kouzi Banno, Kiyoshi Yamazaki, Koji Yokota
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Publication number: 20130165700Abstract: The present invention relates to a catalyst comprising platinum, tin and a secondary noble metal selected from the group consisting of rhodium, palladium, gold and iridium. The catalyst may be on a support. In some embodiments, the support may comprise calcium. The catalyst is used for converting acetic acid to ethanol.Type: ApplicationFiled: May 24, 2012Publication date: June 27, 2013Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: Zhenhua Zhou, Victor Johnston, Heiko Weiner, Radmila Wollrab
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Patent number: 8470730Abstract: Disclosed is a method for producing a catalyst, in which physical properties of a dried material or a calcined material in a production process of the catalyst are stable and a change in at least one of a catalyst activity and a selectivity to a target product is small and hence reproducibility of the catalyst is excellent. The present invention is a method for producing a catalyst containing molybdenum, bismuth, and iron, which contains the steps of washing a surface of at least one device equipped in an apparatus for the production of catalyst, to which a solid matter adheres, with a basic solution, and producing the catalyst with the apparatus for the production of catalyst thus washed.Type: GrantFiled: July 5, 2006Date of Patent: June 25, 2013Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Masahide Kondo, Masanori Nitta, Hiroyuki Naitou, Toru Kuroda, Seiichi Kawato
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Patent number: 8470495Abstract: Disclosed is an electrode catalyst comprising: (a) a support; (b) metal catalyst particles supported on the support and formed of a catalytically active metal or metal-containing alloy; and (c) an anti-coarsening compound, which is dispersed in at least one region selected from the group consisting of interstitial spaces among the catalyst particles and contact sites between the support and the catalyst particles, and has a coarsening temperature higher than that of the catalyst. A method for preparing the electrode catalyst is also disclosed.Type: GrantFiled: July 18, 2006Date of Patent: June 25, 2013Assignee: LG Chem, Ltd.Inventors: Byungwoo Park, Chunjoong Kim, Myunggoo Kang, Jin Nam Park, Hyuk Kim, Min Suk Kim
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Publication number: 20130157844Abstract: An object is to maintain an effect of enhancing activity of noble metal particles by transition metal without increasing production cost and an environmental load. An exhaust gas purifying catalyst 1 is composed of: noble metal particles 2; first compounds 3 which contact the noble metal particles 2 and suppress movement of the noble metal particles 2; and second compounds 4 which contain the noble metal particles 2 and the first compounds 3, suppress the movement of the noble metal particles 2, and suppress coagulation of the first compounds 3 following mutual contact of the first compounds 3, wherein the first compounds 3 support the noble metal particles 2, and simplexes or aggregates of the first compounds 3 supporting the noble metal particles 2 are included in section partitioned by the second compounds 4.Type: ApplicationFiled: February 19, 2013Publication date: June 20, 2013Inventors: Masanori NAKAMURA, Katsuo Suga, Hironori Wakamatsu, Kazuyuki Shiratori, Hirofumi Yasuda, Makoto Aoyama, Jun Ikezawa
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Publication number: 20130157203Abstract: A gas fired catalytic heater is provided that foregoes the need for an electrical heating element to provide the activation energy for the hydrocarbon catalyst pad. An alcohol self-igniting catalyst pad is used to provide the activation energy to the hydrocarbon catalyst pad thereby removing dependence of the heater on an outside electrical energy source to initiate start-up of the heater. The catalyst pad includes a flexible wash coat; a noble metal dispersed on the wash coat; an anti-sintering element saturating the wash coat; and a catalyst promoter saturating the wash coat.Type: ApplicationFiled: February 15, 2013Publication date: June 20, 2013Applicant: CC/ Thermal Technologies Inc.Inventor: CC/ Thermal Technologies Inc.
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Patent number: 8465711Abstract: An exhaust gas purification catalyst of the present invention contains at least a precious metal coated with lanthanum-containing alumina. In at least one embodiment, it is possible to provide: an exhaust gas purification catalyst which can (i) have an increase in heat resistance, and (ii) inhibit the precious metal from being mixed in alumina and therefore inhibit the precious metal from forming a solid solution in combination with alumina; and a method for efficiently purifying, by use of the catalyst, an exhaust gas emitted from an internal-combustion engine.Type: GrantFiled: August 27, 2009Date of Patent: June 18, 2013Assignees: Umicore Shokubai Japan Co., Ltd., Umicore Shokubai USA Inc.Inventors: Masanori Ikeda, Kosuke Mikita, Takahiro Ikegami, Yuji Ogino, Hideki Goto
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Patent number: 8466082Abstract: A shell catalyst for the preparation of vinyl acetate monomer, comprising an oxidic porous catalyst support with an outer shell, containing metallic Pd and Au, wherein the framework structure of the porous catalyst support contains hafnium oxide units. This shell catalyst is suitable for the preparation of VAM and is characterized by a relatively high activity and VAM selectivity and maintains this activity and selectivity over relatively long service lives. Also, processes for the preparation and use of the shell catalyst.Type: GrantFiled: May 30, 2008Date of Patent: June 18, 2013Assignee: Sued-Chemie IP GmbH & Co. KGInventors: Alfred Hagemeyer, Gerhard Mestl, Peter Scheck
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Publication number: 20130149221Abstract: A catalysed substrate monolith 12 for use in treating exhaust gas emitted from a lean-burn internal combustion engine, which catalysed substrate monolith 12 comprising a first washcoat coating 16 and a second washcoat coating 18, 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.Type: ApplicationFiled: December 11, 2012Publication date: June 13, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
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Patent number: 8461073Abstract: An object of the present invention is to provide a catalyst support which can maintain the purifying ability of HC, CO and NO even after being exposed to a high temperature atmosphere such as about 1000° C. for a long term and a method which can easily produce the catalyst support. According to the present invention there is provided a method for producing a catalyst support of porous alumina formed with pores within which magneto-plumbite type complex oxide ((La.Type: GrantFiled: August 20, 2010Date of Patent: June 11, 2013Assignee: Kabushiki Kaisha F.C.C.Inventors: Akihiko Tomoda, Ryou Suzuki, Shintaro Yagi
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Patent number: 8461373Abstract: Disclosed is a catalyst for use in production of carboxylic acid ester by reacting (a) aldehyde and alcohol, or (b) one or more types of alcohols, in the presence of oxygen; wherein oxidized nickel and X (wherein X represents at least one element selected from the group consisting of nickel, palladium, platinum, ruthenium, gold, silver and copper) are loaded onto a support within the range of the atomic ratio of Ni/(Ni+X) of from 0.20 to 0.99.Type: GrantFiled: July 31, 2008Date of Patent: June 11, 2013Assignee: Asahi Kasei Chemicals CorporationInventors: Ken Suzuki, Tatsuo Yamaguchi
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Patent number: 8460937Abstract: A method of screening catalysts for liquid-phase selective hydrogenation by preparing a test catalyst by adding a promoter to a reference catalyst; preparing a liquid reactant stream comprising C2H2 dissolved in n-methyl-2-pyrrolidone; testing the test and reference catalysts by contacting the reactant stream and gas mixture comprising hydrogen and carbon monoxide in continuous flow with the test catalyst and reference catalyst, respectively, at selective hydrogenation reaction conditions to produce a product stream, condensing substantially all of the n-methyl-2-pyrrolidone from the product stream; measuring the concentrations of products comprising C2H2, C2H4, and C2H6 in the product stream at steady state; determining performance parameters for the test catalyst and the reference catalyst comprising the respective C2H2 conversion Sc and C2H4 selectivity relative to C2H6 Ss; and comparing the test catalyst performance parameters to those for the reference catalyst.Type: GrantFiled: March 27, 2012Date of Patent: June 11, 2013Assignee: Synfuels International, Inc.Inventors: Marvin M. Johnson, Edward R. Peterson, Sean C. Gattis
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Publication number: 20130143731Abstract: A supported noble metal catalyst and a process for preparing the same in situ are provided. Hexamethylenetetramine, a soluble divalent metal salt solution, a Al2O3 carrier and a soluble noble metal salt solution, are mixed and crystallized, in which the hexamethylenetetramine acts as both a precipitating agent for producing hydrotalcite and a reducing agent for the noble metal precursor, and a supported catalyst Me-LDHs-Al2O3 containing an elementary substance of a noble metal is prepared by a one-step reaction. During the growth of the hydrotalcite, Al3+ on the surface layer of the Al2O3 carrier is directly used as the trivalent metal ion to form the slab structure of the hydrotalcite, and the hydrotalcite is grown in situ on the surface of the alumina carrier. The noble metal element particle in the catalyst has a particle size of 10 to 60 nm, and has an even and stable dispersion on or between slabs of the hydrotalcite.Type: ApplicationFiled: May 27, 2010Publication date: June 6, 2013Applicant: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGYInventors: Dianqing Li, Junting Feng, Xiaoyan Ma
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Publication number: 20130142714Abstract: Diesel oxidation catalysts comprising a first washcoat layer including a platinum group metal impregnated on a promoted non-zeolitic support are described. The promoter is one or more of tin, manganese, indium, group VIII metals. Methods of making and using the diesel oxidation catalyst, including emissions treatment systems, are also described.Type: ApplicationFiled: December 1, 2011Publication date: June 6, 2013Applicant: BASF Catalysts LLCInventors: Shiang Sung, Stanley A. Roth, Torsten W. Mueller-Stach, Attilio Siani
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Patent number: 8455390Abstract: An exhaust gas purifying catalyst includes a monolithic substrate (2), and a transition metal oxide layer (3) formed in the monolithic substrate (2). The transition metal oxide layer (3) contains transition metal oxide powder including: transition metal oxide particles (10); a first compound (20) on which the transition metal oxide particles (10) are supported; and a second compound (30) that surrounds a single body or an aggregate of the transition metal oxide particles (10) and the first compound (20).Type: GrantFiled: June 23, 2009Date of Patent: June 4, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Hiroto Kikuchi, Masanori Nakamura, Hironori Wakamatsu, Katsuo Suga, Toshiharu Miyamura, Jun Ikezawa, Tetsuro Naito, Junji Ito
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Publication number: 20130137009Abstract: An electrode catalyst for a fuel cell which including alloy particles including a Group 8 metal and a Group 9 metal.Type: ApplicationFiled: November 29, 2012Publication date: May 30, 2013Applicants: SAMSUNG SDI CO., LTD., SAMSUNG ELECTRONICS CO., LTD.Inventors: Samsung Electronics Co., Ltd., Samsung SDI Co., Ltd.
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Patent number: 8450236Abstract: A process for making a catalyst having precious metal nanoparticles deposited on a support includes first providing an aqueous dispersion of support particles. A pre-treatment slurry is prepared by mixing the aqueous dispersion of support particles with a water-soluble precious metal precursor and a reducing agent. The pre-treatment slurry is hydrothermally treated at a temperature in the range of from about 40° C. to about 220° C. for a time sufficient to deposit precious metal nanoparticles on the surface of the support particles, the precious metal nanoparticles having an average particle size less about 50 nm.Type: GrantFiled: April 13, 2010Date of Patent: May 28, 2013Assignee: Cristal USA Inc.Inventors: Guoyi Fu, Mark B. Watson, Charles B. Muehlberger
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Patent number: 8450235Abstract: A supported composite particle material comprises: a composite particle formed of an oxidized nickel and X (wherein X represents at least one of elements selected from the group consisting of nickel, palladium, platinum, ruthenium, gold, silver and copper); and a support on which the composite particle is supported, the supported composite particle material having a supported layer in which the composite particle is localized.Type: GrantFiled: October 23, 2008Date of Patent: May 28, 2013Assignee: Asahi Kasei Chemicals CorporationInventors: Ken Suzuki, Tatsuo Yamaguchi
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Publication number: 20130131399Abstract: A process for producing a catalyst, the process comprising the steps of: impregnating a first metal from a first metal precursor on a support to form a first impregnated support; calcining the first impregnated support; impregnating a second metal from a second metal precursor on the first impregnated support to form a second impregnated support; calcining the second impregnated support to form the catalyst, wherein the catalyst has a total metal loading of at least 2 wt. % based on the total weight of the catalyst. A method for hydrogenating alkanoic acids in the presence of the catalyst is also disclosed.Type: ApplicationFiled: November 23, 2011Publication date: May 23, 2013Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: Heiko Weiner, Ana Rita Almeida, Graham Ormsby
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Patent number: 8445403Abstract: An oxidation catalyst is described for the exhaust gas purification of utility vehicles with diesel engines, which contains a substrate and a catalytically active coating of platinum, active aluminum oxide and aluminum-silicon mixed oxide. The two oxidic support materials, aluminum oxide and aluminum-silicon mixed oxide, are catalytically activated with platinum, the majority of platinum being present on the active aluminum oxide. The oxidation catalyst is distinguished by good NO oxidation rates together with a high poisoning resistance against sulfur compounds.Type: GrantFiled: June 9, 2009Date of Patent: May 21, 2013Assignee: Umicore AG & Co. KGInventors: Stéphanie Frantz, Frank-Walter Schuetze, Anke Woerz, Gerald Jeske
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Patent number: 8435921Abstract: A method for preparing oxidation catalyst comprising cerium oxide and a metal selected from the group consisting of gold, platinum palladium, tin, ruthenium, or nickel by sputtering cerium oxide and a metal from a target to a substrate wherein the cerium oxide and a metal material are sputtered to the substrate concurrently from at least one target under an argon atmosphere to form a layer of cerium oxide including dispersed atoms of the metal Specific Au—CeO2 and Pt—CeO2 catalysts are prepared by using this method.Type: GrantFiled: October 16, 2009Date of Patent: May 7, 2013Assignee: Univerzita Karlova V PrazeInventor: Vladimir Matolin
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Patent number: 8435917Abstract: Ammonia oxidation catalyst units comprising a pair of honeycomb-type blocks having interplaced between them a layer of a gas permeable material performing the function of radially mixing the gas flow, said blocks comprising an ammonia oxidation catalysts, and having height of less than 15 cm and the interplaced layer height of 3 to 0.5 cm.Type: GrantFiled: December 17, 2009Date of Patent: May 7, 2013Assignee: Sued-Chemie Catalysts Italia S.R.L.Inventors: Marvin Estenfelder, Alberto Cremona
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Patent number: 8435916Abstract: The invention aims at providing a platinum black material, without using an expensive and rare material, which is excellent in CO poisoning inhibiting effect, H2S poisoning inhibiting effect, SO4 poisoning inhibiting effect and HCHO poisoning inhibiting effect, and a method for fluorinating platinum black. The platinum black material is characterized by fluorine adsorbed on its surface. The method for fluorinating platinum black is characterized by allowing platinum black to stand in a mixed gas atmosphere of n inert gas and fluorine in a low-pressure chamber to make fluorine adsorbed on the surface of the platinum black.Type: GrantFiled: July 6, 2011Date of Patent: May 7, 2013Assignees: Stella Chemifa CorporationInventors: Masayoshi Ishida, Shinji Hashiguchi, Yasutaka Tashiro
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Patent number: 8435918Abstract: Ceria-coated aerogels can include an aerogel support material having a stabilized ceria coating thereon. The ceria coating can be formed by solution or vapor deposition of alcogels or aerogels. Additional catalytic metal species can also be incorporated into the coating to form multi-metallic compounds having improved catalytic activity. Further, the ceria coated aerogels retain high surface areas at elevated temperatures. Thus, improvements in catalytic activity and thermal stability can be achieved using these ceria-coated composite aerogels.Type: GrantFiled: March 15, 2007Date of Patent: May 7, 2013Assignee: University of Utah Research FoundationInventors: Edward M. Eyring, Richard D. Ernst, Gregory C. Turpin, Brian C. Dunn
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Publication number: 20130105333Abstract: Novel catalytic materials and methods for producing the same are shown and described. The present disclosure provides catalytic materials formed from producing an alloy of an oxophilic metal and a metal having electro-oxidative activity using spray pyrolysis. The present disclosure further provides methods and mechanisms for both detecting and removing hydrazine from a system.Type: ApplicationFiled: July 7, 2011Publication date: May 2, 2013Inventors: Barr Halevi, Timothy Olson, Svitlana Pylypenko, Abhaya Datye, Plamen B. Atanassov, Ulises Martinez
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Publication number: 20130102819Abstract: This invention relates to heterogeneous catalysts useful for selective hydrogenation of unsaturated hydrocarbons, comprising palladium and optionally a promoter, supported on a substrate, having an uncoated BET surface area of ?9 m2/g, the surface being coated with an ionic liquid. Also described are methods of making the catalysts and methods of selective hydrogenation of acetylene and/or dienes in front-end mixed olefin feed streams.Type: ApplicationFiled: October 19, 2011Publication date: April 25, 2013Inventors: Normen Szesni, Alfred Hagemeyer, Frank Grossmann, Richard Fischer, Michael Urbancic, Claus Lugmair, Mingyong Sun, Hongyi C. Hou, David Michael Lowe
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Publication number: 20130089481Abstract: 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.Type: ApplicationFiled: October 5, 2012Publication date: April 11, 2013Applicants: JOHNSON MATTHEY PUBLIC LIMITED COMPANY, JOHNSON MATTHEY JAPAN GODO KAISHAInventors: JOHNSON MATTHEY JAPAN GODO KAISHA, Johnson Matthey Public Limited Company
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Patent number: 8415269Abstract: A supported palladium-gold catalyst is produced under mild conditions using a commonly available base, such as sodium hydroxide (NaOH) or sodium carbonate (Na2CO3). In this method, support materials and a base solution are mixed together and the temperature of the mixture is increased to a temperature above room temperature. Then, palladium salt and gold salt are added to the mixture while maintaining the pH of the mixture to be greater than 7.0 and keeping the mixture at a temperature above room temperature. This is followed by cooling the mixture while adding acetic acid to maintain the pH of the mixture to be within a desired pH range, filtering out the supported palladium-gold particles, washing with a pH buffer solution and calcining.Type: GrantFiled: January 13, 2010Date of Patent: April 9, 2013Assignee: WGCH Technology LimitedInventors: Xianghong Hao, Ramesh Sharma, Geoffrey McCool, Brian Harrison, Dietmar Wahl
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Patent number: 8410014Abstract: Especially physically stable metal oxide catalyst supports are prepared by suspending a metal oxide in a continuous phase, activating by fine dispersion, coagulation to a viscoelastic mass, shaping, drying, and calcining. The catalyst support thus prepared may be treated with catalytic agents to produce supported catalysts for olefin oxidation.Type: GrantFiled: December 6, 2007Date of Patent: April 2, 2013Assignee: Wacker Chemie AGInventors: Roland Heidenreich, Hans-Jurgen Eberle, Johann Weis
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Patent number: 8409518Abstract: A sulfur tolerant oxidation catalyst with appreciable NO and HC oxidation capabilities has been developed for use in any component of an exhaust aftertreatment system for a lean-burn engine where the oxidation of at least NO is desired. Several non-exclusive examples of such components where the oxidation catalyst may be employed include a DOC and a LNT. The oxidation catalyst may comprise perovskite oxide particles that support palladium particles. The ability of the palladium supported perovskite oxide particles to concurrently oxidize NO and HC's can significantly diminish or altogether eliminate the use of platinum in the exhaust aftertreatment system for at least NO oxidation. The oxidation catalyst, moreover, may exhibit superior thermal durability and better NO and HC oxidation activities than platinum in some instances.Type: GrantFiled: March 9, 2010Date of Patent: April 2, 2013Assignee: GM Global Technology Operations LLCInventors: Chang H Kim, Wei Li, Richard J. Blint
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Publication number: 20130078548Abstract: An electrode catalyst for fuel cell, a method of preparing the electrode catalyst, a membrane electrode assembly including the electrode catalyst, and a fuel cell including the membrane electrode assembly. The electrode catalyst includes a crystalline catalyst particle incorporating a precious metal having oxygen reduction activity and a Group 13 element, where the Group 13 element is present in a unit lattice of the crystalline catalyst particle.Type: ApplicationFiled: September 21, 2012Publication date: March 28, 2013Applicants: SAMSUNG SDI CO., LTD., SAMSUNG ELECTRONICS CO., LTD.Inventors: Kang-hee LEE, Chan-ho PAK, Dae-jong YOO, Seon-ah JIN
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Publication number: 20130078173Abstract: A catalyst comprising: (a) a first layer comprising an oxidizing catalyst having an effective PGM loading such that oxidation of hydrocarbons generates sufficient heat to regenerate soot, wherein said effective amount of PGM is greater than about 10 g/ft3; and (b) a second layer adjacent to said first layer and comprising a reducing catalyst to selectively reduce NOx.Type: ApplicationFiled: November 14, 2012Publication date: March 28, 2013Inventor: JULIAN PETER COX
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Publication number: 20130071318Abstract: Provided is a catalyst for fuel reformation that causes carbon monoxide contained in hydrogen gas, which is produced from a variety of hydrocarbon fuels, to react with hydrogen and thereby to be transformed into methane, while inhibiting methanation of carbon dioxide contained in the hydrogen gas. The selective CO methanation catalyst includes at least one of a halogen, an inorganic acid, and a metal oxo-acid adsorbed or bonded as a carbon dioxide reaction inhibitor to a carbon monoxide methanation active component.Type: ApplicationFiled: November 13, 2012Publication date: March 21, 2013Applicant: UNIVERSITY OF YAMANASHIInventor: University of Yamanashi
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Publication number: 20130065155Abstract: A catalyst layer material, a method for fabricating the same, and a fuel cell are provided. The catalyst layer material utilized for the fuel cell includes a catalyst support and a catalyst distributed on the catalyst support. The catalyst support contains TixM1-xO2, wherein M is selected from the group consisting of a Group IB metal, a Group IIA metal, a Group IIB metal, a Group IIIA, a Group VB metal, a Group VIB metal, a Group VIIB metal and a Group VIIIB metal, and 0<X?0.9. By applying the non-carbonaceous catalyst support containing high conductivity metal elements to the fuel cell, stability and performance of the cell can be effectively enhanced.Type: ApplicationFiled: June 27, 2012Publication date: March 14, 2013Applicant: National Taiwan University of Science and TechnologyInventors: Van Thi Thanh Ho, Chun-Jern Pan, Wei-Nien Su, Bing-Joe Hwang
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Publication number: 20130058848Abstract: Disclosed herein is 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 being separated in a front and rear portion is disclosed. Provided is a catalytic material of at least two front and two rear layers in conjunction with a substrate, where each of the layers includes a support, all layers comprise a platinum group metal component, and the rear bottom layer is substantially free of a ceria-containing oxygen storage component (OSC).Type: ApplicationFiled: October 31, 2012Publication date: March 7, 2013Applicant: Umicore AG & Co. KGInventors: John G. Nunan, Raoul Klingmann, Ryan Andersen, Davion Clark, David Moser
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Publication number: 20130059231Abstract: Disclosed is a method for producing a core-shell structured electrocatalyst for a fuel cell. The method includes uniformly supporting nano-sized core particles on a support to obtain a core support, and selectively forming a shell layer only on the surface of the core particles of the core support. According to the method, the core and the shell layer can be formed without the need for a post-treatment process, such as chemical treatment and heat treatment. Further disclosed is a core-shell structured electrocatalyst for a fuel cell produced by the method. The core-shell structured electrocatalyst has a large amount of supported catalyst and exhibits superior catalytic activity and excellent electrochemical properties. Further disclosed is a fuel cell including the core-shell structured electrocatalyst.Type: ApplicationFiled: February 23, 2012Publication date: March 7, 2013Inventors: Seung Jun HWANG, Soo-Kil KIM, Sung Jong YOO, Jong Hyun JANG, Eun Ae CHO, Hyoung-Juhn KIM, Suk-Woo NAM, Tae Hoon LIM
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Patent number: 8389435Abstract: A metal oxide catalyst carrier particle has a center portion and an outer skin portion each containing a first metal oxide and a second metal oxide. The center portion and the outer skin portion are different in composition. The mole fraction of the metal of the first metal oxide is higher in the center portion than in the outer skin portion and the mole fraction of the metal of the second metal oxide is higher in the outer skin portion than in the center portion. The second metal oxide is selected from the group consisting of rare earth oxides, except for ceria, and alkali earth metal oxides. In addition, platinum is supported on the metal oxide catalyst carrier particle, thus forming an exhaust gas purification catalyst.Type: GrantFiled: March 30, 2007Date of Patent: March 5, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masahide Miura, Nobuyuki Takagi, Shinichi Matsumoto, Toshitaka Tanabe, Yasutaka Nagai, Kazuhiko Dohmae, Yasuo Ikeda
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Patent number: 8389175Abstract: A fuel cell (70) having an anode (72), a cathode (78) and an electrolyte (76) between the anode (72) and the cathode (78) includes a cathode catalyst (80) formed of a plurality of nanoparticles. Each nanoparticle (20) has a plurality of terraces (26) formed of platinum surface atoms (14), and a plurality of edge (28) and corner regions (29) formed of atoms from a second metal (30)—The cathode catalyst may be formed by combining a platinum nanoparticle with a metal salt in a solution. Ions from the second metal react with platinum and replace platinum atoms on the nanoparticle. The second metal atoms at the corner and edge regions of the nanoparticle, as well as at any surface defects, result in a more stable catalyst structure. In some embodiments, the fuel cell (70) is a proton exchange membrane fuel cell and the nanoparticles are tetrahedron-shaped. In some embodiments, the fuel cell (70) is a phosphoric acid fuel cell and the nanoparticles are cubic-shaped.Type: GrantFiled: May 16, 2008Date of Patent: March 5, 2013Assignee: UTC Power CorporationInventors: Minhua Shao, Belabbes Merzougui, Patrick L. Hagans, Susanne M. Opalka
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Patent number: 8389760Abstract: Disclosed is a palladium-containing catalyst which enables to produce an ?,?-unsaturated carboxylic acid in high selectivity from an olefin or an ?,?-unsaturated aldehyde. Also disclosed are a method for producing such a catalyst and a method for producing an ?,?-unsaturated carboxylic acid using such a catalyst. Specifically disclosed is a palladium-containing catalyst containing 0.001 to 0.25 mole of antimony element to 1 mole of palladium element or a palladium-containing catalyst containing palladium element which composes a metal, tellurium element, and bismuth element.Type: GrantFiled: November 8, 2011Date of Patent: March 5, 2013Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Toshiya Yasukawa, Toshiki Matsui, Ken Ooyachi, Yoshiyuki Himeno, Wataru Ninomiya
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Patent number: 8388898Abstract: The reduction of nitrogen oxides in gas is carried out, by means of selective reaction of the nitrogen oxide with the reducing agent in the in the solid catalyst. In order to achieve high catalytic activity, the above is carried out at high gas temperatures. As a rule, ceramic filter elements, coated with catalytic material are used. This does, however, give rise to the risk the catalytically active components are stripped from the filter during the hot gas filtration. A ceramic filter element with support material in the form of particles, with binder material and catalytic material is thus disclosed, whereby the binder material comprises catalytic material, or the binder material is partly replaced by the catalyst material and the support material particles (1) are connected to each other by means of the catalyst and/or binder material.Type: GrantFiled: November 16, 2010Date of Patent: March 5, 2013Assignee: Pall CorporationInventors: Steffen Heidenreich, Max-Eckhard Roessler, Astrid Walch, Manfred Gutmann, Sven Chudzinski
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Publication number: 20130045858Abstract: A supported oxidation catalyst includes a support having a metal oxide or metal salt, and mixed metal particles thereon. The mixed metal particles include first particles including a palladium compound, and second particles including a precious metal group (PMG) metal or PMG metal compound, wherein the PMG metal is not palladium. The oxidation catalyst may also be used as a gas sensor.Type: ApplicationFiled: August 17, 2012Publication date: February 21, 2013Applicant: University of Central Florida Research Foundation, Inc.Inventor: Nahid Mohajeri
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Publication number: 20130029842Abstract: The present invention provides core-shell type metal nanoparticles having a high surface coverage of the core portion with the shell portion, and a method for producing the same. Disclosed is core-shell type metal nanoparticles comprising a core portion comprising a core metal material and a shell portion covering the core portion, wherein the core portion substantially has no {100 } plane of the core metal material on the surface thereof.Type: ApplicationFiled: April 7, 2010Publication date: January 31, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroko Kimura, Naoki Takehiro, Koshi Sekizawa, Atsuo Iio, Tatsuya Arai
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Patent number: 8361925Abstract: The exhaust gas-purifying catalyst includes at least one of a first composite oxide represented by a formula A(Al2-xBx)O4 and a second composite oxide represented by a formula (Al2-yCy)O3, wherein element A is a divalent transition metal other than platinum-group elements, each of elements B and C is a transition metal other than platinum-group elements, x satisfies 0<x<2, and y satisfies 0<y<2.Type: GrantFiled: April 22, 2010Date of Patent: January 29, 2013Assignees: Cataler Corporation, Daihatsu Motor Co., Ltd.Inventors: Satoshi Matsueda, Mareo Kimura, Hiroto Yoshida, Keiichi Narita, Hirohisa Tanaka, Mari Uenisha, Masashi Taniguchi