Of Palladium Patents (Class 502/333)
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Publication number: 20140309457Abstract: The present invention relates to a catalyst comprising a ceramic support with a BET surface area of less than 40 m2/g and (a) 1.0 to 100 g of at least one metal of groups 8 to 12 of the periodic table of the elements, (b) 1.0 g to 100 g of at least one metal of groups 4 to 6 and 12 of the periodic table of the elements and (c) 1.0 g to 100 g of at least one metal of groups 14 and 15 of the periodic table of the elements per litre of bulk volume of the ceramic support, wherein the catalyst is additionally doped with (d) potassium in a content of from 0.0050% by weight to 0.20% by weight, based on the total weight of the catalyst. The present invention also provides the use of such a catalyst in the catalytic gas phase hydrogenation of nitroaromatics.Type: ApplicationFiled: August 29, 2012Publication date: October 16, 2014Applicant: BAYER INTELLECTUAL PROPERTY GMBHInventors: Michael Merkel, Karl-Heinz Wilke, Peter Lehner
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Patent number: 8858904Abstract: Described is a catalyzed soot filter wherein the inlet coating of the filter comprises an oxidation catalyst comprising platinum (Pt) and optionally palladium (Pd), wherein the outlet coating of the filter comprises an oxidation catalyst comprising Pd and optionally Pt, wherein the Pt concentration in the outlet coating is lower than the Pt concentration in the inlet coating and wherein the weight ratio of Pt:Pd in the outlet coating is in the range of from 0:1 to 2:1; and wherein the inlet coating and the outlet coating are present on the wall flow substrate at a coating loading ratio in the range of from 0.5 to 1.5, calculated as ratio of the loading of the inlet coating (in g/inch3 (g/(2.54 cm)3)):loading of the outlet coating (in g/inch3 (g/(2.54 cm)3)). Systems include such catalyzed soot filters, methods of diesel engine exhaust gas treatment and methods of manufacturing catalyzed soot filters are also described.Type: GrantFiled: February 22, 2011Date of Patent: October 14, 2014Assignee: BASF CorporationInventors: Alfred Helmut Punke, Gerd Grubert, Yuejin Li, Ruediger Wolff, Stanley Roth, Torsten Müller-Stach, Attilio Siani, Kenneth Voss, Torsten Neubauer
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Patent number: 8859458Abstract: Provided are a method of preparing an electrocatalyst for fuel cells in a core-shell structure, an electrocatalyst for fuel cells having a core-shell structure, and a fuel cell including the electrocatalyst for fuel cells. The method may be useful in forming a core and a shell layer without performing a subsequent process such as chemical treatment or heat treatment and forming a core support in which core particles having a nanosize diameter are homogeneously supported, followed by selectively forming shell layers on surfaces of the core particles in the support. Also, the electrocatalyst for fuel cells has a high catalyst-supporting amount and excellent catalyst activity and electrochemical property.Type: GrantFiled: September 21, 2011Date of Patent: October 14, 2014Assignee: Korea Institute of Science and TechnologyInventors: Seung Jun Hwang, Sung Jong Yoo, Soo Kil Kim, Eun Ae Cho, Jong Hyun Jang, Hyoung Juhn Kim, Suk Woo Nam, Tae Hoon Lim
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Patent number: 8853120Abstract: An exhaust gas purification catalyst has a substrate, a lower catalyst layer that is formed on the substrate and contains at least one of Pd and Pt, and an upper catalyst layer that is formed on the lower catalyst layer and contains Rh. A region that does not contain the upper catalyst layer is disposed on the exhaust gas upstream side of this exhaust gas purification catalyst. The lower catalyst layer includes a front-stage lower catalyst layer on the exhaust gas upstream side and a rear-stage lower catalyst layer on the exhaust gas downstream side. The front-stage lower catalyst layer contains an oxygen storage material.Type: GrantFiled: January 26, 2012Date of Patent: October 7, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yuki Aoki, Takeshi Nobukawa
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Patent number: 8852519Abstract: Disclosed is an exhaust gas purifying catalyst in which grain growth of a noble metal particle supported on a support is suppressed. Also, disclosed is a production process of an exhaust gas purifying catalyst, by which the above exhaust gas purifying catalyst can be produced. The exhaust gas purifying catalyst comprises a crystalline metal oxide support and a noble metal particle supported on the support, wherein the noble metal particle is epitaxially grown on the support, and wherein the noble metal particle is dispersed and supported on the outer and inner surfaces of the support. The process for producing an exhaust gas purifying catalyst comprises masking, in a solution, at least a part of the surface of a crystalline metal oxide support by a masking agent, introducing the support into a noble metal-containing solution containing a noble metal, and drying and firing the support and the noble metal-containing solution to support the noble metal on the support.Type: GrantFiled: July 9, 2010Date of Patent: October 7, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masao Watanabe, Oji Kuno, Nobusuke Kabashima, Keisuke Kishita, Noboru Otake, Hiromochi Tanaka
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Patent number: 8853123Abstract: Disclosed is a lean NOx trap (LNT) catalyst with enhanced NOx storage capacity at low temperature. More particularly, an LNT catalyst with enhanced NOx storage capacity at low temperature and significantly inhibited thermal desorption is prepared by coating a washcoat on a honeycomb-type carrier and drying and baking the same. The washcoat contains a first catalyst powder in which barium (Ba) and a precious metal are supported on a ceria support, and a second catalyst powder in which a precious metal is supported on a magnesium (Mg)-substituted alumina support The LNT catalyst of the present invention is useful as a NOx reducing catalyst for a passenger diesel vehicle.Type: GrantFiled: April 1, 2013Date of Patent: October 7, 2014Assignee: Hyundai Motor CompanyInventor: Chang Ho Jung
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Patent number: 8833064Abstract: Catalyst articles comprising substantially only a palladium precious metal component in a first catalytic layer and a rhodium component in a second catalytic layer and related methods of preparation and use are disclosed. Also disclosed is a catalyst article comprising a first layer formed on a carrier substrate, wherein the first layer comprises a refractory metal oxide and has a surface that is substantially uniform; a second layer formed on the first layer, wherein the second layer comprises i) an oxygen storage component that is about 50-90% by weight of the second layer and ii) a palladium component in an amount of about 2-5% by weight of the second layer, wherein the palladium component is substantially the only platinum group metal component, and a palladium-free third layer comprising a rhodium component supported on a thermostable oxygen storage component which is about 80-99% by weight of the second layer. One or more improved properties are exhibited by the catalyst article.Type: GrantFiled: November 1, 2010Date of Patent: September 16, 2014Assignee: BASF CorporationInventors: Michael P. Galligan, Pascaline H. Tran, Keshavaraja Alive, Ye Liu
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Patent number: 8828343Abstract: Catalyst articles comprising palladium and related methods of preparation and use are disclosed. Disclosed is a catalyst article comprising a first catalytic layer formed on a substrate, wherein the first catalytic layer comprises palladium impregnated on a ceria-free oxygen storage component and platinum impregnated on a refractory metal oxide, and a second catalytic layer formed on the first catalytic layer comprising platinum and rhodium impregnated on a ceria-containing oxygen storage component. The palladium component of the catalyst article is present in a higher proportion relative to the other platinum group metal components. The catalyst articles provide improved conversion of carbon monoxide in exhaust gases, particularly under rich engine operating conditions.Type: GrantFiled: March 2, 2011Date of Patent: September 9, 2014Assignee: BASF CorporationInventors: Xinsheng Liu, Ye Liu, Pascaline Harrison Tran, Keshavaraja Alive, Michael P. Galligan
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Patent number: 8828900Abstract: The exhaust gas purification catalyst according to the present invention has a substrate 54, a lower layer 57 disposed on this substrate 54, and an upper layer 58 disposed on this lower layer 57. The upper layer 58 is provided with a first catalyst and a second catalyst, and the lower layer 57 is provided with a first catalyst. This first catalyst has Al2O3 as a carrier and Pt and Pd as noble metals supported on the Al2O3, while the second catalyst typically has an Al2O3—ZrO2—TiO2 complex oxide as a carrier and has Pd as a noble metal supported on the Al2O3—ZrO2—TiO2 complex oxide. Moreover, the upper layer 58 has a hydrocarbon adsorbent 68.Type: GrantFiled: April 6, 2012Date of Patent: September 9, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Nobuyuki Takagi, Yuichi Sobue, Hanae Ikeda, Masaya Kamada, Ryoichi Inde
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Publication number: 20140249021Abstract: 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.Type: ApplicationFiled: February 7, 2014Publication date: September 4, 2014Inventors: Wilbert VAN DEN HOEK, Maximilian A. BIBERGER
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Patent number: 8802044Abstract: The invention relates to a filtration structure, for filtering a gas coming from a diesel engine, which is laden with gaseous pollutants of the nitrogen oxide NOx type and with solid particles, of the particulate filter type, said filtration structure being characterized in that it includes a catalytic system comprising at least one noble metal or transition metal suitable for reducing the NOx and a support material, in which said support material comprises or is made of a zirconium oxide partially substituted with a trivalent cation M3+ or with a divalent cation M?2+, said zirconium oxide being in a reduced, oxygen-sub-stoichiometric, state.Type: GrantFiled: December 16, 2009Date of Patent: August 12, 2014Assignees: Saint-Gobain Centre de Recherches et d'Etudes Europeen, Centre National de la Recherche ScientifiqueInventors: Philippe Vernoux, Abdelkader Hadjar, Agnes Princivalle, Christian Guizard
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Patent number: 8796172Abstract: An exhaust gas purification catalyst is provided with a catalyst coating layer (40) formed on the surface of a substrate (32). This catalyst coating layer (40) is formed of an upper catalyst coating layer (36) in which Rh particles are supported on a porous support, and a lower catalyst coating layer (34) in which Pd particles are supported on a support that contains an ACZ composite oxide made of alumina (Al2O3), ceria (CeO2), and zirconia (ZrO2).Type: GrantFiled: March 2, 2012Date of Patent: August 5, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Isao Chinzei
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Patent number: 8795619Abstract: A catalyst for purification of exhaust gas, in which a noble metal is supported on a metal oxide support, has a basic site content of 1 mmol/L-cat or less, as determined on the basis of an amount of CO2 desorbed per liter of the catalyst as measured by a CO2 temperature-programmed desorption method.Type: GrantFiled: May 8, 2008Date of Patent: August 5, 2014Assignees: Toyota Jidosha Kabushiki Kaisha, Cataler CorporationInventors: Tadashi Suzuki, Satoru Kato, Naoki Takahashi, Takaaki Kanazawa, Masanori Yamato, Kazuhiro Yoshimoto, Michihiko Takeuchi, Yuuji Matsuhisa
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Publication number: 20140212350Abstract: A catalyst article for treating an emission gas is provided comprising (a) a first catalyst layer having a plurality of consecutive sub-layers, wherein each sub-layer includes vanadium on a first refractory metal oxide support selected from alumina, titania, zirconia, ceria, silica, and mixtures of these; (b) a second catalyst layer comprising one or more noble metals disposed on a second refractory metal oxide support; and (c) a substrate, wherein the first and second catalyst layers are on and/or within the substrate.Type: ApplicationFiled: January 28, 2014Publication date: July 31, 2014Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: PAUL JOSEPH ANDERSEN, KEVIN DOURA
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Patent number: 8791280Abstract: This invention relates to catalyst carriers to be used as supports for metal and metal oxide catalyst components of use in a variety of chemical reactions. More specifically, the invention provides a process of formulating an alpha alumina carrier that is suitable as a support for silver and the use of such catalyst in chemical reactions, especially the epoxidation of ethylene to ethylene oxide. The composition comprises at least one hydrated precursor of alpha alumina; an optional alpha alumina; and a binder. The composition is substantially free of seeding particles.Type: GrantFiled: August 10, 2005Date of Patent: July 29, 2014Assignee: SD Lizenzverwertungsgesellschaft mbH & Co. KGInventor: Nabil Rizkalla
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Patent number: 8784759Abstract: The present invention relates to a nitrogen oxide storage catalyst comprising: a substrate; a first washcoat layer disposed on the substrate, the first washcoat layer comprising metal oxide support particles and a nitrogen oxide storage material comprising at least one metal compound selected from the group consisting of alkaline earth metal compounds, alkali metal compounds, rare earth metal compounds, and mixtures thereof, at least a portion of said at least one metal compound being supported on the metal oxide support particles; and a second washcoat layer disposed over the first washcoat layer, said second washcoat layer comprising Rh, wherein the first washcoat layer contains substantially no Rh, and wherein the second washcoat layer is disposed on 100-x % of the surface of the first washcoat layer, x ranging from 20 to 80.Type: GrantFiled: June 9, 2011Date of Patent: July 22, 2014Assignee: BASF SEInventor: Marcus Hilgendorff
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Patent number: 8778832Abstract: The present invention is directed to a catalyst suitable for catalyzing a Fischer-Tropsch reaction, said catalyst comprising cobalt metal supported on zinc-oxide and having the following particle size distribution by volume: <10% having a particle size below 1 micron, 70-99% having a particle size between 1 and 5 micron, and <20% having a particle size above 5 micron.Type: GrantFiled: November 11, 2008Date of Patent: July 15, 2014Assignee: BASF CorporationInventors: Tjalling Rekker, Cornelis Roeland Baijense
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Patent number: 8771624Abstract: An Object of the patent is to remove highly reducing hydrocarbon exhausted during acceleration period, and to remove efficiently hydrocarbon even after contacting with highly reducing hydrocarbon. By using a catalyst having a higher proportion of palladium having surface charge of 2-valence or 4-valence supported than that of 0-valence by supporting palladium together with magnesium oxide, hydrocarbon exhausted from an internal combustion engine especially during acceleration period can be efficiently removed.Type: GrantFiled: March 13, 2009Date of Patent: July 8, 2014Assignees: Umicore Shokubai Japan Co., Ltd, Umicore Shokubai USA Inc.Inventors: Masanori Ikeda, Hideki Goto, Kosuke Mikita
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Patent number: 8765625Abstract: An emission control catalyst includes copper-ceria to boost low temperature CO oxidation performance, generate exothermic heat during the process, and reduce HC and NOx emissions. As a result, system performance is boosted at equal catalyst cost or maintained at a reduced catalyst cost. In one embodiment, an engine exhaust catalyst includes a first washcoat layer having at least one of a platinum-based catalyst, a palladium-based catalyst, and combinations thereof; and a second washcoat layer having copper-ceria.Type: GrantFiled: December 9, 2010Date of Patent: July 1, 2014Assignee: Shubin, Inc.Inventors: Xianghong Hao, Juan Cai
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Patent number: 8765632Abstract: 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 A12O3 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: GrantFiled: June 25, 2009Date of Patent: July 1, 2014Assignee: 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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Patent number: 8759241Abstract: A method for making a catalyst composition suitable for various purposes, such as the reduction of nitrogen oxides, is provided. The method includes combining dawsonite or a dawsonite derivative with a catalytic active element.Type: GrantFiled: February 25, 2011Date of Patent: June 24, 2014Assignee: General Electric CompanyInventor: Venkat Subramaniam Venkataramani
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Publication number: 20140154163Abstract: Provided is a catalyst article for treating an emission gas comprising (a) a noble metal catalyst layer comprising one or more noble metals disposed on a first refractory metal oxide support; and (b) a vanadium catalyst layer comprising vanadium pre-fixed on a second refractory metal oxide support selected from alumina, titania, zirconia, ceria, silica, and mixtures of these, wherein the first catalyst layer is in physical contact with said second catalyst layer. Also provided is a method for making such a catalyst article, a method for treating gas emissions using such an article, and an emission gas treatment system incorporating such an article.Type: ApplicationFiled: November 27, 2013Publication date: June 5, 2014Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: PAUL JOSEPH ANDERSEN, KEVIN DOURA
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Patent number: 8741242Abstract: A NOx storage component comprises caesium silicate (Cs2SiO3) and at least one platinum group metal. The invention also includes a NOx absorber catalyst comprising a NOx storage component according to the invention disposed on a substrate monolith; a method of treating exhaust gas containing NOx from a lean burn internal combustion engine comprising the steps of contacting a NOx storage component comprising caesium silicate (Cs2SiO3) and at least one platinum group metal with lean exhaust gas containing NOx to adsorb NOx thereon; and periodically desorbing adsorbed NOx by contacting the NOx storage component with stoichiometric or rich exhaust gas; and a method of making a NOx storage component according to the invention comprising the steps of combining and reacting an aqueous salt of at least one platinum group metal, an aqueous caesium salt and a source of silica.Type: GrantFiled: October 20, 2011Date of Patent: June 3, 2014Assignee: Johnson Matthey PLCInventors: Jonathan Ashley Cooper, Michael Anthony Howard
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Patent number: 8735318Abstract: A catalyst for NOx storage and reduction may include a carrier that contains alkali metal and Al, or alkali earth metal and Al, a NOx storage element of alkali metal, alkali earth metal or rare earth element, and one or more noble metals that are selected from the group consisting of Pt, Pd, Ru, Ag, Au and Rh. The catalyst for NOx storage and reduction shows excellent NOx storage and reduction capability, maintains excellent storage and reduction capability especially before and after deterioration and sulfation, and shows excellent catalytic activity under low temperature environment, while maintaining unusually high hydrophobicity.Type: GrantFiled: December 1, 2010Date of Patent: May 27, 2014Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: In-Sik Nam, Sang Jun Park, Jin Ha Lee, Young-Kee Youn
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Patent number: 8734743Abstract: Described is a nitrogen oxide storage catalyst comprising: a substrate; a first washcoat layer provided on the substrate, the first washcoat layer comprising a nitrogen oxide storage material, a second washcoat layer provided on the first washcoat layer, the second washcoat layer comprising a hydrocarbon trap material, wherein the hydrocarbon trap material comprises substantially no element or compound in a state in which it is capable of catalyzing selective catalytic reduction, preferably wherein the hydrocarbon trap material comprises substantially no element or compound in a state in which it is capable of catalyzing a reaction wherein nitrogen oxide is reduced to N2, said catalyst further comprising a nitrogen oxide conversion material which is either comprised in the second washcoat layer and/or in a washcoat layer provided between the first washcoat layer and the second washcoat layer.Type: GrantFiled: June 9, 2011Date of Patent: May 27, 2014Assignee: BASF SEInventors: Torsten W. Müller-Stach, Susanne Stiebels, Edith Schneider, Torsten Neubauer
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Patent number: 8722001Abstract: A catalyst for the purification of exhaust gas that can be used to highly efficiently treat an exhaust gas which has moisture and fluctuates between an oxidizing atmosphere and a reducing atmosphere even after the catalyst is exposed to a high temperature is provided. The present invention relates to a catalyst for the purification of exhaust gas having a catalyst layer of catalyst components comprising a noble metal, magnesium oxide, and a refractory inorganic oxide formed on a three-dimensional structure, wherein the catalyst layer has two peaks originated from the magnesium oxide in a pore distribution obtained by mercury intrusion technique.Type: GrantFiled: October 16, 2009Date of Patent: May 13, 2014Assignees: Umicore Shokubai Japan Co., Ltd., Umicore Shokubai USA, Inc.Inventors: Mariko Ono, Akihisa Okumura
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Patent number: 8716165Abstract: A method for providing a catalyst on a substrate is disclosed comprising providing a first washcoat comprising a soluble washcoat salt species, a polar organic solvent, and an insoluble particulate material, contacting the first washcoat with a substrate to form a coated substrate, and then contacting the coated substrate with a second washcoat comprising an oxide or an oxide-supported catalyst to physisorb, chemisorb, bond, or otherwise adhere the oxide or the oxide-supported catalyst to the coated substrate. Also disclosed is a catalyst on a substrate comprising: a substrate; an anchor layer comprising a soluble washcoat salt species, a polar organic solvent, and an insoluble particulate material; and a second layer comprises an oxide or an oxide-supported catalyst. The catalyst on a substrate can be in either green or fired form.Type: GrantFiled: April 30, 2008Date of Patent: May 6, 2014Assignee: Corning IncorporatedInventor: William Peter Addiego
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Patent number: 8709365Abstract: The invention relates to a catalytically active particulate filter which, in addition to the properties typical of particulate filters, has hydrogen sulphide block function, and to a process for removing nitrogen oxides and particulates from the exhaust gas of internal combustion engines operated predominantly under lean conditions (so-called “lean-burn engines”) using the inventive catalytically active particulate filter. This particulate filter comprises a filter body, a copper compound and an oxidation-catalytic active coating which comprises at least one catalytically active platinum group metal. The copper compound is in a second coating applied to the filter body. The two functional coatings may be applied to the filter body consecutive in the direction of flow, i.e. zoned, or layered one on top of the other.Type: GrantFiled: July 8, 2010Date of Patent: April 29, 2014Assignee: Umicore AG & Co. KGInventors: Franz Dornhaus, Stephanie Frantz, Ina Grisstede
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Publication number: 20140112849Abstract: The present invention is directed to a process for the production of supported transition metals with high dispersion. The latter are deposited onto refractory oxides without using a further liquid solvent. Hence, according to this dry procedure no solvent is involved which obviates certain drawbacks connected with wet ion exchange, impregnation or other metal addition processes known in the art.Type: ApplicationFiled: June 14, 2012Publication date: April 24, 2014Applicant: Umicore AG & Co., KGInventors: Fei Wen, Barry W.L. Southward, Liesbet Jongen, Alexander Hoffmann, Juergen Gieshoff
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Patent number: 8703643Abstract: A catalyst for NOx storage and reduction may include a carrier that contains alkali metal and Al, or alkali earth metal and Al, a NOx storage element of alkali metal, alkali earth metal or rare earth element, and one or more noble metals that are selected from the group consisting of Pt, Pd, Ru, Ag, Au and Rh. The catalyst for NOx storage and reduction shows excellent NOx storage and reduction capability, maintains excellent storage and reduction capability especially before and after deterioration and sulfation, and shows excellent catalytic activity under low temperature environment, while maintaining unusually high hydrophobicity.Type: GrantFiled: December 1, 2010Date of Patent: April 22, 2014Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: In-Sik Nam, Sang Jun Park, Jin Ha Lee, Young-Kee Youn
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Patent number: 8697600Abstract: An exhaust gas purifying catalyst that contains a first oxygen storage material on which no noble metal is supported and which has a pyrochlore phase type regular array structure, and a second oxygen storage material which has a higher oxygen storage rate and a lower oxygen storage capacity than the first oxygen storage material and on which a platinum group noble metal is supported.Type: GrantFiled: July 22, 2011Date of Patent: April 15, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takeshi Nobukawa, Oji Kuno, Akira Morikawa, Kae Yamamura, Naoki Takahashi, Akihiko Suda
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Patent number: 8683787Abstract: An exhaust gas purifying catalyst (1) of the present invention includes anchor/promoter simultaneous enclosure particles (5) including catalyst units (13) which contain: noble metal particles (8); and anchor particles (9) as an anchor material of the noble metal particles (8) supporting the noble metal particles (8); promoter units (14) which are provided not in contact with the noble metal particles (8) and contain first promoter particles (11) having an oxygen storage and release capacity; and an enclosure material (12) which encloses both the catalyst units (13) and the promoter units (14), and separates the noble metal particles (8) and the anchor particles (9) in the catalyst units (13) from the first promoter particles (11) in the promoter units (14). The exhaust gas purifying catalyst (1) further includes second promoter particles (6) which have the oxygen storage and release capacity, and are not enclosed in the anchor/promoter simultaneous enclosure particles (5) by the enclosure material (12).Type: GrantFiled: November 15, 2010Date of Patent: April 1, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Takamasa Nakagawa, Masanori Nakamura, Misaki Fujimoto, Naoki Kachi
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Publication number: 20140088328Abstract: A hydrogenation process is disclosed. The process involves reacting a fluoroolefin with H2 in 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 ?-Al2O3 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 ?-Al2O3. Also disclosed is a hydrogenation process comprising reacting a fluoroolefin with H2 in 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 ?-Al2O3 wherein the palladium concentration is from about 0.001 wt % to about 0.Type: ApplicationFiled: May 16, 2012Publication date: March 27, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Patricia Cheung, Allen Capron Sievert, Concetta Lamarca
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Patent number: 8673809Abstract: 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 at around the stoichiometric air to fuel ratio. The catalyst includes: (A) a first catalyst component including at least rhodium, platinum, or palladium in a content of 0.01 to 0.5% by weight; and (B) a second catalyst component, which is the remainder, including a composite oxide or a mixed oxide including (a) at least zirconium oxide or titanium oxide, and (b) an oxide of at least praseodymium, yttrium, neodymium, tungsten, niobium, silicon, or 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. The invention further provides a two-layer catalyst that includes a surface catalyst layer containing the above-mentioned catalyst.Type: GrantFiled: March 17, 2011Date of Patent: March 18, 2014Assignee: Honda Motor Co., Ltd.Inventors: Tadao Nakatsuji, Kazuya Inada, Yuji Isogai, Kiyoshi Tanaami
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Patent number: 8669202Abstract: 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.Type: GrantFiled: February 23, 2011Date of Patent: March 11, 2014Assignee: SDCmaterials, Inc.Inventors: Wilbert van den Hoek, Maximilian A. Biberger
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Patent number: 8663588Abstract: A double-layer three-way catalyst for purification of the exhaust gases from internal combustion engines which has excellent activity and thermal stability is described. The catalyst contains active aluminum oxide and a first cerium/zirconium mixed oxide which are both catalytically activated with palladium in the first layer applied to a catalyst support. In the second layer which is in direct contact with the exhaust gas, the catalyst likewise contains an active aluminum oxide and a second cerium/zirconium mixed oxide which are both catalytically activated with rhodium. The second cerium/zirconium mixed oxide has a higher zirconium oxide content than the first mixed oxide.Type: GrantFiled: June 27, 2007Date of Patent: March 4, 2014Assignee: Umicore AG & Co. KGInventors: Dieter Lindner, Martin Roesch, Raoul Klingmann, Anke Wolf, Joerg-Michael Richter
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Publication number: 20140057776Abstract: The exhaust gas purification catalyst according to the present invention has a substrate 54, a lower layer 57 disposed on this substrate 54, and an upper layer 58 disposed on this lower layer 57. The upper layer 58 is provided with a first catalyst and a second catalyst, and the lower layer 57 is provided with a first catalyst. This first catalyst has Al2O3 as a carrier and Pt and Pd as noble metals supported on the Al2O3, while the second catalyst typically has an Al2O3—ZrO2—TiO2 complex oxide as a carrier and has Pd as a noble metal supported on the Al2O3—ZrO2—TiO2 complex oxide. Moreover, the upper layer 58 has a hydrocarbon adsorbent 68.Type: ApplicationFiled: April 6, 2012Publication date: February 27, 2014Inventors: Nobuyuki Takagi, Yuichi Sobue, Hanae Ikeda, Masaya Kamada, Ryoichi Inde
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Publication number: 20140044627Abstract: 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: October 21, 2013Publication date: February 13, 2014Applicant: BASF CorporationInventors: Attilio Siani, Torsten W. Müller-Stach, Torsten Neubauer, Xinyi Wei
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Patent number: 8648225Abstract: A process for hydrogenating highly unsaturated hydrocarbons to less unsaturated hydrocarbons wherein production of saturated hydrocarbons is minimized. The process utilizes catalyst including Ce2O3, MgO, and an inorganic support, and optionally palladium, optionally silver, and/or an optional alkali metal.Type: GrantFiled: April 12, 2010Date of Patent: February 11, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Tin-Tack Peter Cheung, Marvin M Johnson, Darin B. Tiedtke
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Patent number: 8640440Abstract: Disclosed herein is 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, which are suitable, 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. The first layer is in contact with the incoming exhaust gas, the second layer with the outgoing exhaust gas. Both layers contain alumina. The first layer contains palladium. The second layer contains, in addition to rhodium, an oxygen-storing cerium/zirconium mixed oxide.Type: GrantFiled: April 16, 2008Date of Patent: February 4, 2014Assignee: Umicore AG & Co. KGInventors: Raoul Klingmann, Martin Roesch, Dieter Lindner
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Publication number: 20140030158Abstract: 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: Al2O3 40 to 99% by mass, ZrO2 1 to 45% by mass, and TiO2 0 to 15% by mass.Type: ApplicationFiled: April 6, 2012Publication date: January 30, 2014Inventors: Nobuyuki Takagi, Yuichi Sobue, Hanae Ikeda, Masaya Kamada, Ryoichi Inde
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Patent number: 8637426Abstract: An oxidation catalyst composite, methods and systems for the treatment of exhaust gas emissions from an advanced combustion engine, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx) from a diesel engine and an advanced combustion diesel engine are disclosed. More particularly, washcoat compositions are disclosed comprising at least two washcoat layers, a first washcoat comprising a palladium component and a second washcoat containing platinum and at least about 50% of the total platinum is located in the rear of the catalyst.Type: GrantFiled: April 6, 2010Date of Patent: January 28, 2014Assignee: BASF CorporationInventors: Jeffrey B. Hoke, Joseph C. Dettling
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Patent number: 8637719Abstract: The invention concerns a catalyst comprising a porous support, palladium, at least one metal selected from the group constituted by alkalis and alkaline-earths, in which: the specific surface area of the porous support is in the range 50 to 210 m2/g; the palladium content in the catalyst is in the range 0.05% to 2% by weight; at least 80% by weight of the palladium is distributed in a crust at the periphery of the support, the thickness of said crust being in the range 20 to 200 ?m; the metallic dispersion D is in the range 25% to 70%; the density of the palladium particles in the crust is in the range 1500 to 4100 particles of palladium per ?m2; and said alkali and/or alkaline-earth metal is distributed homogeneously across the support. The invention also concerns the preparation of the catalyst and its use in selective hydrogenation.Type: GrantFiled: October 24, 2008Date of Patent: January 28, 2014Assignee: IFP Energies nouvellesInventors: Lars Fischer, Carine Petit-Clair, Cecile Thomazeau, Lois Sorbier, Catherine Verdon
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Patent number: 8633127Abstract: A composition comprising a supported hydrogenation catalyst comprising palladium and an organophosphorous compound, the supported hydrogenation catalyst being capable of selectively hydrogenating highly unsaturated hydrocarbons to unsaturated hydrocarbons. A method of making a selective hydrogenation catalyst comprising contacting a support with a palladium-containing compound to form a palladium supported composition, contacting the palladium supported composition with an organophosphorus compound to form a catalyst precursor, and reducing the catalyst precursor to form the catalyst.Type: GrantFiled: February 23, 2010Date of Patent: January 21, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Tin-Tack Peter Cheung, Zongxuan Hong
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Patent number: 8633131Abstract: A mesoporous oxide-catalyst complex including: a mesoporous metal oxide; and a catalyst metal supported on the mesoporous metal oxide, wherein the catalyst on the mesoporous metal oxide has a degree of dispersion of about 30 to about 90 percent.Type: GrantFiled: October 29, 2010Date of Patent: January 21, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Doo-hwan Lee, Hyun-chul Lee, Sang-min Ji, Kyo-sung Park, Seung-jae Lee, Seon-ah Jin
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Publication number: 20140005043Abstract: A catalyst can be manufactured using a method which can include preparing a first aqueous solution including zirconium, filling the pores of the porous alumina with the aqueous solution by a pore-filling method using the capillary phenomenon, forming a zirconia layer in the pores of the porous alumina, preparing a second aqueous solution including noble metals, filling the pores of the porous alumina with the second aqueous solution by a pore-filling method using the capillary phenomenon, and drying and baking the porous alumina to carry the noble metals in the pores of the porous alumina formed with a zirconia layer.Type: ApplicationFiled: September 9, 2013Publication date: January 2, 2014Applicant: Kabushiki Kaisha F.C.C.Inventors: Ryou Suzuki, Shintaro Yagi, Yusuke Ogata, Sho Taniguchi
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Publication number: 20130338393Abstract: Provided is a method for producing an alicyclic carboxylic acid by hydrogenating an aromatic ring of an aromatic carboxylic acid, which comprises using a catalyst containing ruthenium and palladium as a catalyst, and also provided is a co-supported ruthenium-palladium catalyst in which ruthenium and palladium are present in a form of particles containing both the ruthenium and palladium on a surface of a support. A catalyst has been developed which uses a relatively inexpensive noble metal, ruthenium, which has an activity equivalent to that of a rhodium catalyst, and which does not undergo decrease in activity as observed in a rhodium catalyst, and thereby an industrially simple method for producing an alicyclic carboxylic acid has been established.Type: ApplicationFiled: February 24, 2012Publication date: December 19, 2013Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Akifumi Iida, Ryoko Watanabe, Tomoo Tsujimoto
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Patent number: 8609578Abstract: An exhaust gas purifying catalyst is constituted by: noble metal particles (1); first compounds (2) which support the noble metal particles (1); second compounds (3) different in type from the first compounds (2); and oxides (4) which surround the noble metal particles (1), the first compounds (2) and the second compounds (3). A median diameter of the first compounds (2) and a median diameter of the second compounds (3) satisfy a relationship of a following inequality: median diameter of first compounds<median diameter of second compounds.Type: GrantFiled: June 30, 2009Date of Patent: December 17, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Masanori Nakamura, Yoshiaki Hiramoto, Hiroto Kikuchi, Hironori Wakamatsu, Kazuyuki Shiratori, Tetsuro Naito, Katsuo Suga
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Patent number: 8603941Abstract: A method and apparatus for the removal of NO2 emission from a lean burn compression ignition engine, wherein NO2 containing engine exhaust gas is brought in contact with a catalyst being active in the reduction of NO2 to NO and comprising at least one platinum group metal with the proviso that the platinum metal is not platinum and at least one redox active metal oxide and thereby reducing NO2 contained in the exhaust gas to NO by reaction with CO, hydrocarbons and/or soot being present in the exhaust gas.Type: GrantFiled: October 11, 2007Date of Patent: December 10, 2013Assignee: Haldor Topsoe A/SInventors: Søren Dahl, Keld Johansen, Søren Pehrson, Gurli Mogensen
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Patent number: 8603400Abstract: A series of binary and ternary Pt-alloys, that promote the important reactions for catalysis at an alloy surface; oxygen reduction, hydrogen oxidation, and hydrogen and oxygen evolution. The first two of these reactions are essential when applying the alloy for use in a PEMFC.Type: GrantFiled: May 20, 2010Date of Patent: December 10, 2013Assignee: California Institute of TechnologyInventors: Charles C. Hays, Sri R. Narayan