Patents by Inventor Xinyi Wei
Xinyi Wei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9611774Abstract: A catalyst for the treatment of exhaust gas emissions is disclosed. The catalyst can comprise ceria-alumina particles having a ceria phase present in a weight percent of the composite in the range of about 20% to about 80% on an oxide basis, an alkaline earth metal component supported on the ceria-alumina particles, wherein the CeO2 is present in the form of crystallites that are hydrothermally stable and have an average crystallite size less than 160 ? after aging at 950° C. for 5 hours in 2% O2 and 10% steam in N2.Type: GrantFiled: August 25, 2014Date of Patent: April 4, 2017Assignee: BASF CorporationInventors: Wen-Mei Xue, Xinyi Wei, Marcus Hilgendorff, Patrick Burk
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Patent number: 9610564Abstract: A lean NOx trap for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO), and the trapping and reduction of nitrogen oxides (NOx) is disclosed. Nitrogen oxide storage catalysts can comprise a layer on a substrate including ceria-alumina particles having a ceria phase present in a weight percent of the composite in the range of about 20% to about 80% on an oxide basis, an alkaline earth metal component supported on the ceria-alumina particles, wherein the CeO2 is present in the form of crystallites that are hydrothermally stable and have an average crystallite size less than 130 ? after aging at 950° C. for 5 hours in 2% O2 and 10% steam in N2.Type: GrantFiled: March 11, 2014Date of Patent: April 4, 2017Assignee: BASF CorporationInventors: Wen-Mei Xue, Xinyi Wei, Marcus Hilgendorff, Patrick Burk
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Patent number: 9120077Abstract: A diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC) and carbon monoxide (CO) is described. Also described is a novel washcoat composition including a surface-coated zeolite coated with at least one of zirconia and alumina, and a platinum group metal supported on a high surface area alumina.Type: GrantFiled: September 26, 2011Date of Patent: September 1, 2015Assignee: BASF CorporationInventors: Xinyi Wei, Stanley A. Roth
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Patent number: 9044734Abstract: The present invention relates to a layered diesel oxidation catalyst (DOC) comprising: a) a carrier substrate; b) a diesel oxidation catalytic material comprising b1) a first layer located on the carrier substrate, the first layer comprising palladium impregnated on a support material comprising ceria in an amount of at least 45 weight-% based on the total weight of the support material, and optionally comprising platinum; b2) a second layer located on the first layer, the second layer comprising palladium and platinum each impregnated on a support material comprising a metal oxide; wherein the platinum to palladium weight ratio of the first layer is lower than the platinum to palladium weight ratio of the second layer.Type: GrantFiled: September 21, 2012Date of Patent: June 2, 2015Assignees: BASF SE, BASF CORPORATIONInventors: Gerd Grubert, Torsten Neubauer, Alfred Punke, Marcus Hilgendorff, Torsten Müller-Stach, Olga Gerlach, Xinyi Wei, Jeffrey Hoke, Shiang Sung, Stanley Roth
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Publication number: 20140360171Abstract: A catalyst for the treatment of exhaust gas emissions is disclosed. The catalyst can comprise ceria-alumina particles having a ceria phase present in a weight percent of the composite in the range of about 20% to about 80% on an oxide basis, an alkaline earth metal component supported on the ceria-alumina particles, wherein the CeO2 is present in the form of crystallites that are hydrothermally stable and have an average crystallite size less than 160 ? after aging at 950° C. for 5 hours in 2% O2 and 10% steam in N2.Type: ApplicationFiled: August 25, 2014Publication date: December 11, 2014Inventors: Wen-Mei Xue, Xinyi Wei, Marcus Hilgendorff, Patrick Burk
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Publication number: 20140260214Abstract: A lean NOx trap for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO), and the trapping and reduction of nitrogen oxides (NOx) is disclosed. Nitrogen oxide storage catalysts can comprise a layer on a substrate including ceria-alumina particles having a ceria phase present in a weight percent of the composite in the range of about 20% to about 80% on an oxide basis, an alkaline earth metal component supported on the ceria-alumina particles, wherein the CeO2 is present in the form of crystallites that are hydrothermally stable and have an average crystallite size less than 130 ? after aging at 950° C. for 5 hours in 2% O2 and 10% steam in N2.Type: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Applicant: BASF CorporationInventors: Wen-Mei Xue, Xinyi Wei, Marcus Hilgendorff, Patrick Burk
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Patent number: 8668877Abstract: Diesel oxidation catalysts, catalytic articles, methods of making catalytic articles, emissions treatment systems and methods of treating an exhaust gas stream using the catalytic articles for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC) and carbon monoxide (CO) are described. Specific catalytic articles comprising a substrate with a first washcoat layer comprising greater than or equal to about 2% by weight palladium dispersed on a ceria support and a second washcoat layer comprising a platinum group metal and a refractory metal oxide are described.Type: GrantFiled: November 24, 2010Date of Patent: March 11, 2014Assignee: Basf CorporationInventors: Xinyi Wei, Stanley A. Roth
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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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Publication number: 20130172177Abstract: A catalyst comprising (i) a support, (ii) metal particles and (iii) a shell which is arranged between the metal particles, wherein the shell (iii) comprises silicon oxide.Type: ApplicationFiled: September 13, 2011Publication date: July 4, 2013Applicant: BASF SEInventors: Imme Domke, Wolfgang Rohde, Piotr Antoni Bazula, Norbert Mronga, Yong Liu, Martin Dieterle, Stanley Roth, Curtis Zimmermann, Xinyi Wei, Philipp Raff, Stephan Andreas Schunk, Olga Gerlach, Andreas Strasser, Michael Paul
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Patent number: 8329607Abstract: Provided are diesel exhaust components where palladium is segregated from a molecular sieve, specifically a zeolite, in a catalytic material. In the catalytic material, therefore, there are at least two layers: a palladium-containing layer that is substantially free of a molecular sieve and a hydrocarbon trap layer that comprises at least one molecular sieve and is substantially free of palladium. The palladium is provided on a high surface area, porous refractory metal oxide support. The catalytic material can further comprise a platinum component, where a minor amount of the platinum component is in the hydrocarbon trap layer, and a majority amount of the platinum component is in the palladium-containing layer. Systems and methods of using the same are also provided.Type: GrantFiled: January 14, 2010Date of Patent: December 11, 2012Assignee: BASF CorporationInventors: M. Shahjahan Kazi, Michel Deeba, Torsten Neubauer, Alfred Helmut Punke, Torsten Wolfgang Mueller-Stach, Gerd Grubert, Stanley A. Roth, Jeffrey Barmont Hoke, Shlang Sung, Yuejin Li, Xinyi Wei, Chung-Zong Wan
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Patent number: 8211392Abstract: Provided is a catalyst composition, in particular a diesel oxidation catalyst, for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO). More particularly, the present invention is directed to a catalyst structure comprising at least two, specifically three distinct layers, at least one of which contains an oxygen storage component (OSC) that is present in a layer separate from the majority of the platinum group metal (PGM) components, such as palladium and platinum.Type: GrantFiled: January 13, 2010Date of Patent: July 3, 2012Assignee: BASF CorporationInventors: Gerd Grubert, Torsten Neubauer, Alfred H. Punke, Torsten W. Müller-Stach, Attilio Siani, Stanley A. Roth, Jeffrey B. Hoke, Shiang Sung, Yuejin Li, Xinyi Wei, Michel Deeba
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Publication number: 20120124975Abstract: Diesel oxidation catalysts, catalytic articles, methods of making catalytic articles, emissions treatment systems and methods of treating an exhaust gas stream using the catalytic articles for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC) and carbon monoxide (CO) are described. Specific catalytic articles comprising a substrate with a first washcoat layer comprising greater than or equal to about 2% by weight palladium dispersed on a cerin support and a second washcoat layer comprising a platinum group metal and a refractory metal oxide are described.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: BASF CorporationInventors: Xinyi Wei, Stanley A. Roth
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Publication number: 20120079817Abstract: A diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC) and carbon monoxide (CO) is described. Also described is a novel washcoat composition including a surface-coated zeolite coated with at least one of zirconia and alumina, and a platinum group metal supported on a high surface area alumina.Type: ApplicationFiled: September 26, 2011Publication date: April 5, 2012Applicant: BASF CorporationInventors: Xinyi Wei, Stanley A. Roth
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Publication number: 20120077669Abstract: Described is a process for the preparation of a catalyst comprising the steps of: (i) providing one or more support materials; (ii) providing one or more polymers on the support material; and (iii) providing one or more metals on the one or more supported polymers; wherein in step (ii) the one or more polymers do not comprise cross-linked polymers and/or polymers which have been reacted with a cross-linking agent. Also described is a catalyst obtained or obtainable according to said process, as well as the use of the catalyst, in particular in a method for the treatment of automobile engine exhaust gas.Type: ApplicationFiled: September 28, 2011Publication date: March 29, 2012Applicants: BASF Corporation, BASF SEInventors: Torsten Müller-Stach, Attilio Siani, Torsten Neubauer, Xinyi Wei
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Patent number: 7976784Abstract: Catalysts, catalyst systems, and methods for removing ammonia and/or carbon monoxide in flue gases are provided where ammonia is used with a selective catalytic reduction catalyst for reducing oxides of nitrogen. An oxidation catalyst is utilized, which comprises particulate platinum or platinum/palladium dispersed on zirconia particles, the particulate platinum or platinum/palladium having an average particle size less than about 10 nm. The catalyst is effective to convert less than 20% of NO to NO2 passing through the oxidation catalyst.Type: GrantFiled: December 18, 2007Date of Patent: July 12, 2011Assignee: BASF CorporationInventors: Xinsheng Liu, Xinyi Wei, Pascaline Tran, Gerard Lapadula
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Patent number: 7922988Abstract: 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. Engine exhaust treatment system and methods of using the same are also provided. The catalytic material can be provided in layers such that a larger amount of oxygen storage component is provided in a downstream zone as compared to an upstream zone. For example, the upstream zone can be configured to have one, two, or three layers, and the downstream zone can be independently configured to have one, two, or three layers. In one or more embodiments, the catalyst supported on a carrier has three layers, where at least two of the layers are zoned to have an oxygen storage component being present in an upstream zone in an amount that is less than the oxygen storage component present in the downstream zone.Type: GrantFiled: October 30, 2009Date of Patent: April 12, 2011Inventors: Michel Deeba, Stephan Siemund, Xinyi Wei, Stefan Kotrel, Knut Wassermann, Glenn Svoboda, Harold Rabinowitz
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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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Patent number: 7816295Abstract: A hydrocarbon trap comprises an Ag-zeolite which is heated by a unique steaming regimen.Type: GrantFiled: June 5, 2008Date of Patent: October 19, 2010Assignee: BASF Catalysts LLCInventors: Xinsheng Liu, Xinyi Wei
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Publication number: 20100186375Abstract: Provided are diesel exhaust components where palladium is segregated from a molecular sieve, specifically a zeolite, in a catalytic material. In the catalytic material, therefore, there are at least two layers: a palladium-containing layer that is substantially free of a molecular sieve and a hydrocarbon trap layer that comprises at least one molecular sieve and is substantially free of palladium. The palladium is provided on a high surface area, porous refractory metal oxide support. The catalytic material can further comprise a platinum component, where a minor amount of the platinum component is in the hydrocarbon trap layer, and a majority amount of the platinum component is in the palladium-containing layer. Systems and methods of using the same are also provided.Type: ApplicationFiled: January 14, 2010Publication date: July 29, 2010Applicant: BASF Catalysts LLCInventors: M. Shahjahan Kazi, Michel Deeba, Torsten Neubauer, Alfred Helmut Punke, Torsten Wolfgang Mueller-Stach, Gerd Grubert, Stanley A. Roth, Jeffrey Barmont Hoke, Shiang Sung, Yuejin Li, Xinyi Wei, Chung-Zong Wan
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Publication number: 20100180581Abstract: Provided is a catalyst composition, in particular a diesel oxidation catalyst, for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO). More particularly, the present invention is directed to a catalyst structure comprising at least two, specifically three distinct layers, at least one of which contains an oxygen storage component (OSC) that is present in a layer separate from the majority of the platinum group metal (PGM) components, such as palladium and platinum.Type: ApplicationFiled: January 13, 2010Publication date: July 22, 2010Applicant: BASF Catalysts LLCInventors: Gerd Grubert, Torsten Neubauer, Alfred Helmut Punke, Torsten Wolfgang Mueller-Stach, Attilio Siani, Stanley A. Roth, Jeffrey Barmont Hoke, Shiang Sung, Yuejin Li, Xinyi Wei, Michel Deeba