Patents by Inventor Attilio Siani
Attilio Siani 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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Publication number: 20170320048Abstract: A layered catalyst composite for the treatment of exhaust gas emissions, effective to provide lean NOx trap functionality and three-way conversion functionality is described. Layered catalyst composites can comprise catalytic material on a substrate, the catalytic material comprising at least two layers. The first layer comprising rare earth oxide-high surface area refractory metal oxide particles, an alkaline earth metal supported on the rare earth oxide-high surface area refractory metal oxide particles, and at least one first platinum group metal component supported on the rare earth oxide-high surface area refractory metal oxide particles. The second layer comprising a second platinum group metal component supported on a first oxygen storage component (OSC) and/or a first refractory metal oxide support and, optionally, a third platinum group metal supported on a second refractory metal oxide support or a second oxygen storage component.Type: ApplicationFiled: July 21, 2017Publication date: November 9, 2017Inventors: Wen-Mei Xue, Attilio Siani, John K. Hochmuth, Markus Kinne, Stefan Kielbassa
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Patent number: 9744529Abstract: A layered catalyst composite for the treatment of exhaust gas emissions, effective to provide lean NOx trap functionality and three-way conversion functionality is described. Layered catalyst composites can comprise catalytic material on a substrate, the catalytic material comprising at least two layers. The first layer comprising rare earth oxide-high surface area refractory metal oxide particles, an alkaline earth metal supported on the rare earth oxide-high surface area refractory metal oxide particles, and at least one first platinum group metal component supported on the rare earth oxide-high surface area refractory metal oxide particles. The second layer comprising a second platinum group metal component supported on a first oxygen storage component (OSC) and/or a first refractory metal oxide support and, optionally, a third platinum group metal supported on a second refractory metal oxide support or a second oxygen storage component.Type: GrantFiled: March 16, 2015Date of Patent: August 29, 2017Assignee: BASF CorporationInventors: Wen-Mei Xue, Attilio Siani, John K. Hochmuth, Markus Kinne, Stefan Kielbassa
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Patent number: 9687818Abstract: 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: GrantFiled: October 21, 2013Date of Patent: June 27, 2017Assignee: BASF CorporationInventors: Attilio Siani, Torsten W. Müller-Stach, Torsten Neubauer, Xinyi Wei
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Patent number: 9266092Abstract: Provided are catalyst composites whose catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. The catalyst composites have a two-metal layer on a carrier, the two-metal layer comprising a rhodium component supported by a first support comprising a refractory metal oxide component or a first ceria-zirconia composite; a palladium component supported by a second support comprising a second ceria-zirconia composite; one or more of a promoter, stabilizer, or binder; wherein the amount of the total of the first and second ceria-zirconia composites in the two-metal layer is equal to or greater than the amount of the refractory metal oxide component. Methods of making and using the same are also provided.Type: GrantFiled: January 17, 2014Date of Patent: February 23, 2016Assignee: BASF CORPORATIONInventors: Mirko Arnold, Stefan Kotrel, Attilio Siani, Stephan Siemund, Thomas Schmitz, Burkhard Rabe, Gary A Gramiccioni, Oliver Seel, Torsten Neubauer, Knut Wassermann
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Publication number: 20150266014Abstract: A layered catalyst composite for the treatment of exhaust gas emissions, effective to provide lean NOx trap functionality and three-way conversion functionality is described. Layered catalyst composites can comprise catalytic material on a substrate, the catalytic material comprising at least two layers. The first layer comprising rare earth oxide-high surface area refractory metal oxide particles, an alkaline earth metal supported on the rare earth oxide-high surface area refractory metal oxide particles, and at least one first platinum group metal component supported on the rare earth oxide-high surface area refractory metal oxide particles. The second layer comprising a second platinum group metal component supported on a first oxygen storage component (OSC) and/or a first refractory metal oxide support and, optionally, a third platinum group metal supported on a second refractory metal oxide support or a second oxygen storage component.Type: ApplicationFiled: March 16, 2015Publication date: September 24, 2015Inventors: Wen-Mei Xue, Attilio Siani, John K. Hochmuth, Markus Kinne, Stefan Kielbassa
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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: 8815189Abstract: Exhaust systems and components are suitable for use with gasoline engines to capture particulates and to reduce gaseous emissions, where three-way conversion (TWC) catalysts located on a particulate filters are provided. Coated particle filters having washcoat loadings in the range of 1 to 4 g/ft3 result in minimal impact on back pressure while simultaneously providing TWC catalytic activity and particle trapping functionality to meet increasingly stringent regulations such as Euro 6. Sufficient to high levels of oxygen storage components (OSC) are also delivered on and/or within the filter. The filters can have a coated porosity that is substantially the same as its uncoated porosity. The TWC catalytic material can comprise a particle size distribution such that a first set of particles has a first d90 particle size of 7.5 ?m or less and a second set of particles has a second d90 particle size of more than 7.5 ?m.Type: GrantFiled: April 15, 2011Date of Patent: August 26, 2014Assignee: BASF CorporationInventors: Mirko Arnold, Stephan Siemund, Attilio Siani, Knut Wassermann
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Publication number: 20140205523Abstract: Provided are catalyst composites whose catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. The catalyst composites have a two-metal layer on a carrier, the two-metal layer comprising a rhodium component supported by a first support comprising a refractory metal oxide component or a first ceria-zirconia composite; a palladium component supported by a second support comprising a second ceria-zirconia composite; one or more of a promoter, stabilizer, or binder; wherein the amount of the total of the first and second ceria-zirconia composites in the two-metal layer is equal to or greater than the amount of the refractory metal oxide component. Methods of making and using the same are also provided.Type: ApplicationFiled: January 17, 2014Publication date: July 24, 2014Applicants: BASF SE, BASF CorporationInventors: Mirko Arnold, Stefan Kotrel, Attilio Siani, Stephan Siemund, Thomas Schmitz, Burkhard Rabe, Gary A. Gramiccioni, Oliver Seel, Torsten Neubauer, Knut Wassermann
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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: 8617496Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline engines to treat gaseous emissions such as hydrocarbons, nitrogen oxides, and carbon monoxides. Layered three-way conversion (TWC) catalysts comprise an outer layer whose rhodium is supported by an oxygen storage component, such as a ceria-zirconia composite, and the outer layer is substantially free from alumina as a support. The rhodium-containing layer can be free of all other precious metals, such as platinum and palladium. A lower palladium layer is provided where the palladium is supported by a refractory metal oxide. The lower palladium layer can be free of rhodium and platinum and can contain an oxygen storage component that is the same or different from that in the rhodium-containing layer. Methods of making and using these catalysts are also provided.Type: GrantFiled: January 13, 2012Date of Patent: December 31, 2013Assignee: BASF CorporationInventors: Junmei Wei, Attilio Siani, Mirko Arnold, Stefan Kotrel, Stephan Siemund, Knut Wassermann
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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: 8449852Abstract: 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: GrantFiled: December 1, 2011Date of Patent: May 28, 2013Assignee: BASF CorporationInventors: Shiang Sung, Stanley A. Roth, Torsten W. Mueller-Stach, Attilio Siani
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Patent number: 8252258Abstract: Provided is a diesel oxidation catalyst for the treatment of exhaust gas emissions from a diesel engine and a method for treating a diesel exhaust gas stream, the method comprising providing a diesel oxidation catalyst and contacting said diesel exhaust gas stream with said diesel oxidation catalyst for the treatment of exhaust gas emissions. More particularly, the present invention is directed to a catalyst structure comprising three distinct layers; in which layer comprises a precious metal component such as palladium is located between two hydrocarbon storage layers comprising a molecular sieve such as a zeolite.Type: GrantFiled: January 13, 2010Date of Patent: August 28, 2012Assignee: BASF CorporationInventors: Torsten W. Müller-Stach, Torsten Neubauer, Alfred H. Punke, Gerd Grubert, Attilio Siani, Corinna Freitag
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Publication number: 20120180464Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline engines to treat gaseous emissions such as hydrocarbons, nitrogen oxides, and carbon monoxides. Layered three-way conversion (TWC) catalysts comprise an outer layer whose rhodium is supported by an oxygen storage component, such as a ceria-zirconia composite, and the outer layer is substantially free from alumina as a support. The rhodium-containing layer can be free of all other precious metals, such as platinum and palladium. A lower palladium layer is provided where the palladium is supported by a refractory metal oxide. The lower palladium layer can be free of rhodium and platinum and can contain an oxygen storage component that is the same or different from that in the rhodium-containing layer. Methods of making and using these catalysts are also provided.Type: ApplicationFiled: January 13, 2012Publication date: July 19, 2012Applicant: BASF CorporationInventors: Junmei Wei, Attilio Siani, Mirko Arnold, Stefan Kotrel, Stephan Siemund, Knut Wassermann
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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: 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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Publication number: 20110252773Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate filters are provided. Coated particle filters having washcoat loadings in the range of 1 to 4 g/ft3 result in minimal impact on back pressure while simultaneously providing TWC catalytic activity and particle trapping functionality to meet increasingly stringent regulations such as Euro 6. Sufficient to high levels of oxygen storage components (OSC) are also delivered on and/or within the filter. The filters can have a coated porosity that is substantially the same as its uncoated porosity. The TWC catalytic material can comprise a particle size distribution such that a first set of particles has a first d90 particle size of 7.Type: ApplicationFiled: April 15, 2011Publication date: October 20, 2011Applicant: BASF CorporationInventors: Mirko Arnold, Stephan Siemund, Attilio Siani, Knut Wassermann
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Publication number: 20110212008Abstract: 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: ApplicationFiled: February 22, 2011Publication date: September 1, 2011Inventors: Alfred Helmut Punke, Gerd Grubert, Yuejin Li, Ruediger Wolff, Stanley Roth, Torsten Müeller-Stach, Attilio Siani, Kenneth Voss, Torsten Neubauer
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Publication number: 20110033353Abstract: The present invention relates to a process for preparing a catalyst, at least comprising the steps of adding a protecting agent to an aqueous solution of a metal precursor to give a mixture (M1), adding a reducing agent to mixture (M1) to give a mixture (M2), adding a support material to mixture (M2) to give a mixture (M3), adjusting the pH of mixture (M3), and separating the solid and liquid phase of mixture (M3). Furthermore, the present invention relates to the catalyst as such and its use as diesel oxidation catalyst.Type: ApplicationFiled: July 27, 2010Publication date: February 10, 2011Applicant: BASF CorporationInventors: Attilio Siani, Torsten Muller-Stach, Torsten Neubauer, Xinyi Wei
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Publication number: 20100180582Abstract: Provided is a diesel oxidation catalyst for the treatment of exhaust gas emissions from a diesel engine and a method for treating a diesel exhaust gas stream, the method comprising providing a diesel oxidation catalyst and contacting said diesel exhaust gas stream with said diesel oxidation catalyst for the treatment of exhaust gas emissions. More particularly, the present invention is directed to a catalyst structure comprising three distinct layers; in which layer comprises a precious metal component such as palladium is located between two hydrocarbon storage layers comprising a molecular sieve such as a zeolite.Type: ApplicationFiled: January 13, 2010Publication date: July 22, 2010Applicant: BASF Catalysts LLCInventors: Torsten Wolfgang Mueller-Stach, Torsten Neubauer, Alfred Helmut Punke, Gerd Grubert, Attilio Siani, Corinna Freitag