Patents by Inventor Shahjahan Kazi
Shahjahan Kazi 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: 20230372905Abstract: The present disclosure relates to oxidation catalyst compositions for use in a close-coupled diesel oxidation catalyst (ccDOC) application, in which the ccDOC can function as a heat generator under high space velocity conditions. The oxidation catalyst compositions include a high surface area support material doped with at least one metal oxide, and a platinum group metal (PGM) supported on the doped high surface area support material.Type: ApplicationFiled: October 15, 2021Publication date: November 23, 2023Inventors: M. Shahjahan Kazi, Shiang Sung, Claire Chunjuan Zhang, Xiaolai Zheng, Sandip D. Shah, Andrew Thoms
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Publication number: 20230001386Abstract: An oxidation catalyst composition is provided, the composition including a plurality of platinum group metal particles having a multi-modal distribution of particle sizes. The plurality of platinum group metal particles includes a first population of platinum group metal particles having a range of particle sizes of from about 0.5 nm to about 3 nm, and a second population of platinum group metal particles having a range of particle sizes of from about 4 nm to about 15 nm. Methods for the preparation and use of the catalyst composition are also provided, as well as catalyst articles and emission gas treatment systems employing such catalyst articles. The catalyst exhibits enhanced stability with respect to oxidation performance after degreening and/or aging, as compared to conventional oxidation catalysts, in particular less loss of NOx oxidation performance.Type: ApplicationFiled: November 26, 2020Publication date: January 5, 2023Inventors: M Shahjahan KAZI, Andreas R. MUNDING, David M. YOUNGREN
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Patent number: 11268420Abstract: A system for treatment of an exhaust gas stream from an engine is provided, containing an upstream selective catalytic reduction (SCR) catalyst, which receives the exhaust gas stream without any intervening catalyst, a diesel oxidation catalyst (DOC) positioned downstream thereof; a catalyzed soot filter (CSF) downstream of the diesel oxidation catalyst; a second SCR catalyst positioned downstream of the catalyzed soot filter; and an ammonia oxidation (AMOx) catalyst. The application also describes use of such systems to reduce nitrogen oxides (NOx) and hydrocarbons (HC) in an exhaust gas stream.Type: GrantFiled: February 18, 2019Date of Patent: March 8, 2022Assignee: BASF CorporationInventors: Kenneth E. Voss, Kevin A. Hallstrom, Sandip D. Shah, David M. Youngren, Andrew Thoms, M. Shahjahan Kazi, Robert Dorner
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Publication number: 20210079826Abstract: A system for treatment of an exhaust gas stream from an engine is provided, containing an upstream selective catalytic reduction (SCR) catalyst, which receives the exhaust gas stream without any intervening catalyst, a diesel oxidation catalyst (DOC) positioned downstream thereof; a catalyzed soot filter (CSF) downstream of the diesel oxidation catalyst; a second SCR catalyst positioned downstream of the catalyzed soot filter; and an ammonia oxidation (AMOx) catalyst. The application also describes use of such systems to reduce nitrogen oxides (NOx) and hydrocarbons (HC) in an exhaust gas stream.Type: ApplicationFiled: February 18, 2019Publication date: March 18, 2021Inventors: Kenneth E. Voss, Kevin A. Hallstrom, Sandip D. Shah, David M. Youngren, Andrew Thoms, M. Shahjahan Kazi, Robert Dorner
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Patent number: 9333490Abstract: An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, an oxidation catalyst composite including a zoned diesel oxidation catalyst with a first washcoat zone with a Pt/Pd ratio that is less than 3:1 and a PGM loading at least twice that of a second washcoat zone.Type: GrantFiled: March 12, 2014Date of Patent: May 10, 2016Assignee: BASF CorporationInventors: M. Shahjahan Kazi, Fabien A. Rioult, Stanley A. Roth, Kenneth E. Voss
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Patent number: 9126182Abstract: Catalyzed soot filters comprising a wall flow monolith having a washcoat comprising an alkali base metal composite disposed on the monolith. Methods of manufacturing and using catalyzed soot filters and diesel engine exhaust emission treatment systems are also disclosed.Type: GrantFiled: January 30, 2012Date of Patent: September 8, 2015Assignee: BASF CorporationInventors: Michel Deeba, M. Shahjahan Kazi
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Publication number: 20140271429Abstract: An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, an oxidation catalyst composite including a zoned diesel oxidation catalyst with a first washcoat zone with a Pt/Pd ratio that is less than 3:1 and a PGM loading at least twice that of a second washcoat zone.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicant: BASF CorporationInventors: M. Shahjahan Kazi, Fabien A. Rioult, Stanley A. Roth, Kenneth E. Voss
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Publication number: 20130195741Abstract: Catalyzed soot filters comprising a wall flow monolith having a washcoat comprising an alkali base metal composite disposed on the monolith. Methods of manufacturing and using catalyzed soot filters and diesel engine exhaust emission treatment systems are also disclosed.Type: ApplicationFiled: January 30, 2012Publication date: August 1, 2013Applicant: BASF CorporationInventors: Michel Deeba, M. Shahjahan Kazi
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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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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: 20050113487Abstract: The present invention provides a substantially spherical composition comprising about 60 to 80 percent by weight peariescent pigment, 14 to about 38 percent by weight wax, and about 2 percent to 6 percent surfactant. This composition is particularly useful for extrusion into any polymer used for masterbatching. The masterbatch is then typically blow or injection molded or extruded into a finished part.Type: ApplicationFiled: November 23, 2004Publication date: May 26, 2005Inventors: Charles Willard, Stephane Rochard, Michael Venturini, Doreen Becker, Shahjahan Kazi
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Patent number: 6342464Abstract: A solid, particulate catalyst composition is provided containing an active nickel component in which the nickel constitutes from about 25 to about 60 wt % of the catalyst composition; a molybdenum component in which the molybdenum constitutes from about 5 to about 20 wt % of the catalyst composition; and a binder component comprising at least one of oxides of silica, zirconium, aluminum, zinc and calcium, each of the calcium, aluminum and zinc being present in an amount no greater than about 2 wt %, preferably about 0 to 1 wt %. The catalyst is designed for the selective hydrogenation of 3-hydroxypropanal to 1,3-propanediol in aqueous solution.Type: GrantFiled: June 14, 1999Date of Patent: January 29, 2002Assignee: Shell Oil CompanyInventors: Juan Pedro Arhancet, Paul Himelfarb, Joseph Broun Powell, Robert Alfred Plundo, Mohammed Shahjahan Kazi, William Joseph Carrick
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Patent number: 5945570Abstract: A solid, particulate catalyst composition is provided containing an active nickel component in which the nickel constitutes from about 25 to about 60 wt % of the catalyst composition; a molybdenum component in which the molybdenum constitutes from about 5 to about 20 wt % of the catalyst composition; and a binder component comprising at least one of oxides of silica, zirconium, aluminum, zinc and calcium, each of the calcium, aluminum and zinc being present in an amount no greater than about 2 wt %, preferably about 0 to 1 wt %. The catalyst is designed for the selective hydrogenation of 3-hydroxypropanal to 1,3-propanediol in aqueous solution.Type: GrantFiled: October 29, 1998Date of Patent: August 31, 1999Inventors: Juan Pedro Arhancet, Paul Himelfarb, Joseph Broun Powell, Robert Alfred Plundo, Mohammed Shahjahan Kazi, William Joseph Carrick