Patents by Inventor Karifala Dumbuya
Karifala Dumbuya 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: 20240109036Abstract: The present invention relates to an exhaust gas treatment system for reducing ammonia emission from a gasoline engine comprising a three-way conversion catalyst (TWC) or a four-way conversion catalyst (FWC), further comprising an ammonia oxidation catalyst (AMOx) or a selective catalytic reduction catalyst (SCR), and a method of treating exhaust gas from a gasoline engine with an exhaust gas treatment system capable of removing ammonia.Type: ApplicationFiled: February 1, 2022Publication date: April 4, 2024Inventors: Manale Maalouf, Florian Waltz, Karifala Dumbuya, Marcus Hilgendorff, Markus Kinne, Thomas Schmitz
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Patent number: 11896962Abstract: 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 first washcoat comprising a zeolite, Pt, and first refractory metal oxide support containing manganese, a second washcoat comprising a second refractory metal oxide support, a Pt component and a Pd component, and a third washcoat comprising palladium and a rare earth oxide component is described.Type: GrantFiled: November 20, 2020Date of Patent: February 13, 2024Assignee: BASF CorporationInventors: Shiang Sung, Stanley A. Roth, Karifala Dumbuya, Susanne Stiebels, Claudia Zabel, Olga Gerlach, Andreas Sundermann
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Publication number: 20230321635Abstract: The present invention provides a catalyst composition comprising a) platinum; b) rhodium; and c) a ceria-alumina composite, a zirconia composite or a mixture thereof, wherein platinum is supported on the ceria-alumina composite, zirconia composite or mixture thereof, wherein rhodium is supported on the ceria-alumina composite, zirconia composite or mixture thereof, wherein CeO2 in the ceria alumina composite is 1.0 to 50 wt. %, based on the total weight of the ceria-alumina composite, wherein the amount of ZrO2 in the zirconia composite is 50 to 99 wt. %, based on the total weight of the zirconia composite. The present invention also provides a catalytic article comprising the catalyst composition and its preparation.Type: ApplicationFiled: September 23, 2021Publication date: October 12, 2023Inventors: Yuejin Li, Andreas Sundermann, Xiaolai Zheng, Yipeng Sun, Karifala Dumbuya, Pascaline Tran
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Patent number: 11691106Abstract: A selective catalytic reduction catalyst for the treatment of an exhaust gas stream of a passive ignition engine, the catalyst comprising a porous wall-flow filter substrate comprising an inlet end, an outlet end, a substrate axial length (w) extending between the inlet end and the outlet end, and a plurality of passages defined by porous internal walls of the porous wall flow filter substrate; wherein the catalyst further comprises a first coating, said first coating extending over x % of the substrate axial length from the inlet end toward the outlet end of the substrate, x being in the range of from 10 to 100, wherein the first coating comprises copper and an 8-membered ring pore zeolitic material; wherein the catalyst further comprises a second coating, the second coating extending over y % of the substrate axial length from the outlet end toward the inlet end of the substrate, y being in the range of from 20 to 90, wherein the second coating comprises copper, and optionally an 8-membered ring pore zeolitType: GrantFiled: October 30, 2019Date of Patent: July 4, 2023Assignee: BASF CorporationInventors: Matthias Peter, Susanne Stiebels, Karifala Dumbuya, Claudia Zabel
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Publication number: 20230191372Abstract: Disclosed herein is a catalyst for particulate combustion which is essentially free of platinum group metal compounds and the catalyst comprises a carrier and at least one metal oxide chosen from iron oxide and manganese oxide, and combinations thereof.Type: ApplicationFiled: June 30, 2021Publication date: June 22, 2023Inventors: Karifala DUMBUYA, Thomas SCHMITZ, Chunxin JI, Florian WALTZ, Stephan SIEMUND, Holger SCHWEKENDIEK
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Patent number: 11660586Abstract: A process for preparing a catalyst comprising a zeolitic material comprising copper, the process comprising (i) preparing an aqueous mixture comprising water, a zeolitic material comprising copper, a source of copper other than the zeolitic material comprising copper, and a non-zeolitic oxidic material selected from the group consisting of alumina, silica, titania, zirconia, ceria, a mixed oxide comprising one or more of Al, Si, Ti, Zr, and Ce and a mixture of two or more thereof; (ii) disposing the mixture obtained in (i) on the surface of the internal walls of a substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the substrate extending therethrough; and optionally drying the substrate comprising the mixture disposed thereon; (iii) calcining the substrate obtained in (ii).Type: GrantFiled: October 30, 2019Date of Patent: May 30, 2023Assignee: BASF CorporationInventors: Matthias Peter, Karifala Dumbuya, Miriam Schubert, Ahmad Moini, Yu Dai, Stefan Maurer, Haiyang Zhu, Yi Liu, Wen-Mei Xue, Ming-Ming Wei, Maria Heenemann
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Patent number: 11549417Abstract: The present invention relates to a selective catalytic reduction catalyst for the treatment of an exhaust gas of a diesel engine comprising: a flow-through substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the flow through substrate extending therethrough; a coating disposed on the surface of the internal walls of the substrate, wherein the coating comprises a non-zeolitic oxidic material comprising manganese and one or more of the metals of the groups 4 to 11 and 13 of the periodic table, and further comprises one or more of a vanadium oxide and a zeolitic material comprising one or more of copper and iron.Type: GrantFiled: April 23, 2019Date of Patent: January 10, 2023Assignee: BASF CorporationInventors: Marcus Hilgendorff, Karifala Dumbuya, Matthias Peter, Andreas Sundermann
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Publication number: 20220212170Abstract: The presently claimed invention provides a catalytic article and an exhaust gas treatment system. The catalytic article comprises platinum supported on a first support comprising ceria containing metal oxide component; rhodium supported on a second support selected from a refractory alumina component, an oxygen storage component or a combination thereof; and a substrate, wherein said catalytic article is essentially free of palladium. The presently claimed invention also provides a process for preparing the catalytic article and use of the catalytic article and the exhaust gas treatment system for purifying a gaseous exhaust stream comprising hydrocarbons, carbon monoxide, and nitrogen oxide.Type: ApplicationFiled: June 23, 2020Publication date: July 7, 2022Inventors: Shiang SUNG, Xiaolai ZHENG, Aleksei VJUNOV, Chunxin JI, Karifala DUMBUYA
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Publication number: 20220032277Abstract: A process for preparing a catalyst comprising a zeolitic material comprising copper, the process comprising (i) preparing an aqueous mixture comprising water, a zeolitic material comprising copper, a source of copper other than the zeolitic material comprising copper, and a non-zeolitic oxidic material selected from the group consisting of alumina, silica, titania, zirconia, ceria, a mixed oxide comprising one or more of Al, Si, Ti, Zr, and Ce and a mixture of two or more thereof; (ii) disposing the mixture obtained in (i) on the surface of the internal walls of a substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the substrate extending therethrough; and optionally drying the substrate comprising the mixture disposed thereon; (iii) calcining the substrate obtained in (ii).Type: ApplicationFiled: October 30, 2019Publication date: February 3, 2022Applicant: BASF CorporationInventors: Matthias PETER, Karifala DUMBUYA, Miriam SCHUBERT, Ahmad MOINI, Yu DAI, Stefan MAURER, Haiyang ZHU, Yi LIU, Wen-Mei XUE, Ming-Ming WEI, Maria HEENEMANN
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Patent number: 11213789Abstract: A catalyst containing a washcoat including copper or iron on a small pore molecular sieve material having a maximum ring size of eight tetrahedral atoms physically mixed with platinum and rhodium on a refractory metal oxide support including alumina, silica, zirconia, titania, and a physical mixture or a chemical combination or an atomically doped combination thereof is described. A catalyst containing a first washcoat zone substantially free of platinum group metal and including copper or iron on a small pore molecular sieve material having a maximum ring size of eight tetrahedral atoms; and a second washcoat zone including copper or iron on a small pore molecular sieve material having a maximum ring size of eight tetrahedral atoms physically mixed with platinum or platinum and rhodium on a refractory metal oxide support including alumina, silica, zirconia, titania, and a physical mixture or a chemical combination or an atomically doped combination thereof is provided.Type: GrantFiled: August 29, 2016Date of Patent: January 4, 2022Assignee: BASF CorporationInventors: Marcus Hilgendorff, Karifala Dumbuya, Claudia Zabel, Susanne Stiebels
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Publication number: 20210379530Abstract: A selective catalytic reduction catalyst for the treatment of an exhaust gas stream of a passive ignition engine, the catalyst comprising a porous wall-flow filter substrate comprising an inlet end, an outlet end, a substrate axial length (w) extending between the inlet end and the outlet end, and a plurality of passages defined by porous internal walls of the porous wall flow filter substrate; wherein the catalyst further comprises a first coating, said first coating extending over x % of the substrate axial length from the inlet end toward the outlet end of the substrate, x being in the range of from 10 to 100, wherein the first coating comprises copper and an 8-membered ring pore zeolitic material; wherein the catalyst further comprises a second coating, the second coating extending over y % of the substrate axial length from the outlet end toward the inlet end of the substrate, y being in the range of from 20 to 90, wherein the second coating comprises copper, and optionally an 8-membered ring pore zeolitType: ApplicationFiled: October 30, 2019Publication date: December 9, 2021Applicant: BASF SEInventors: Matthias PETER, Susanne STIEBELS, Karifala DUMBUYA, Claudia ZABEL
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Patent number: 11192066Abstract: The present invention relates to a process for the preparation of a catalyst for selective catalytic reduction comprising • (i) preparing a mixture comprising a metal-organic framework material comprising an ion of a metal or metalloid selected from groups 2-5, groups 7-9, and groups 11-14 of the Periodic Table of the Elements, and at least one at least monodentate organic compound, a zeolitic material containing a metal as a non-framework element, optionally a solvent system, and optionally a pasting agent, • (ii) calcining of the mixture obtained in (i); and further relates to a catalyst per se comprising a composite material containing an amorphous mesoporous metal and/or metalloid oxide and a zeolitic material, wherein the zeolitic material contains a metal as non-framework element, as well as to the use of said catalyst.Type: GrantFiled: June 7, 2017Date of Patent: December 7, 2021Assignee: BASF CorporationInventors: Natalia Trukhan, Michaela Maltry, Ulrich Mueller, Stefan Marx, Karifala Dumbuya, Mathias Feyen
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Publication number: 20210339228Abstract: The disclosure relates to a three-way conversion catalyst for the treatment of an exhaust gas comprising nitrogen monoxide, carbon monoxide, and hydrocarbon, wherein the catalyst comprises: (i) a substrate; (ii) a first coating comprising rhodium supported on a first oxidic component; (iii) a second coating comprising palladium supported on a non-zeolitic oxidic material, wherein the non-zeolitic oxidic material comprises manganese and a second oxidic component, wherein the second coating consists of 0 weight-% to 0.001 weight-% of platinum; wherein the first coating is disposed on the substrate over x % of the axial length, with x ranging from 80 to 100; wherein the second coating extends over y % of the axial length from the inlet end to the outlet end and is disposed on the first coating, with y ranging from 20 to x.Type: ApplicationFiled: September 12, 2019Publication date: November 4, 2021Applicant: BASF CorporationInventors: Karifala DUMBUYA, Thomas SCHMITZ, Florian WALTZ, Stephan SIEMUND
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Publication number: 20210172361Abstract: The present invention relates to a selective catalytic reduction catalyst for the treatment of an exhaust gas of a diesel engine comprising: a flow-through substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the flow through substrate extending therethrough; a coating disposed on the surface of the internal walls of the substrate, wherein the coating comprises a non-zeolitic oxidic material comprising manganese and one or more of the metals of the groups 4 to 11 and 13 of the periodic table, and further comprises one or more of a vanadium oxide and a zeolitic material comprising one or more of copper and iron.Type: ApplicationFiled: April 23, 2019Publication date: June 10, 2021Applicant: BASF CorporationInventors: Marcus HILGENDORFF, Karifala DUMBUYA, Matthias PETER, Andreas SUNDERMANN
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Publication number: 20210069684Abstract: 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 first washcoat comprising a zeolite, Pt, and first refractory metal oxide support containing manganese, a second washcoat comprising a second refractory metal oxide support, a Pt component and a Pd component, and a third washcoat comprising palladium and a rare earth oxide component is described.Type: ApplicationFiled: November 20, 2020Publication date: March 11, 2021Applicant: BASF CorporationInventors: Shiang Sung, Stanley A. Roth, Karifala Dumbuya, Susanne Stiebels, Claudia Zabel, Olga Gerlach, Andreas Sundermann
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Patent number: 10864502Abstract: 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 first washcoat comprising a zeolite, Pt, and first refractory metal oxide support containing manganese, a second washcoat comprising a second refractory metal oxide support, a Pt component and a Pd component, and a third washcoat comprising palladium and a rare earth oxide component is described.Type: GrantFiled: December 16, 2013Date of Patent: December 15, 2020Assignee: BASF CorporationInventors: Shiang Sung, Stanley A. Roth, Karifala Dumbuya, Susanne Stiebels, Claudia Zabel, Olga Gerlach, Andreas Sundermann
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Patent number: 10724411Abstract: A diesel oxidation catalyst, containing a washcoat containing four layers, the washcoat being disposed on a substrate, wherein the washcoat contains: a first layer containing a first platinum group metal supported on a first metal oxide support material, wherein the first layer is disposed on the substrate; a second layer containing a second platinum group metal supported on a second metal oxide support material, and containing a fifth platinum group metal, wherein the second layer is disposed on the first layer; a third layer containing a third platinum group metal supported on a third metal oxide support material and containing a zeolitic material containing Fe and containing a sixth platinum group metal; and a fourth layer containing a fourth platinum group metal and a fourth metal oxide.Type: GrantFiled: March 13, 2018Date of Patent: July 28, 2020Assignee: BASF CorporationInventors: Karifala Dumbuya, Claudia Zabel, Shiang Sung
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Publication number: 20190383184Abstract: A diesel oxidation catalyst, comprising a washcoat comprising four layers, the washcoat being disposed on a substrate, wherein the washcoat comprises a first layer comprising a first platinum group metal supported on a first metal oxide support material, which first layer is disposed on the substrate; a second layer comprising a second platinum group metal supported on a second metal oxide support material, and comprising a fifth platinum group metal, which second layer is disposed on the first layer; a third layer comprising a third platinum group metal supported on a third metal oxide support material and comprising a zeolitic material comprising Fe and comprising a sixth platinum group metal; and a fourth layer comprising a fourth platinum group metal and a fourth metal oxide; wherein the substrate has a length, a front end and a rear end; wherein the first layer is disposed on the substrate on the entire length of the substrate, wherein the second layer is disposed on the first layer on the entire lengthType: ApplicationFiled: March 13, 2018Publication date: December 19, 2019Applicant: BASF CorporationInventors: Karifala DUMBUYA, Claudia ZABEL, Shiang SUNG
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Patent number: 10328388Abstract: An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emis-sions from a diesel engine are described. More particularly, described is an oxidation catalyst composite including a first oxidation material comprising a first refractory metal oxide support, a rare earth oxide, and palladium (Pd); a second oxidation material comprising a second refractory metal oxide, and platinum (Pt) and palladium (Pd); and a protective overlayer comprising a third refractory metal oxide, platinum (Pt) and, optionally, palladium (Pd), and a molecular sieve promoted with a metal selected from one or more of Cu, Fe, Co, Ni, Mn, V, and, Ag. The oxid-ation catalyst composite is sulfur tolerant.Type: GrantFiled: July 29, 2016Date of Patent: June 25, 2019Assignee: BASF CorporationInventors: Karifala Dumbuya, Claudia Zabel, Susanne Stiebels, Shiang Sung
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Publication number: 20190143272Abstract: The present invention relates to a process for the preparation of a catalyst for selective catalytic reduction comprising• (i) preparing a mixture comprising a metal-organic framework material comprising an ion of a metal or metalloid selected from groups 2-5, groups 7-9, and groups 11-14 of the Periodic Table of the Elements, and at least one at least monodentate organic compound, a zeolitic material containing a metal as a non-framework element, optionally a solvent system, and optionally a pasting agent,• (ii) calcining of the mixture obtained in (i); and further relates to a catalyst per se comprising a composite material containing an amorphous mesoporous metal and/or metalloid oxide and a zeolitic material, wherein the zeolitic material contains a metal as non-framework element, as well as to the use of said catalyst.Type: ApplicationFiled: June 7, 2017Publication date: May 16, 2019Applicant: BASF CorporationInventors: Natalia TRUKHAN, Michaela MALTRY, Ulrich MUELLER, Stefan MARX, Karifala DUMBUYA, Mathias FEYEN