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公开(公告)号:US20230073880A1
公开(公告)日:2023-03-09
申请号:US17759291
申请日:2021-01-22
Applicant: BASF CORPORATION
Inventor: Andreas R. Munding , Sandip D. Shah , Kai Schmitz , Yi Liu , Donald H. Reeder , Brian T. Jones , Eric George Klauber , James Dale Hoggard , Yogeshkumar Patel
Abstract: This disclosure relates to devices and methods for coating various portions of catalyst support bodies, such as radially-zoned catalyst support bodies, such as those used in catalytic converters for treating exhaust gas streams of internal combustion engines.
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公开(公告)号:US11872542B2
公开(公告)日:2024-01-16
申请号:US17626135
申请日:2020-07-09
Applicant: BASF CORPORATION
Inventor: Weiyong Tang , Sandip D. Shah , Andreas R. Munding , Fabien A. Rioult , Ramesh Murlidhar Kakwani
CPC classification number: B01J23/44 , B01J21/04 , B01J23/42 , F01N3/2066 , F01N2570/10 , F01N2570/12 , F01N2570/14
Abstract: A catalyst article is provided including a substrate including a plurality of passageways, and further including a first and a second oxidation region including a first and a second subset of said plurality of passageways. A first catalyst composition is coating at least a portion of each passageway of the first oxidation region and positioned as a sole PGM-containing catalyst layer, or a zoned portion thereof, or as a top PGM-containing catalyst layer, or a zoned portion thereof, in the first oxidation region. A second catalyst composition is coating at least a portion of each passageway of the second oxidation region and positioned as a sole PGM-containing catalyst layer, or a zoned portion thereof, or as a top PGM-containing catalyst layer, or a zoned portion thereof, in the second oxidation region. The Pt:Pd weight ratio is greater in the first catalyst composition than in the second catalyst composition.
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公开(公告)号:US20220258137A1
公开(公告)日:2022-08-18
申请号:US17626135
申请日:2020-07-09
Applicant: BASF CORPORATION
Inventor: Weiyong Tang , Sandip D. Shah , Andreas R. Munding , Fabien A. Rioult , Ramesh Murlidhar Kakwani
Abstract: A catalyst article is provided including a substrate including a plurality of passageways, and further including a first and a second oxidation region including a first and a second subset of said plurality of passageways. A first catalyst composition is coating at least a portion of each passageway of the first oxidation region and positioned as a sole PGM-containing catalyst layer, or a zoned portion thereof, or as a top PGM-containing catalyst layer, or a zoned portion thereof, in the first oxidation region. A second catalyst composition is coating at least a portion of each passageway of the second oxidation region and positioned as a sole PGM-containing catalyst layer, or a zoned portion thereof, or as a top PGM-containing catalyst layer, or a zoned portion thereof, in the second oxidation region. The Pt:Pd weight ratio is greater in the first catalyst composition than in the second catalyst composition.
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