- 专利标题: PARTICULATE FILTER HAVING PARTIALLY COATED CATALYTIC LAYER
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申请号: PCT/CN2022/111444申请日: 2022-08-10
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公开(公告)号: WO2023016489A1公开(公告)日: 2023-02-16
- 发明人: ELLMERS, Inga , WALTZ, Florian , JIANG, Juncong , SIANI, Attilio , SIEMUND, Stephan , SCHMITZ, Thomas
- 申请人: BASF CORPORATION , BASF (CHINA) COMPANY LIMITED
- 申请人地址: 100 Park Avenue; No. 300, Jiang Xin Sha Road, Pudong District
- 专利权人: BASF CORPORATION,BASF (CHINA) COMPANY LIMITED
- 当前专利权人: BASF CORPORATION,BASF (CHINA) COMPANY LIMITED
- 当前专利权人地址: 100 Park Avenue; No. 300, Jiang Xin Sha Road, Pudong District
- 代理机构: ZHONGZI LAW OFFICE
- 优先权: CNPCT/CN2021/112033 2021-08-11
- 主分类号: B01D53/94
- IPC分类号: B01D53/94 ; F01N3/022
摘要:
A catalyzed particulate filter for exhaust gas from an internal combustion engine, comprising: a particulate filter of total length L; a first catalytic layer coated onto the particulate filter, comprising a first composition, wherein the first composition comprising a first support material; and a first platinum group metal and/or a first catalytic active transitional metal; a second catalytic layer coated onto the particulate filter, comprising a second composition, wherein the second composition comprises a second support material; and said first catalytic layer is present on a portion of said particulate filter, and extends from either upstream or downstream end in axial direction of said particulate filter for a length L1, and L1 is in the range from 20 to 90% of L.
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