Invention Grant
- Patent Title: Catalyzed gasoline particulate filter
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Application No.: US17594008Application Date: 2020-04-20
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Publication No.: US12264608B2Publication Date: 2025-04-01
- Inventor: Yun Fei Qi , Jun Cong Jiang , Attilio Siani , Weiyong Tang
- Applicant: BASF MOBILE EMISSIONS CATALYSTS LLC
- Applicant Address: US NJ Iselin
- Assignee: BASF MOBILE EMISSIONS CATALYSTS LLC
- Current Assignee: BASF MOBILE EMISSIONS CATALYSTS LLC
- Current Assignee Address: US NJ Iselin
- Agency: DLA Piper LLP (US)
- Priority: WOPCT/CN2019/083641 20190422
- International Application: PCT/US2020/028937 WO 20200420
- International Announcement: WO2020/219376 WO 20201029
- Main IPC: F01N3/035
- IPC: F01N3/035 ; B01J23/42 ; B01J23/44 ; B01J23/46 ; B01J35/00 ; B01J35/40 ; B01J37/00 ; B01J37/02 ; F01N3/10

Abstract:
The present invention relates to a catalyzed particulate filter and methods comprising the filter for treatment of an exhaust gas from a gasoline engine, the catalyzed particulate filter comprising a gasoline particulate filter (GPF); a major catalytic layer coated onto or within an inlet side, an outlet side, or both sides of the GPF surfaces, the major catalytic layer comprising a first composition, wherein the first composition comprising a first support material; and a first platinum group metal (PGM); and a minor functional material layer placed onto or within an inlet side, an outlet side, or both sides of the GPF surfaces; the minor catalytic layer comprising a second composition; wherein the major catalytic layer has a higher loading than the minor functional material layer; the minor functional material layer is placed on top of the major catalytic layer, or the major catalytic material layer is placed on top of the minor functional layer. The catalyzed particulate filter provides an improved catalytic efficiency in conjunction with an efficient filter.
Public/Granted literature
- US20220154612A1 CATALYZED GASOLINE PARTICULATE FILTER Public/Granted day:2022-05-19
Information query
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