Invention Grant
- Patent Title: Monometallic rhodium-containing four-way conversion catalysts for gasoline engine emissions treatment systems
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Application No.: US16323148Application Date: 2017-07-25
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Publication No.: US11185819B2Publication Date: 2021-11-30
- Inventor: Janosch Cravillon , Stephan Siemund , Attilio Siani , Thomas Schmitz , Markus Kinne
- Applicant: BASF CORPORATION
- Applicant Address: US NJ Florham Park
- Assignee: BASF CORPORATION
- Current Assignee: BASF CORPORATION
- Current Assignee Address: US NJ Florham Park
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Priority: EP16182969 20160805
- International Application: PCT/EP2017/068775 WO 20170725
- International Announcement: WO2018/024546 WO 20180208
- Main IPC: B01J21/04
- IPC: B01J21/04 ; B01J23/12 ; B01J23/46 ; B01J23/63 ; B01J35/00 ; B01J35/04 ; B01J35/10 ; F01N3/035 ; F01N3/10 ; B01D53/94 ; B01J37/02

Abstract:
Catalyzed particulate filters comprise three-way conversion (TWC) catalytic material, which comprises rhodium as the only platinum group metal, that permeates walls of a particulate filter. Such catalyzed particulate filters may be located downstream of close-coupled three-way conversion (TWC) composites in an emission treatment system downstream of a gasoline direct injection engine for treatment of an exhaust stream comprising hydrocarbons, carbon monoxide, nitrogen oxides, and particulates.
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