Invention Grant
- Patent Title: Exhaust gas treatment catalysts
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Application No.: US15752968Application Date: 2016-08-18
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Publication No.: US10906032B2Publication Date: 2021-02-02
- Inventor: Xiaolai Zheng , Michel Deeba , Xiaofan Yang , Qi Fu , Knut Wassermann , Makoto Nagata , Yasuharu Kanno , Hiroki Nakayama
- Applicant: BASF Corporation , N.E. Chemcat Corporation
- Applicant Address: US NJ Florham Park; JP Tokyo
- Assignee: BASF Corporation,N.E. Chemcat Corporation
- Current Assignee: BASF Corporation,N.E. Chemcat Corporation
- Current Assignee Address: US NJ Florham Park; JP Tokyo
- Agency: Womble Bond Dickinson (US) LLP
- International Application: PCT/US2016/047560 WO 20160818
- International Announcement: WO2017/034920 WO 20170302
- Main IPC: B01J29/85
- IPC: B01J29/85 ; B01J29/76 ; B01J23/755 ; B01J23/10 ; B01J23/745 ; B01J21/06 ; B01J35/00 ; B01J35/04 ; B01J37/30 ; B01J37/08 ; B01J37/02 ; B01D53/94 ; F01N3/20 ; F01N3/28 ; F01N3/10 ; F01N13/00 ; B01J23/00 ; B01J23/63 ; B01J23/83 ; B01J35/10 ; B01J29/072

Abstract:
Described are catalysts effective to abate NOx, hydrocarbons, and carbon monoxide from a gasoline engine exhaust gas. Such catalysts include a substrate having a first and second material disposed thereon, the first material effective to catalyze selective catalytic reduction of nitrogen oxides in the presence of ammonia and the second material effective to abate hydrocarbons and carbon monoxide, the first material comprising a molecular sieve promoted with copper and/or iron in a low loading, the second material comprising at least one oxide of Ni, Fe, Mn, Co, and Cu on a support selected from oxides of Ce, Ce—Zr, Zr, Mn, Pr and combinations thereof. Also described are gasoline engine exhaust gas treatment systems and methods of treating exhaust gas from a gasoline engine.
Public/Granted literature
- US20180229224A1 EXHAUST GAS TREATMENT CATALYSTS Public/Granted day:2018-08-16
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