Invention Grant
- Patent Title: Selective catalytic reduction articles and systems
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Application No.: US16323145Application Date: 2017-08-04
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Publication No.: US11448110B2Publication Date: 2022-09-20
- Inventor: Wen-Mei Xue , Jeff H. Yang , Stanley A. Roth , Kenneth E. Voss , Sandip D. Shah , Jaya L. Mohanan
- 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
- International Application: PCT/IB2017/054804 WO 20170804
- International Announcement: WO2018/025245 WO 20180208
- Main IPC: F01N3/20
- IPC: F01N3/20 ; B01J29/072 ; B01J37/02 ; B01J37/08 ; B01J35/00 ; B01J29/76 ; B01D53/94 ; B01J29/06 ; B01J29/068 ; B01J29/80 ; B01J29/72 ; B01J29/74 ; B01J29/00 ; B01J29/54 ; B01J29/56 ; B01J37/30

Abstract:
Certain selective catalytic reduction (SCR) articles, systems and methods provide for high NOx conversion while at the same time low N2O formation. The articles, systems and methods are suitable for instance for the treatment of exhaust gas of diesel engines. Certain articles have zoned coatings containing copper-containing molecular sieves disposed thereon, where for example a concentration of catalytic copper in an upstream zone is lower than the concentration of catalytic copper in a downstream zone.
Public/Granted literature
- US20190170042A1 SELECTIVE CATALYTIC REDUCTION ARTICLES AND SYSTEMS Public/Granted day:2019-06-06
Information query
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