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Title:
NOVEL MULTI-REGION TWC FOR TREATMENT OF EXHAUST GAS FROM GASOLINE ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/109999
Kind Code:
A1
Abstract:
Disclosed are a three-way catalyst product, and the use thereof in an exhaust system for an internal combustion engine. The catalyst product for exhaust gas treatment contains: a carrier comprising an inlet end and an outlet end and having an axial length L; a first catalytic region starting from the inlet end and extending by a length less than the axial length L, wherein the first catalytic region contains a first palladium component; a second catalytic region starting from the outlet end and extending by a length less than the axial length L, wherein the second catalytic region contains a second palladium component; and a third catalytic region starting from the outlet end and extending by a length less than the axial length L, wherein the third catalytic region contains a third rhodium component, and the third catalytic region is stacked on the second catalytic region.

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Inventors:
JI HONGYU (CN)
QIAO DONGSHENG (CN)
ZHENG XIANG (CN)
Application Number:
PCT/CN2018/119728
Publication Date:
June 13, 2019
Filing Date:
December 07, 2018
Export Citation:
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Assignee:
JOHNSON MATTHEY SHANGHAI CHEMICAL LTD (CN)
International Classes:
B01J23/42; B01D53/94; B01J21/06; B01J23/46
Foreign References:
CN101528347A2009-09-09
CN104937225A2015-09-23
US20010053340A12001-12-20
CN101224423A2008-07-23
CN107206358A2017-09-26
US6022825A2000-02-08
US9352279B22016-05-31
US9040003B22015-05-26
US20160228818A12016-08-11
Other References:
See also references of EP 3721990A4
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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