Title:
IMPROVED CATALYSTS FOR GASOLINE ENGINE EXHAUST GAS TREATMENTS
Document Type and Number:
WIPO Patent Application WO/2024/067058
Kind Code:
A1
Abstract:
A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a first Nd component, wherein the first PGM component comprises platinum, and wherein the weight ratio between Nd and Pt in the first catalytic region is at least 2:1.
Inventors:
QIAO DONGSHENG (CN)
SHANG ZHOU (CN)
SHANG ZHOU (CN)
Application Number:
PCT/CN2023/118165
Publication Date:
April 04, 2024
Filing Date:
September 12, 2023
Export Citation:
Assignee:
JOHNSON MATTHEY SHANGHAI CHEMICALS LTD (CN)
International Classes:
B01D53/94; B01J23/63; B01J35/00; B01J35/57; F01N3/10
Foreign References:
| US5597771A | 1997-01-28 | |||
| US20200406234A1 | 2020-12-31 | |||
| US20080207438A1 | 2008-08-28 | |||
| US20110217216A1 | 2011-09-08 | |||
| EP1042051B1 | 2008-01-09 | |||
| EP2412437A1 | 2012-02-01 | |||
| US20150038325A1 | 2015-02-05 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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