Title:
LAYERED CATALYTIC ARTICLE
Document Type and Number:
WIPO Patent Application WO/2022/222962
Kind Code:
A1
Abstract:
The present invention relates to a layered catalytic article, particularly useful for three-way conversion, which comprises a) a top layer comprising a palladium (Pd) component, a platinum (Pt) component and a rhodium (Rh) component, wherein the palladium component, the platinum component and the rhodium component are present in supported forms, and wherein at least part of the platinum component and at least part of the rhodium component are supported together on one or more supports; b) a bottom layer comprising a palladium component in a supported form as the only platinum group metal component; and c) a substrate, on which the top layer and bottom layer are carried, wherein the palladium components are loaded in the top layer and in the bottom layer at a ratio of higher than 1 : 1, calculated as palladium element., and also to an exhaust treatment system comprising the same.
Inventors:
WANG WEILIANG (CN)
ZHENG XIAOLAI (US)
CHEN CHUNYU (CN)
SIANI ATTILIO (DE)
TRAN PASCALINE (US)
ZHENG XIAOLAI (US)
CHEN CHUNYU (CN)
SIANI ATTILIO (DE)
TRAN PASCALINE (US)
Application Number:
PCT/CN2022/087933
Publication Date:
October 27, 2022
Filing Date:
April 20, 2022
Export Citation:
Assignee:
BASF CORP (US)
BASF CHINA CO LTD (CN)
BASF CHINA CO LTD (CN)
International Classes:
B01J23/46; B01D53/94
Domestic Patent References:
| WO2020190994A1 | 2020-09-24 | |||
| WO2013021395A1 | 2013-02-14 | |||
| WO2020263810A1 | 2020-12-30 |
Foreign References:
| US20150266014A1 | 2015-09-24 |
Attorney, Agent or Firm:
ZHONGZI LAW OFFICE (CN)
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