Title:
GASOLINE PARTICULATE FILTER
Document Type and Number:
WIPO Patent Application WO/2023/237053
Kind Code:
A1
Abstract:
The present invention relates to a particulate filter, which comprises a substrate comprising a plurality of porous walls extending longitudinally to form a plurality of parallel channels extending from an inlet end to an outlet end, wherein a quantity of the channels are inlet channels that are open at the inlet end and closed at the outlet end, and a quantity of channels are outlet channels that are closed at the inlet end and open at the outlet end; and a layer of inorganic particles loaded on surfaces of porous walls in the inlet channels and/or outlet channels, wherein the layer of inorganic particles comprises inorganic particles having a small BET pore volume of no more than 0.5 cm3/g. The present invention also relates to a method for producing a particulate filter which includes applying inorganic particles or precursors thereof on surfaces of porous walls in the inlet channels and/or outlet channels to deposit a layer of inorganic particles which comprises the inorganic particles having a small BET pore volume.
Inventors:
CHEN CHUNYU (CN)
WU YEHUI (CN)
SIANI ATTILIO (DE)
WANG WEILIANG (CN)
SCHMITZ THOMAS (DE)
WU YEHUI (CN)
SIANI ATTILIO (DE)
WANG WEILIANG (CN)
SCHMITZ THOMAS (DE)
Application Number:
PCT/CN2023/099160
Publication Date:
December 14, 2023
Filing Date:
June 08, 2023
Export Citation:
Assignee:
BASF CORP (US)
BASF CATALYSTS SHANGHAI CO LTD (CN)
BASF CATALYSTS SHANGHAI CO LTD (CN)
International Classes:
B01D53/94; B01D50/00; F01N3/022; F01N3/035
Domestic Patent References:
| WO2021096841A1 | 2021-05-20 | |||
| WO2022046389A1 | 2022-03-03 |
Foreign References:
| US20200191030A1 | 2020-06-18 | |||
| US20180111089A1 | 2018-04-26 | |||
| CN102574056A | 2012-07-11 | |||
| CN109715270A | 2019-05-03 | |||
| CN108350777A | 2018-07-31 |
Attorney, Agent or Firm:
ZHONGZI LAW OFFICE (CN)
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