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Title:
CATALYTIC ARTICLE COMPRISING AMMONIA OXIDATION CATALYST
Document Type and Number:
WIPO Patent Application WO/2024/008077
Kind Code:
A1
Abstract:
A catalytic article for treating an exhaust stream, which comprises -a substrate, -a coating layer, comprising a first catalyst containing a precious metal component and a second catalyst containing a molecular sieve component, in a first coating configuration; or -a substrate, -a first coating layer, which comprises a first catalyst containing a precious metal component, and -a second coating layer, which covers at least part of the first coating layer and comprises a second catalyst containing a molecular sieve component, in a second coating configuration; wherein the coating layer in the first coating configuration or the second coating layer in the second coating configuration has inter-particle pores at a pore ratio of 5.7% or more respectively. It also relates to a process for preparing the catalytic article by using a pore-forming agent in the slurry for depositing a coaing layer, and to a system for treating an exhaust stream comprising the catalytic article.

Inventors:
HAO YUFEN (CN)
ZHANG JIADI (CN)
WU DONGLIANG (CN)
WEI MINGMING (CN)
DAI YU (CN)
WU XIUHUA (CN)
Application Number:
PCT/CN2023/105719
Publication Date:
January 11, 2024
Filing Date:
July 04, 2023
Export Citation:
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Assignee:
BASF CORP (US)
BASF CHINA CO LTD (CN)
International Classes:
B01J29/74; B01J29/44; B01J37/02
Foreign References:
CN110475611A2019-11-19
CN107427824A2017-12-01
CN102216582A2011-10-12
CN102985655A2013-03-20
CN110022975A2019-07-16
CN110494205A2019-11-22
CN114073949A2022-02-22
CN108883406A2018-11-23
US20110286900A12011-11-24
Attorney, Agent or Firm:
ZHONGZI LAW OFFICE (CN)
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