- 专利标题: Diesel oxidation catalysts for ultralow NOx control
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申请号: US17250103申请日: 2019-05-29
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公开(公告)号: US11413607B2公开(公告)日: 2022-08-16
- 发明人: Jia Cheng Liu , Evan Vincent Miu , Xiaoming Xu , Xinyi Wei , Stefan Maurer
- 申请人: BASF Corporation
- 申请人地址: US NJ Florham Park
- 专利权人: BASF Corporation
- 当前专利权人: BASF Corporation
- 当前专利权人地址: US NJ Florham Park
- 代理机构: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- 国际申请: PCT/IB2019/054454 WO 20190529
- 国际公布: WO2019/229675 WO 20191205
- 主分类号: B01D53/94
- IPC分类号: B01D53/94 ; B01J29/67 ; B01J29/74 ; B01J35/00 ; B01J35/02 ; B01J35/04 ; B01J35/10 ; B01J37/00 ; B01J37/03 ; F01N3/28
摘要:
The present disclosure is directed to a Low Temperature NOx-Absorber (LT-NA) catalyst composition which exhibits NOx adsorption in a broad temperature and space velocity range, and shifts NOx desorption to a desired temperature range. In particular, the LT-NA composition includes a large pore zeolite containing a palladium component and a small or medium pore zeolite containing a palladium component. Further provided is a catalyst article including the LT-NA catalyst composition, an emission treatment system for treating an exhaust gas including the catalyst article, and methods for reducing a NOx level in an exhaust gas stream using the catalyst article.
公开/授权文献
- US20210213434A1 DIESEL OXIDATION CATALYSTS FOR ULTRALOW NOx CONTROL 公开/授权日:2021-07-15
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