发明申请
- 专利标题: SINGLE OR DUAL LAYER AMMONIA SLIP CATALYST
- 专利标题(中): 单层或双层AMMONIA SLIP催化剂
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申请号: US15184267申请日: 2016-06-16
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公开(公告)号: US20160367938A1公开(公告)日: 2016-12-22
- 发明人: Mikael Larsson , David Micallef , Jing Lu
- 申请人: Johnson Matthey Public Limited Company
- 主分类号: B01D53/94
- IPC分类号: B01D53/94 ; B01J35/04 ; B01J35/00 ; B01J29/072 ; B01J29/80 ; B01J23/42 ; B01J29/76 ; B01J29/78 ; B01J23/22
摘要:
A catalyst article having an extruded support having a plurality of channels through which exhaust gas flows during operation of an engine, and a single layer coating or a bi-layer coating on the support, where the extruded support contains a third SCR catalyst, the single layer coating and the bilayer-coating contain platinum on a support with low ammonia storage and a first SCR catalyst. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods for producing such articles are described. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
公开/授权文献
- US09789441B2 Single or dual layer ammonia slip catalyst 公开/授权日:2017-10-17