- 专利标题: ASC/DEC with rear-concentrated exotherm generation
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申请号: US15939357申请日: 2018-03-29
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公开(公告)号: US10807040B2公开(公告)日: 2020-10-20
- 发明人: Hai-Ying Chen , Joseph Michael Fedeyko , Jing Lu
- 申请人: Johnson Matthey Public Limited Company
- 申请人地址: GB London
- 专利权人: Johnson Matthey Public Limited Company
- 当前专利权人: Johnson Matthey Public Limited Company
- 当前专利权人地址: GB London
- 主分类号: B01J21/06
- IPC分类号: B01J21/06 ; B01J23/22 ; B01J23/30 ; B01J23/42 ; B01J23/44 ; B01J23/648 ; B01J23/652 ; F01N3/035 ; F01N3/20 ; B01D53/58 ; B01D53/94
摘要:
A catalyst article including a substrate with an inlet side and an outlet side, a first zone and a second zone, where the first zone includes an ammonia slip catalyst (ASC) comprising a platinum group metal on a support and a first SCR catalyst; where the second zone includes a catalyst selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); and where the first zone is located upstream of the second zone. The first zone may include a bottom layer with a blend of: (1) the platinum group metal on a support and (2) the first SCR catalyst; and a top layer comprising a second SCR catalyst, the top layer located over the bottom layer.
公开/授权文献
- US20180280876A1 ASC/DEC WITH REAR-CONCENTRATED EXOTHERM GENERATION 公开/授权日:2018-10-04