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公开(公告)号:US20180264446A1
公开(公告)日:2018-09-20
申请号:US15925806
申请日:2018-03-20
发明人: Garry Adam BURGESS , Guy Richard CHANDLER , Keith Anthony FLANAGAN , David MARVELL , Paul Richard PHILLIPS
IPC分类号: B01J29/76 , B01J35/04 , B01J35/00 , B01J23/42 , B01J23/888 , B01J37/02 , B01D53/94 , F01N3/20 , F01N3/022 , F01N3/035 , F01N3/28 , F01N13/00
CPC分类号: B01J29/763 , B01D53/9418 , B01D53/9436 , B01D53/9468 , B01D53/9472 , B01D2255/1021 , B01D2255/20746 , B01D2255/2092 , B01D2255/50 , B01D2255/502 , B01D2255/9022 , B01D2255/9032 , B01D2255/9035 , B01D2255/9155 , B01J23/42 , B01J23/888 , B01J35/0006 , B01J35/04 , B01J37/024 , F01N3/0222 , F01N3/035 , F01N3/2066 , F01N3/28 , F01N13/0093 , F01N2330/06 , F01N2370/04 , F01N2610/02
摘要: A catalytic wall-flow monolith filter for use in an emission treatment system comprises a wall flow monolith comprising a porous substrate having surfaces that define the channels and having a first zone extending in the longitudinal direction from a first end face towards a second end face for a distance less than the filter length and a second zone extending in the longitudinal direction from the second end face towards the first end face and extending in the longitudinal direction for a distance less than the filter length, wherein a first SCR catalyst is distributed throughout the first zone of the porous substrate, an ammonia oxidation catalyst is distributed throughout the second zone of the porous substrate and a second SCR catalyst is located in a layer that covers the surfaces in the second zone of the porous substrate.
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公开(公告)号:US20180266290A1
公开(公告)日:2018-09-20
申请号:US15925808
申请日:2018-03-20
发明人: Garry Adam BURGESS , Guy Richard CHANDLER , Keith Anthony FLANAGAN , James GOOGAN , David MARVELL , Paul Richard PHILLIPS
CPC分类号: F01N3/035 , B01D53/9418 , B01D53/9468 , B01D53/9472 , B01D2251/206 , B01D2255/20746 , B01D2255/50 , B01D2255/9022 , B01D2255/9032 , B01D2255/9035 , B01D2255/9037 , B01D2255/9155 , B01J29/763 , B01J35/04 , F01N3/2066 , F01N3/2828 , F01N2330/06 , F01N2370/04 , F01N2370/24 , F01N2510/063 , F01N2510/0684
摘要: A catalytic wall-flow monolith filter for use in an emission treatment system comprises a wall flow monolith comprising a porous substrate having surfaces that define the channels and having a first zone extending in the longitudinal direction from a first end face towards a second end face for a distance less than the filter length and a second zone downstream of the first zone, wherein a first SCR catalyst is distributed throughout the first zone of the porous substrate, and a second SCR catalyst is located on a layer that covers the surfaces in the second zone of the porous substrate. Systems and methods of using the filter in treating exhaust gases are described.
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