发明申请
US20150190787A1 SELECTIVE CATALYTIC REDUCTION WALL FLOW FILTER INCOPORATING A VANADATE
有权
选择性催化还原壁流过滤器增加一个VANADATE
- 专利标题: SELECTIVE CATALYTIC REDUCTION WALL FLOW FILTER INCOPORATING A VANADATE
- 专利标题(中): 选择性催化还原壁流过滤器增加一个VANADATE
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申请号: US14404763申请日: 2013-05-31
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公开(公告)号: US20150190787A1公开(公告)日: 2015-07-09
- 发明人: Kaneshalingam Arulraj , Ralf Dotzel , Rainer Leppelt , Jorg Werner Muench , Alexandra Tsami Goodwin , Gudmund Smedler
- 申请人: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
- 国际申请: PCT/IB2013/001133 WO 20130531
- 主分类号: B01J23/847
- IPC分类号: B01J23/847 ; B01J21/06 ; B01J27/24 ; B01J21/16 ; B01J21/08 ; B01D53/94 ; B01J23/30
摘要:
A filter incorporates a catalyst for the Selective Catalytic Reduction (SCR) of NOx gases and removal of particulate matter from the exhaust gas of a lean burn combustion engine, wherein the catalyst includes a vanadate component having an alkaline earth metal, a transition metal, a rare earth metal, or combinations thereof. The vanadate component may be iron vanadate. The filter includes a supported vanadate component disposed on a wall-flow filter. The method of making the filter includes applying an aqueous mixture of the supported vanadate component as a washcoat on the wall-flow filter or extruding a composition containing the supported vanadate component. The method of treating exhaust gases from an engine includes contacting the exhaust gas with the catalyst including the vanadate component.
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