- 专利标题: Selective catalytic reduction wall flow filter incorporating a vanadate
-
申请号: US14404763申请日: 2013-05-31
-
公开(公告)号: US09987619B2公开(公告)日: 2018-06-05
- 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
- 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
- 国际申请: PCT/IB2013/001133 WO 20130531
- 国际公布: WO2013/179129 WO 20131205
- 主分类号: B01J23/847
- IPC分类号: B01J23/847 ; B01D53/94 ; B01J37/04 ; B01J37/08 ; B01J35/04 ; B01J37/00 ; B01J37/02 ; B01J21/06 ; B01J21/08 ; B01J21/16 ; B01J23/30 ; B01J27/24 ; B01J35/00 ; B01J23/00 ; F01N3/20 ; F01N3/035
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.
公开/授权文献
信息查询