发明授权
- 专利标题： Catalyzed soot filter
- 专利标题（中）： 催化烟灰过滤器
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申请号： US13031808申请日： 2011-02-22
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公开(公告)号： US08858904B2公开(公告)日： 2014-10-14
- 发明人: Alfred Helmut Punke , Gerd Grubert , Yuejin Li , Ruediger Wolff , Stanley Roth , Torsten Müller-Stach , Attilio Siani , Kenneth Voss , Torsten Neubauer
- 申请人： Alfred Helmut Punke , Gerd Grubert , Yuejin Li , Ruediger Wolff , Stanley Roth , Torsten Müller-Stach , Attilio Siani , Kenneth Voss , Torsten Neubauer
- 申请人地址： US NJ Florham Park
- 专利权人： BASF Corporation
- 当前专利权人： BASF Corporation
- 当前专利权人地址： US NJ Florham Park
- 代理商 Melanie L. Brown
- 主分类号： B01D53/56
- IPC分类号： B01D53/56 ; B01D53/94 ; B01J8/02 ; C01B21/00 ; C01B23/00 ; C01B25/00 ; C01B31/00 ; C01B33/00 ; C01B35/00 ; C01G28/00 ; C01G30/00 ; B01D50/00 ; B01D53/34 ; B01J23/00 ; B01J21/00 ; F01N3/035 ; F01N3/10 ; F01N13/02
摘要：
Described is a catalyzed soot filter wherein the inlet coating of the filter comprises an oxidation catalyst comprising platinum (Pt) and optionally palladium (Pd), wherein the outlet coating of the filter comprises an oxidation catalyst comprising Pd and optionally Pt, wherein the Pt concentration in the outlet coating is lower than the Pt concentration in the inlet coating and wherein the weight ratio of Pt:Pd in the outlet coating is in the range of from 0:1 to 2:1; and wherein the inlet coating and the outlet coating are present on the wall flow substrate at a coating loading ratio in the range of from 0.5 to 1.5, calculated as ratio of the loading of the inlet coating (in g/inch3 (g/(2.54 cm)3)):loading of the outlet coating (in g/inch3 (g/(2.54 cm)3)). Systems include such catalyzed soot filters, methods of diesel engine exhaust gas treatment and methods of manufacturing catalyzed soot filters are also described.
公开/授权文献
- US20110212008A1 Catalyzed Soot Filter 公开/授权日：2011-09-01