发明名称 |
Catalyst arrangement and method of purifying the exhaust gas of internal combustion engines operated under lean conditions |
摘要 |
The invention relates to a catalyst arrangement for purifying the exhaust gases of internal combustion engines operated under lean conditions. It is proposed that a thinwalled, porous carrier be coated on one side with a nitrogen oxide storage catalyst and on the other side with an SCR catalyst. When the exhaust gas is passed through the catalytic coatings and the support material, a significant improvement in the nitrogen oxide conversion is achieved compared to a series arrangement of the catalysts on separate carriers. Wall flow filters have been found to be useful as thin-walled carriers.
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申请公布号 |
US2007110650(A1) |
申请公布日期 |
2007.05.17 |
申请号 |
US20040567204 |
申请日期 |
2004.07.29 |
申请人 |
UMICORE AG & CO. KG |
发明人 |
PFEIFER MARCUS;SOEGER NICOLA;DEMEL YVONNE;KUHL TOBIAS;SPURK PAUL C.;GIESHOFF JURGEN;LOX EGBERT;KREUZER THOMAS |
分类号 |
B01D50/00;B01D53/94;F01N3/035;F01N3/08;F01N3/28 |
主分类号 |
B01D50/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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