发明名称 |
Structured catalysts for selective reduction of nitrogen oxides by ammonia using a compound that can be hydrolyzed to ammonia |
摘要 |
A structured catalyst for selective reduction of nitrogen oxides with ammonia using an ammonia-supplying compound. The catalyst is preferably used for exhaust gas treatment of diesel vehicles powered by diesel motors. The catalyst is characterized by the fact that it contains a reduction catalyst for selective reduction of nitrogen oxides with ammonia and a hydrolysis catalyst for the hydrolysis of urea, where the hydrolysis catalyst is applied in the form of a coating onto the reduction catalyst. By this arrangement of the two catalytic functions in one catalyst the exhaust gas system can be made very compactly and space saving. Moreover, advantageous synergistic effects result from the direct contact of the hydrolysis catalyst and the reduction catalyst.
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申请公布号 |
US2002025905(A1) |
申请公布日期 |
2002.02.28 |
申请号 |
US20010851417 |
申请日期 |
2001.05.09 |
申请人 |
HARRIS MICHAEL;LEYRER JURGEN;DEMEL YVONNE;LOX EGBERT;KREUZER THOMAS |
发明人 |
HARRIS MICHAEL;LEYRER JURGEN;DEMEL YVONNE;LOX EGBERT;KREUZER THOMAS |
分类号 |
F01N3/08;B01D53/86;B01D53/94;B01J21/06;B01J23/20;B01J23/28;B01J23/30;B01J29/24;B01J29/46;B01J35/02;B01J35/04;F01N3/10;F01N3/20;F01N3/28;(IPC1-7):B01J23/70;B01J27/00 |
主分类号 |
F01N3/08 |
代理机构 |
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