发明名称 |
Zero platinum group metal catalysts |
摘要 |
The present invention relates improving the performance of nitrogen oxide reduction by exposing rich exhaust to catalysts systems comprising a catalyst, wherein the catalyst systems are free of platinum group metals. The present invention also relates to improving reduction of carbon monoxide and hydrocarbon in exhaust by introducing air into a portion of the exhaust between a first catalyst system and a second catalyst system. The present invention also relates to improving nitrogen oxide, carbon monoxide and hydrocarbon reduction by (1) exposing rich exhaust to a first catalysts system, wherein the exhaust has an R value of greater than 1.0 and the first catalyst system comprises a catalyst and is free of platinum group metals and (2) introducing air into a portion of the exhaust in between the first catalyst system and a second catalyst system, wherein the second catalyst system is free of platinum group metals. |
申请公布号 |
US8496896(B2) |
申请公布日期 |
2013.07.30 |
申请号 |
US20080229729 |
申请日期 |
2008.08.26 |
申请人 |
GOLDEN STEPHEN J.;HATFIELD RANDAL;NGO JOHNNY;PLESS JASON;CATALYTIC SOLUTIONS, INC.;ECS HOLDINGS, INC. |
发明人 |
GOLDEN STEPHEN J.;HATFIELD RANDAL;NGO JOHNNY;PLESS JASON |
分类号 |
B01D53/72;B01D53/56;B01D53/62 |
主分类号 |
B01D53/72 |
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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