发明名称 |
CATALYST MATERIALS FOR AMMONIA OXIDATION IN LEAN-BURN ENGINE EXHAUST |
摘要 |
An exhaust aftertreatment system and a method for treating exhaust produced by a lean-burn engine are provided. The exhaust aftertreatment system may include an exhaust gas treatment subsystem and a clean-up oxidation catalyst located downstream of the exhaust gas treatment subsystem. The clean-up oxidation catalyst can selectively oxidize NH3 to N2 in the hot, oxygen-abundant exhaust flow emanated from the lean-burn engine and passed through the exhaust gas treatment subsystem to help prevent ammonia slip to the atmosphere. The clean-up oxidation catalyst comprises perovskite oxide particles and/or manganese-containing mixed metal oxide particles dispersed on a selective catalytic reduction (SCR) catalyst.
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申请公布号 |
US2012042631(A1) |
申请公布日期 |
2012.02.23 |
申请号 |
US20100860180 |
申请日期 |
2010.08.20 |
申请人 |
SCHMIEG STEVEN J.;LI WEI;KIM CHANG H.;QI GONGSHIN;GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
SCHMIEG STEVEN J.;LI WEI;KIM CHANG H.;QI GONGSHIN |
分类号 |
F01N3/00;F01N3/035;F01N3/10 |
主分类号 |
F01N3/00 |
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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