发明申请
- 专利标题： NOx ADSORBER CATALYST, METHODS AND SYSTEMS
- 专利标题（中）： NOx吸附催化剂，方法和系统
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申请号： PCT/US2016/020605申请日： 2016-03-03
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公开(公告)号： WO2016141140A1公开(公告)日： 2016-09-09
- 发明人: GRUBERT, Gerd , NEUBAUER, Torsten , PUNKE, Alfred H. , HILGENDORFF, Marcus
- 申请人： BASF CORPORATION
- 申请人地址： 100 Park Avenue Florham Park, New Jersey 07932 US
- 专利权人： BASF CORPORATION
- 当前专利权人： BASF CORPORATION
- 当前专利权人地址： 100 Park Avenue Florham Park, New Jersey 07932 US
- 代理机构： WHITNEY, Karen M.
- 优先权： US62/127,406 20150303
- 主分类号： B01D53/54
- IPC分类号： B01D53/54 ; B01J21/04 ; F01N3/022
摘要：
A lean burn engine exhaust treatment articles comprising a low temperature lean NO x trap (LT-LNT) composition and methods for their use is disclosed. A lean burn engine exhaust gas treatment system including the lean burn engine exhaust treatment articles is also disclosed. The low temperature lean NO x trap (LT-LNT) compositions can comprise a washcoat layer on a carrier substrate, the washcoat layer including a platinum group metal component impregnated on a first support material comprising at least 50% alumina. The washcoat layer may further include a low temperature NO x storage material comprising a bulk particulate reducible metal oxide. Methods of monitoring the aging state of a lean burn oxidation catalyst in a lean burn engine catalyst system are also disclosed.
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