| 发明名称 |
Small Pore Molecular Sieve Supported Copper Catalysts Durable Against Lean/Rich Aging for the Reduction of Nitrogen Oxides |
| 摘要 |
Provided is a system for treating a flowing exhaust gas comprising a lean NOx trap, a catalyzed soot filter, an ammonia or an ammonia precursor metering system for metering ammonia or an ammonia precursor into the flowing exhaust gas; and an SCR catalyst, wherein the SCR catalyst is disposed downstream of the lean NOx trap and comprises copper and/or iron supported on a small pore molecular sieve. |
| 申请公布号 |
US2016038876(A1) |
申请公布日期 |
2016.02.11 |
| 申请号 |
US201514918725 |
申请日期 |
2015.10.21 |
| 申请人 |
Johnson Matthey Public Limited Company |
发明人 |
Andersen Paul Joseph;CHEN Hai-Ying;FEDEYKO Joseph Michael;Weigert Erich |
| 分类号 |
B01D53/94;B01D53/86;B01D53/56 |
主分类号 |
B01D53/94 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A system for treating a flowing exhaust gas comprising:
(a) a lean NOx trap; (b) a catalyzed soot filter; (c) an ammonia or an ammonia precursor metering system for metering ammonia or an ammonia precursor into the flowing exhaust gas; and (d) an SCR catalyst, wherein the SCR catalyst is disposed downstream of the lean NOx trap and comprises copper and/or iron supported on a small pore molecular sieve. |
| 地址 |
London GB |
