| 发明名称 |
Selective catalytic reduction catalyst system |
| 摘要 |
Described are SCR catalyst systems comprising a first SCR catalyst composition and a second SCR catalyst composition arranged in the system, the first SCR catalyst composition promoting higher N2 formation and lower N2O formation than the second SCR catalyst composition, and the second SCR catalyst composition having a different composition than the first SCR catalyst composition, the second SCR catalyst composition promoting lower N2 formation and higher N2O formation than the first SCR catalyst composition. The SCR catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant. |
| 申请公布号 |
US9017626(B2) |
申请公布日期 |
2015.04.28 |
| 申请号 |
US201414208817 |
申请日期 |
2014.03.13 |
| 申请人 |
BASF Corporation |
发明人 |
Tang Weiyong;Mohanan Jaya L. |
| 分类号 |
B01D53/94;F01N3/10;F01N3/24;B01J21/06;B01J23/22;B01J23/30;B01J23/00;B01J23/745;B01J29/06;B01J29/072;B01J29/70;B01J29/76;F01N3/20 |
主分类号 |
B01D53/94 |
| 代理机构 |
|
代理人 |
Brown Melanie |
| 主权项 |
1. A selective catalytic reduction (SCR) catalyst system comprising a first SCR catalyst composition and a second SCR catalyst composition arranged in the system, the first SCR catalyst composition promoting higher N2 formation and lower N2O formation than the second SCR catalyst composition, and the second SCR catalyst composition having a different composition than the first SCR catalyst composition, the second SCR catalyst composition promoting lower N2 formation and higher N2O formation than the first SCR catalyst composition, wherein the first SCR catalyst composition and the second SCR catalyst composition are in a layered relationship, with the first SCR catalyst composition layered on top of the second SCR catalyst composition. |
| 地址 |
Florham Park NJ US |
