| 发明名称 |
Method for treating a gas containing nitrogen oxides (NO<sub>x</sub>) using a composition comprising zirconium, cerium and niobium as a catalyst |
| 摘要 |
The invention relates to a method for treating a gas containing nitrogen oxides (NOx), in which an NOx-reduction reaction is carried out using a nitrogen-containing reducing agent, which invention is characterized in that the catalyst used for the reduction reaction is a catalytic system containing a composition comprising zirconium, cerium and niobium in the following percentages by weight, expressed in terms of the weight of oxide: 10-50% of cerium, 5-20% of niobium and the remainder consisting of zirconium. |
| 申请公布号 |
US9011806(B2) |
申请公布日期 |
2015.04.21 |
| 申请号 |
US201214001584 |
申请日期 |
2012.02.28 |
| 申请人 |
Rhodia Operations;Magnesium Elektron Limited |
发明人 |
Bisson Laure;Hernandez Julien;Jorge Coelho Marques Rui Miguel;Rohart Emmanuel;Bortun Mila;Harris Deborah Jayne;Jones Clare |
| 分类号 |
B01D53/56;B01D53/94;B01J21/06;B01J23/20;B01J37/02;F01N3/20;B01J29/06;B01J35/10;B01J37/00;B01J23/10;B01J37/04;B01J35/00;B01J29/48;B01J29/78;B01J29/85 |
主分类号 |
B01D53/56 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. Process for the treatment of a gas comprising nitrogen oxides (NOx), the process comprising reducing the NOx by a nitrogenous reducing agent in the presence of a catalytic system comprising a composition based on zirconium, cerium and niobium with the following contents by weight, expressed as oxide:
cerium oxide between 5% and 50%, the latter value being excluded; niobium oxide between 5% and 20%; the remainder as zirconium oxide. |
| 地址 |
Paris FR |
