发明公开
EP3403721A1 OXIDATION CATALYST FOR TREATING THE EXHAUST GAS OF A COMPRESSION IGNITION ENGINE
有权
基本信息:
- 专利标题： OXIDATION CATALYST FOR TREATING THE EXHAUST GAS OF A COMPRESSION IGNITION ENGINE
- 申请号：EP18171942.8 申请日：2013-11-21
- 公开(公告)号：EP3403721A1 公开(公告)日：2018-11-21
- 发明人： BERGEAL, David , CHIFFEY, Andrew , GOODWIN, John , MOREAU, Francois , PHILLIPS, Paul , PRENDERGAST, Cathal , HATCHER, Daniel , RAJ, Agnes , RAJARAM, Raj
- 申请人： Johnson Matthey Public Limited Company
- 申请人地址： 5th Floor 25, Farringdon Street London EC4A 4AB GB
- 专利权人： Johnson Matthey Public Limited Company
- 当前专利权人： Johnson Matthey Public Limited Company
- 当前专利权人地址： 5th Floor 25, Farringdon Street London EC4A 4AB GB
- 代理机构： Nunn, Andrew Dominic
- 优先权： GB201220912 20121121; US201261728834P 20121121; GB201308934 20130517
- 主分类号： B01J23/42
- IPC分类号： B01J23/42 ; B01J23/44 ; B01J23/58 ; B01J21/04 ; B01J21/12 ; B01J35/04 ; B01J37/02 ; B01D53/62 ; B01D53/92 ; B01D53/94 ; F01N3/10 ; F01N3/38
摘要：
An oxidation catalyst for treating carbon monoxide (CO) and hydrocarbons (HCs) in exhaust gas from a diesel engine, wherein the oxidation catalyst comprises:
a first layer comprising a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component and a combination of a platinum (Pt) component and palladium (Pd) component; an alkaline earth metal component; and a support material comprising alumina doped with silica, wherein the alkaline earth metal component is supported on the support material;
a second layer comprising a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; and
a substrate, which is a flow-through monolith;
wherein:
the first layer is disposed on the substrate, the second layer is disposed on the first layer, and the first layer is different in composition to the second layer; and
the total amount of the alkaline earth metal component is 0.35 to 17.66 gL- (10 to 500 gft- ).
a first layer comprising a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component and a combination of a platinum (Pt) component and palladium (Pd) component; an alkaline earth metal component; and a support material comprising alumina doped with silica, wherein the alkaline earth metal component is supported on the support material;
a second layer comprising a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; and
a substrate, which is a flow-through monolith;
wherein:
the first layer is disposed on the substrate, the second layer is disposed on the first layer, and the first layer is different in composition to the second layer; and
the total amount of the alkaline earth metal component is 0.35 to 17.66 gL- (10 to 500 gft- ).
公开/授权文献:
IPC结构图谱:
| B | 作业；运输 |
| --B01 | 一般的物理或化学的方法或装置 |
| ----B01J | 化学或物理方法，例如，催化作用、胶体化学；其有关设备 |
| ------B01J23/00 | 不包含在B01J21/00组中的，包含金属或金属氧化物或氢氧化物的催化剂 |
| --------B01J23/16 | .砷、锑、铋、钒、铌、钽、钋、铬、钼、钨、锰、锝或铼的 |
| ----------B01J23/40 | ..铂系金属的 |
| ------------B01J23/42 | ...铂 |