| 发明名称 |
EXHAUST GAS PURIFYING CATALYST, METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION METHOD USING SAME |
| 摘要 |
An exhaust gas purify catalyst includes a substrate (1), an oxidation catalyst layer (2) formed on the substrate (1) and containing zeolite and at least one catalytic metal, an LNT layer (3) formed on the oxidation catalyst layer (2) and containing an NOx storage material and at least one catalytic metal, and an NOx reduction layer (4) formed on the LNT layer (3) and containing Rh acting as a catalytic metal and at least one of alumina or zirconia, wherein the NOx reduction layer (4) has a larger content of Rh than that in each of the oxidation catalyst layer (2) and the LNT layer (3). |
| 申请公布号 |
US2015251169(A1) |
申请公布日期 |
2015.09.10 |
| 申请号 |
US201414430769 |
申请日期 |
2014.08.20 |
| 申请人 |
MAZDA MOTOR CORPORATION |
发明人 |
Baba Takashi;Yamada Hiroshi;Harada Koichiro;Sato Yoshiyuki;Shigetsu Masahiko;Takami Akihide |
| 分类号 |
B01J29/068;B01J23/63;B01J23/58;F02D41/02;B01J35/02;B01J37/02;B01D53/94;F01N3/18;B01J35/00;B01J35/04 |
主分类号 |
B01J29/068 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An exhaust gas purifying catalyst comprising:
a substrate; an oxidation catalyst layer formed on the substrate, and containing zeolite and at least one catalytic metal; a lean NOx trap (LNT) layer formed on the oxidation catalyst layer, and containing an NOx storage material and at least one catalytic metal; an NOx reduction layer formed on the LNT layer, and containing Rh acting as a catalytic metal and at least one of alumina or zirconia, wherein the NOx reduction layer has a larger content of Rh than in each of the oxidation catalyst layer and the LNT layer. |
| 地址 |
Hiroshima JP |
