发明名称 |
DOUBLE LAYERED EXHAUST GAS PURIFICATION CATALYST |
摘要 |
Provided is an exhaust gas purification catalyst (10) that has a substrate (11), a lower catalyst layer (12) that is formed on the substrate and contains at least one of Pd and Pt, and an upper catalyst layer (13) that is formed on the lower catalyst layer and contains Rh. A region that does not contain the upper catalyst layer is disposed on the exhaust gas upstream side of this exhaust gas purification catalyst, and the lower catalyst layer is formed of a front-stage lower catalyst layer (12a) on the exhaust gas upstream side and a rear-stage lower catalyst layer (12b) on the exhaust gas downstream side. The Front-stage lower, catalyst layer contains an oxygen storage material. |
申请公布号 |
EP2667967(A1) |
申请公布日期 |
2013.12.04 |
申请号 |
EP20120704116 |
申请日期 |
2012.01.26 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
AOKI, YUKI;NOBUKAWA, TAKESHI |
分类号 |
B01J23/63;B01D53/94;B01J35/00;B01J37/02 |
主分类号 |
B01J23/63 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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