发明名称 |
S STORAGE CATALYST AND EXHAUST GAS PURIFICATION APPARATUS |
摘要 |
An S storage catalyst 2 is equipped with a catalytic supporter, a catalytic metal being supported on this catalytic supporter and oxidizing SO 2 to SO 3 , and an S storage material being supported on the catalytic supporter and storing S components therein. This S storage catalyst 2 has an exhaust-gas-inlet-side high-concentration portion 2A in which the S storage material is supported on the catalytic supporter in a high concentration, and an exhaust-gas-outlet-side low-concentration portion 2A in which the S storage material is supported on the catalytic supporter in a low concentration that is lower than that of the high-concentration portion. In accordance with this S storage catalyst 2, it is possible to maintain the S storing performance favorably, even in a case where exhaust-gas temperatures are low, while keeping the material cost from rising steeply. |
申请公布号 |
EP2149398(A4) |
申请公布日期 |
2011.10.26 |
申请号 |
EP20080752656 |
申请日期 |
2008.05.13 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
OGURA, YOSHITSUGU;ENDO, TAKAYUKI |
分类号 |
B01J23/58;B01D53/94;F01N3/08;F01N3/24;F01N3/28 |
主分类号 |
B01J23/58 |
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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