发明名称 |
CATALYST FOR HYDROGEN GENERATION AND CATALYST FOR PURIFICATION OF EXHAUST GAS |
摘要 |
A noble metal and an NOx sorption member are loaded on a support which includes composite particles having a structure including a core portion in which ZrO2 is a major component and a superficial portion formed on a surface of the core portion and including an oxide, whose basicity is lower than ZrO2, more than the core portion. The composite particles exhibit a high basicity at the inside and a low basicity on the surface by Al2O3 or TiO2 which exists more in the surface. Accordingly, the sulfur-poisoning resistance is improved, and, at the same time, the post-durability NOx purifying ability is improved. <IMAGE> |
申请公布号 |
EP1371415(A4) |
申请公布日期 |
2004.11.10 |
申请号 |
EP20020711303 |
申请日期 |
2002.02.04 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
HARA, NAOYUKI;HACHISUKA, ICHIRO |
分类号 |
B01D53/86;B01D53/94;B01J21/04;B01J21/06;B01J23/40;B01J23/46;B01J23/58;B01J35/00;B01J37/03;C01B3/40;F01N3/08 |
主分类号 |
B01D53/86 |
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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