发明名称 |
Exhaust gas purifying catalyst and method of producing same |
摘要 |
An exhaust gas purifying catalyst for exhaust gas discharged from an automotive internal combustion engine. The catalyst comprises a substrate over which a hydrocarbons adsorbing material layer is formed as a lower layer to absorb hydrocarbons contained in exhaust gas. The hydrocarbons adsorbing material layer contains zeolite and colloidal silica which has undergone firing. The colloidal silica is in a chain-like form and/or a spherical form before and after the firing. Additionally, a catalyst component layer is formed as an upper layer over the hydrocarbons adsorbing material layer. The catalyst component layer contains a catalyst metal.
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申请公布号 |
US6589901(B2) |
申请公布日期 |
2003.07.08 |
申请号 |
US20010979302 |
申请日期 |
2001.11.21 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
YAMAMOTO SHINJI;TAKAYA MASAHIRO |
分类号 |
F01N3/08;B01D53/94;B01J23/56;B01J23/63;B01J29/068;B01J35/00;B01J35/02;B01J37/02;F01N3/10;F01N3/24;(IPC1-7):B01J29/06 |
主分类号 |
F01N3/08 |
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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