发明名称 |
Exhaust gas-purifying catalyst |
摘要 |
An object of the present invention is to provide an exhaust gas-purifying catalyst containing a composite oxide catalyst and a refractory support and being less prone to cause a decrease in its activity even when used at high temperatures in an atmosphere with high oxygen concentration. An exhaust gas-purifying catalyst includes a composite oxide catalyst containing rare-earth element, alkaline-earth element and precious metal, a part of the rare-earth element and a part of the alkaline-earth element forming composite oxide, and the composite oxide and a part of the precious metal forming solid solution, and a refractory support supporting the composite oxide catalyst and including at least one of a first composite oxide represented by a general formula AB2O4, a second composite oxide having perovskite structure represented by a general formula LMO3, and a third composite oxide having pyrochlore structure represented by a general formula X2Y2O7.
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申请公布号 |
US8187996(B2) |
申请公布日期 |
2012.05.29 |
申请号 |
US201113092022 |
申请日期 |
2011.04.21 |
申请人 |
MATSUEDA SATOSHI;KIMURA MAREO;NARITA KEIICHI;CATALER CORPORATION |
发明人 |
MATSUEDA SATOSHI;KIMURA MAREO;NARITA KEIICHI |
分类号 |
B01J23/10;B01D53/56;B01D53/94;B01J8/02;B01J23/00;B01J23/02;B01J23/06;B01J23/08;B01J23/56;B01J23/58;C01B21/00;C01B23/00;C01B25/00;C01B31/00;C01B33/00;C01B35/00;C01G28/00;C01G30/00 |
主分类号 |
B01J23/10 |
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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