发明名称 |
Catalyst for clarification of nitrogen oxides |
摘要 |
A catalyst for purifying NOx is provided which efficiently decomposes and purify the NOx in an exhaust gas in an oxygen-excess atmosphere, excels in resistance to heat and in durability in a high temperature range under a high-temperature oxidizing atmosphere and in the presence of moisture and SOx, and manifests the catalytic activity over a wide range of temperature. It is a catalyst for purifying nitrogen oxides formed by coating (A) a catalytically active component comprising (A-a) iridium and (A-b) at least one element selected from the group consisting of the elements of Group IIIB and Group IVB in the Periodic Table of the Elements with (B) a refractory inorganic compound. It is further a nitrogen oxide expelling catalyst containing as catalytically active substances (A) iridium (A-a) and at least one element selected from the group consisting of the elements of Group IIIB and Group IVB in the Periodic Table of the Elements (A-b) and (C) at least one element selected from the group consisting of the Elements IIIA in the Periodic Table of the Elements.
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申请公布号 |
US2003144144(A1) |
申请公布日期 |
2003.07.31 |
申请号 |
US20020220914 |
申请日期 |
2002.12.09 |
申请人 |
GOTO HIDEKI;TANIGUCHI SHIGEYOSHI;HORIUCHI MAKOTO |
发明人 |
GOTO HIDEKI;TANIGUCHI SHIGEYOSHI;HORIUCHI MAKOTO |
分类号 |
B01D53/86;B01J23/62;B01J23/63;B01J37/02;(IPC1-7):B01J23/46 |
主分类号 |
B01D53/86 |
代理机构 |
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