发明名称 |
Catalyst for removing nitrogen oxides, method for production thereof and method for removing nitrogen oxides |
摘要 |
Disclosed is a method for producing a catalyst for removing nitrogen oxides which comprises dispersing a hydrated titanium (Ti) oxide or dried material thereof, tungstic acid or a salt thereof, and cerium (Ce) dioxide in a dispersion medium to form a sol-like material, mixing the sol-like material with an aqueous medium to form a catalyst slurry or paste, supporting the catalyst slurry or paste on a catalyst carrier, and then calcinating the carrier; in which catalyst the Ce dioxide is prevented from being embedded in the Ti oxide to realize such a high degree of dispersion of the Ce dioxide on the surface of the Ti oxide as comparable with the case wherein cerium ions are dispersed in micro voids of a zeolite by ion exchange; and the catalyst is free from the occurrence of such phenomena as sintering of the Ti oxide, and deterioration of zeolite with steam when a zeolite is used as carrier.
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申请公布号 |
US2005130836(A1) |
申请公布日期 |
2005.06.16 |
申请号 |
US20050506444 |
申请日期 |
2005.02.04 |
申请人 |
KATO YASUYOSHI;IMADA NAOMI;NAGAI YOSHINORI |
发明人 |
KATO YASUYOSHI;IMADA NAOMI;NAGAI YOSHINORI |
分类号 |
F01N3/08;B01D53/86;B01D53/94;B01J21/06;B01J23/10;B01J23/30;B01J37/02;(IPC1-7):B01D53/56 |
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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