发明名称 |
Exhaust gas purifying catalyst compound, catalyst comprising said compound and method for preparing the compound |
摘要 |
The invention is to provide (i) a catalyst which does not require an activation of catalyst components by means of a calcination which has become a hindrance in the way of obtaining a catalyst having a high activity through a conventional technology and in which catalyst the compositing of vanadium with molybdenum is contemplated more than enough; ii) a method for producing the catalyst; (iii) a catalyst having an activity, especially having an activity at low temperatures and a durability both greatly increased; (iv) a catalyst compound for purifying an exhaust gas, in which compound the ratio of vanadium atom to molybdenum atom (V/Mo) is 3/2 or close thereto and which compound is expressed by the rational formula (NH<SUB>4</SUB>)<SUB>x</SUB>Mo<SUB>2</SUB>V<SUB>x</SUB>O<SUB>(3x+6) </SUB>wherein x is 2.8 to 3.2; and (v) a method for producing the catalyst compound through a step for reacting molybdenum oxide (MoO<SUB>3</SUB>) with ammonium metavanadate (NH<SUB>4</SUB>VO<SUB>3</SUB>) in the co-presence of water for a prescribed period of time.
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申请公布号 |
US7005402(B1) |
申请公布日期 |
2006.02.28 |
申请号 |
US20030415320 |
申请日期 |
2003.07.15 |
申请人 |
BABCOCK-HITACHI KABUSHIKI KAISHA |
发明人 |
KATO YASUYOSHI;YOKOYAMA KOUICHI;FUJISAWA MASATOSHI |
分类号 |
B01J27/24;B01D53/86;B01D53/94;B01J21/06;B01J21/12;B01J23/00;B01J23/22;B01J23/28;B01J31/12;B01J37/02;C01G39/00 |
主分类号 |
B01J27/24 |
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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