Invention Grant
US4751212A Process for the manufacture of a catalyst for the reduction of nitrogen
oxides in exhaust gases
失效
用于制造用于还原废气中的氮氧化物的催化剂的方法
- Patent Title: Process for the manufacture of a catalyst for the reduction of nitrogen oxides in exhaust gases
- Patent Title (中): 用于制造用于还原废气中的氮氧化物的催化剂的方法
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Application No.: US938525Application Date: 1986-12-05
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Publication No.: US4751212APublication Date: 1988-06-14
- Inventor: Claus Flockenhaus , Erich Hackler , Karl H. Laue , Klaus Merkel , Arnold Max , Werner Stender , Johann Jansen , Hartmut Kainer , Daniel Grimm , Blagoje Levkov
- Applicant: Claus Flockenhaus , Erich Hackler , Karl H. Laue , Klaus Merkel , Arnold Max , Werner Stender , Johann Jansen , Hartmut Kainer , Daniel Grimm , Blagoje Levkov
- Applicant Address: DEX Essen DEX Wiesbaden
- Assignee: Didier Engineering GmbH,Didier-Werke AG
- Current Assignee: Didier Engineering GmbH,Didier-Werke AG
- Current Assignee Address: DEX Essen DEX Wiesbaden
- Priority: DEX3543858 19851212
- Main IPC: B01D53/86
- IPC: B01D53/86 ; B01J23/745 ; B01J23/74 ; B01J27/053 ; C01B21/00
Abstract:
The invention relates to a process for the manufacture of a catalyst for the reduction of nitrogen oxides in exhaust gases. The catalyst contains a metal oxide. The catalyst is preferably used for catalytic reduction with ammonia. The process comprises screening a natural goethite iron ore to the required grain size and then treating the ore with sulfuric acid. Subsequently, the goethite iron ore is heated to a temperature which approximately equals the temperature at which it will be used in the catalytic reaction.
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