发明名称 |
METHOD FOR THE PRODUCTION OF AN SCR-ACTIVE ZEOLITE CATALYST, AND SCR-ACTIVE ZEOLITE CATALYST |
摘要 |
An SCR-active zeolite catalyst and a method for producing same. To produce the catalyst, an Fe ion-exchanged zeolite is initially subjected to a first temperature treatment within a range of 300 to 600° C. in a reducing hydrocarbon atmosphere such that the oxidation state of the Fe ions decreases and/or the dispersity of the Fe ions on the zeolite increases, whereupon the reduced zeolite is subjected to a second temperature treatment within a range of 300 to 600° C. in an oxidizing atmosphere such that hydrocarbon residues or carbon residues are oxidatively removed, the zeolite being calcined to obtain a catalyst material during the two temperature treatments. Iron contained in the zeolite is stabilized in an oxidation state of less than +3 and/or the dispersity of the Fe ions on the zeolite is permanently increased such that a high SCR activity is achieved within a temperature range of less than 300° C. |
申请公布号 |
KR20120068890(A) |
申请公布日期 |
2012.06.27 |
申请号 |
KR20127008038 |
申请日期 |
2010.08.21 |
申请人 |
JOHNSON MATTHEY CATALYSTS (GERMANY) GMBH |
发明人 |
MUENCH JOERG WERNER;DOTZEL RALF |
分类号 |
B01J29/46;B01D53/94;B01J29/72;B01J37/12 |
主分类号 |
B01J29/46 |
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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