发明名称 |
método para a produção de um catalisador de zeólito com atividade scr, e um catalisador de zeólito com atividade scr |
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 |
BR112012004819(A2) |
申请公布日期 |
2016.03.15 |
申请号 |
BR20121104819 |
申请日期 |
2010.08.21 |
申请人 |
JOHNSON MATTHEY CATALYSTS (GERMANY) GMBH |
发明人 |
JÖRG-WERNER MÜNCH;RALF DOTZEL |
分类号 |
B01D53/94;B01J29/46;B01J29/72;B01J37/08;B01J37/12;B01J37/16 |
主分类号 |
B01D53/94 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|