Catalytic system for the reduction of nitrogen oxides

Details Catalytic system for the reduction of nitrogen oxides Catalytic system for the reduction of nitrogen oxides

B - Operations, Transporting

01

J

B01J 29/072 (2006.01) B01D 53/54 (2006.01) B01D 53/86 (2006.01) B01D 53/94 (2006.01) B01J 29/46 (2006.01) B01J 37/02 (2006.01) B01J 37/10 (2006.01) B01J 37/30 (2006.01) F01N 3/20 (2006.01)

Patent

CA 2193951

A catalytic process for the treatment of exhaust containing NOx along with other undesirable compounds is described. One embodiment of the process comprises a catalytic stage to selectively catalytically reduce NOx over an intermediate pore size zeolite catalyst that has been treated or modified to contain iron and then has been hydrothermally treated at least one time.

Procédé catalytique destiné au traitement de gaz d'échappement contenant du NO¿x? ainsi que d'autres composés indésirables. Dans un mode de réalisation, ce procédé comprend une étape catalytique permettant de réduire sélectivement, par voie catalytique, le NO¿x? au moyen d'un catalyseur à zéolite de grosseur de pore moyenne qui a été traité ou modifié de façon à contenir du fer, et qui a ensuite subi au moins un traitement hydrothermique.

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