B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/94 (2006.01) B01J 23/34 (2006.01) B01J 23/889 (2006.01)
Patent
CA 2230714
A method for catalytically processing gases with a high oxygen content to reduce nitrogen oxide emissions by using a catalytic composition including manganese oxide and at least one oxide selected from cerium oxide and zirconium oxide. Said composition may further include at least one additional element from groups VIII, IB, IVB and VB. Said method is particularly suitable for processing exhaust gases from internal combustion engines, especially diesel or lean-burn engines.
L'invention concerne un procédé de traitement de gaz, à teneur élevée en oxygène, en vue de la réduction des émissions des oxydes d'azote, caractérisé en ce qu'on utilise une composition catalytique comprenant de l'oxyde de manganèse et au moins un oxyde choisi parmi l'oxyde de cérium et l'oxyde de zirconium. Cette composition peut comprendre en outre au moins un autre élément choisi parmi ceux des groupes VIII, IB, IVB et VB. Le procédé de l'invention s'applique notamment au traitement de gaz d'échappement de moteurs à combustion interne, plus particulièrement de moteurs diesel ou de moteurs fonctionnant en mélange pauvre.
Barthe Philippe
Hedouin Catherine
Seguelong Thierry
Rhodia Chimie
Robic
LandOfFree
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