B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/94 (2006.01) B01J 23/10 (2006.01) B01J 35/10 (2006.01)
Patent
CA 2275942
The invention concerns a method for treating exhaust gas of internal combustion engines functioning with sulphur-containing fuel. This method is characterised in that it consists in using as catalyst a composition with base of a cerium oxide and a zirconium oxide, in a cerium/zirconium atomic proportion of at least 1, and of at least an oxide selected among yttrium, lanthanum and praseodym oxides having a specific surface area of at least 35m?2¿/g after 6 hour calcination at 900 ·C.
La présente invention concerne un procédé de traitement de gaz d'échappement de moteurs à combustion interne fonctionnant avec un carburant contenant du soufre. Ce procédé est caractérisé en ce qu'on utilise, à titre de catalyseur, une composition à base d'un oxyde de cérium et d'un oxyde de zirconium, dans une proportion atomique cérium/zirconium d'au moins 1, et d'au moins un oxyde choisi parmi l'oxyde d'yttrium, de lanthane et de praséodyme et qui présente une surface spécifique après calcination de 6 heures à 900 ~C d'au moins 35 m2/g.
Blanchard Gilbert
Visciglio Valerie
Rhodia Chimie
Robic
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