B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/94 (2006.01) B01D 46/24 (2006.01) F01N 3/035 (2006.01)
Patent
CA 2577621
The invention relates to a catalytically coated particle filter which comprises two catalysts arranged one after the other. The first catalyst is located in the gas inlet zone of the filter and contains a palladium/platinum catalyst. The second catalyst is located behind it and preferably contains only platinum as the catalytically active component. The combination of these two catalysts imparts good resistance to aging and sulfur poisoning to the coated filter.
L'invention concerne filtre à particules doté d'un revêtement catalytique contenant deux catalyseurs successifs. Le premier catalyseur se trouve dans la zone d'admission de gaz du filtre et contient un catalyseur palladium/platine. Le deuxième catalyseur est placé derrière et contient comme composante catalytiquement active, de préférence, uniquement du platine. L'association de ces deux catalyseurs confère au filtre revêtu une bonne stabilité au vieillissement et une bonne résistance vis-à-vis d'une intoxication au soufre.
Adolph Pascal
Demel Yvonne
Koegel Markus
Kreuzer Thomas
Kuhl Tobias
Marks & Clerk
Umicore Ag & Co. Kg
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