B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 21/08 (2006.01) B01D 53/94 (2006.01) B01J 23/40 (2006.01) B01J 35/02 (2006.01) B01J 35/04 (2006.01) B01J 35/10 (2006.01) B01J 37/00 (2006.01) B01J 37/02 (2006.01) B01J 37/08 (2006.01) B01J 23/42 (2006.01) B01J 29/12 (2006.01) B01J 29/44 (2006.01)
Patent
CA 2453267
The present invention relates to a catalyst for the purification of exhaust gases from an internal combustion engine, which comprises a catalytically active coating on an inert ceramic or metal honeycomb body, said coating comprising at least one platinum group metal selected from the group consisting of platinum, palladium, rhodium and iridium on a fine, oxidic support material. As an oxidic support material, the catalyst comprises a low- porosity material on the basis of silicon dioxide that comprises aggregates of essentially spherical primary particles having an average particle diameter of between 7 and 60 nm.
L'invention concerne un catalyseur de purification de gaz d'échappements de moteur à combustion interne, comprenant un revêtement catalytique sur une céramique inerte ou sur un corps métallique en nid d'abeille, le revêtement étant constitué d'au moins un métal du groupe du platine sélectionné parmi le groupe comprenant le platine, le palladium, le rhodium et l'iridium sur un matériau support fin d'oxyde. Le matériau support en oxyde est un matériau de faible porosité à base de dioxyde de silicium constitué d'agrégats de particules primaires essentiellement sphériques, ces particules possédant un diamètre moyen compris entre 7 et 60 nm.
Gieshoff Juergen
Klein Harald
Kreuzer Thomas
Lox Egbert
Neuhausen Ulrich
Marks & Clerk
Umicore Ag & Co. Kg
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