Adsorbent-catalyst for exhaust gas purification, adsorbent...

B - Operations – Transporting – 01 – J

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B01J 35/04 (2006.01) B01D 53/92 (2006.01) B01D 53/94 (2006.01) B01J 20/28 (2006.01) B01J 35/00 (2006.01) B01J 37/02 (2006.01) F01N 3/08 (2006.01) F01N 3/20 (2006.01) F01N 3/28 (2006.01) F01N 13/02 (2010.01) F01N 7/02 (2006.01)

Patent

CA 2139089

An adsorbent-catalyst for exhaust gas purification, has a honeycomb structure having a large number of passages divided by partition walls, substantially parallel to the flow direction of an exhaust gas to be purified, an adsorbent layer having a hydrocarbon adsorbability, supported on the honeycomb structure, and a catalyst layer having a three-way catalytic activity or an oxidizing ability, supported on the honeycomb structure, in which adsorbent-catalyst the adsor- bent layer and the catalyst layer are separately supported on the honeycomb structure in all or part of the cross sections of the adsorbent-catalyst perpendicular to the flow direction of the exhaust gas.

Catalyseur adsorbant pour la purification de gaz d'échappement possédant une structure en nid d'abeilles comportant un grand nombre de passages divisés par des cloisons généralement parallèles au sens d'écoulement des gaz d'échappement à purifier, une couche adsorbante pour hydrocarbures supportée par la structure en nid d'abeilles, et une couche de catalyseur à triple action ou à capacité oxydante supportée par la structure en nid d'abeilles, dans laquelle le catalyseur adsorbant, la couche adsorbante et la couche de catalyseur sont supportées individuellement à la grandeur ou dans certaines parties d'une coupe transversale perpendiculaire au sens d'écoulement du gaz d'échappement.

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