Catalytic devices

Details Catalytic devices Catalytic devices

B - Operations, Transporting

01

D

B01D 53/94 (2006.01) B01J 35/02 (2006.01) B01J 37/02 (2006.01) F01N 3/035 (2006.01) F01N 3/20 (2006.01)

Patent

CA 2396471

The invention is a catalytic device comprised of a catalyst support of fused ceramic grains and a catalyst that is surface-bound to at least a portion of the ceramic grains, incorporated into at least a portion of the ceramic grains or combinations thereof, wherein the grains and catalyst form a surface structure that has a box counting dimension of greater than 1.00 or the box counting dimension has at least one step change when measured from a box size "d" of at least 1 micrometer to at most 1 millimeter. The invention is particularly useful in making a catalytic converter or catalytic converter-soot trap.

L'invention concerne un dispositif catalytique comportant un support de catalyseur fait de grains céramiques fusionnés et un agent catalytique lié en surface à au moins une partie des grains céramiques et incorporé dans au moins une partie desdits grains céramiques ou des combinaisons de ceux-ci. Les grains et l'agent catalytique forment ainsi une structure de surface dont la dimension de boîtes est supérieure à 1.00 ou présente au moins un changement brusque, lorsqu'elle est mesurée à partir d'une dimension de boîtes "d" égale à au moins 1 micron et au plus 1 millimètre. Ladite invention est particulièrement utile à la fabrication de convertisseurs catalytiques ou de pièges à suie de convertisseurs catalytiques.

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