Gas catalysts comprising porous wall honeycombs

Details Gas catalysts comprising porous wall honeycombs Gas catalysts comprising porous wall honeycombs

B - Operations, Transporting

01

D

B01D 53/86 (2006.01) C04B 38/00 (2006.01) F01N 3/28 (2006.01)

Patent

CA 2677107

Embodiments of the invention pertain to a catalyst, which may be used in a catalytic converter for treating a gas stream containing pollutants. In an embodiment, the catalyst comprises a substrate having a plurality of axially enclosed channels defined by the porous wall elements extending between an inlet end and an outlet end. Washcoat particles are disposed substantially within the pores of the walls, and the surfaces of the wall elements have a porous, rough texture after coating with the washcoat and substantially no fillets formed on the channels.

L'invention concerne un catalyseur, qui peut être utilisé dans un pot catalytique pour traiter un flux gazeux contenant des polluants. Dans un mode de réalisation, le catalyseur comprend un substrat qui a une pluralité de canaux enfermés de manière axiale définis par les éléments de paroi poreuse s'étendant entre une extrémité d'entrée et une extrémité de sortie. Des particules de couche de wash coat (revêtement) sont disposées sensiblement dans les pores des parois, et les surfaces des éléments de paroi ont une texture rugueuse, poreuse après revêtement avec le wash coat et sensiblement aucune cannelure n'est formée sur les canaux.

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