Foam catalyst support for exhaust purification

Details Foam catalyst support for exhaust purification Foam catalyst support for exhaust purification

1994-02-22

2000-03-21

Griffin, Walter D.

Catalyst, solid sorbent, or support therefor: product or process

Miscellaneous

502177, 502178, 502182, 502200, 502527, 423445R, 4234474, B01J 2104, B01J 2118

Patent

active

060402660

ABSTRACT:
A method of producing an acoustic baffle/catalyst foam support material and the resultant material. A polyurethane open cell foam material is provided having a density between 10-100 ppi. The polyurethane foam is infiltrated with a resin material to produce an impregnated foam. The impregnated foam is pyrolized to form a carbon skeleton forming a carbon foam. The carbon foam skeleton is coated with one or more of the following group of materials to a relative density of five to thirty five (5-35) percent, the group of materials being SiC, Si.sub.3 N.sub.4, MoSi.sub.2 or high temperature metal.

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