Compact and light weight catalyst bed for use in a fuel cell pow

Details Compact and light weight catalyst bed for use in a fuel cell pow Compact and light weight catalyst bed for use in a fuel cell pow

1999-02-18

2000-10-31

Dunn, Tom

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

Miscellaneous

502345, 502343, 502337, 502339, 502326, 50252711, 50252724, 50252718, 429 40, 429 41, 429 44, B01J 3500, B01J 2104, H01M 486, H01M 490

Patent

active

061402664

ABSTRACT:
A fuel gas catalyst bed for use in a fuel cell power plant is formed from a monolithic open cell foam component, the open cell lattice of which forms gas passages through the catalyst bed. The monolithic component has a lattice of internal open cells which are both laterally and longitudinally interconnected so as to produce a diffuse gas flow pattern through the catalyst bed. All areas of the monolithic component which form the gas flow pattern are provided with an underlying high porosity wash coat layer. The porous surface of the wash coat layer is provided with a nickel catalyst layer, or a noble metal catalyst layer, such as platinum, rhodium, palladium, or the like, over which the gas stream being treated flows. The base foam lattice can be a metal such as aluminum, stainless steel, a steel-aluminum alloy, a nickel alloy, a ceramic, or the like material which can be wash coated. The use of an open cell lattice as the basis of a catalyst bed enables the formation of very compact, light weight and high surface area catalyst bed with excellent gas flow-through characteristics.

REFERENCES:
patent: 5174968 (1992-12-01), Whittenberger
patent: 5534475 (1996-07-01), Miramontes Cardenas et al.

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