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US 3,944,505 AGranted
Catalytic structure
AssigneeComptoir Lyon-Alemond-Louyot
InventorRoger Claude LaCroix
Life of this patent
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Abstract
A catalytic device is made up of a stack of expanded metal sheets held spaced apart by wires between the sheets. The assembly is welded together to form a rigid block and the expanded metal sheets having a coating of metal aluminide covered with alpha alumina which in turn has a catalytic surface thereon.
Claims4
A catalytic structure comprising:
- a stack of expanded metal sheets arranged in generally parallel relation and spaced apart a distance of about 0.5 to 2.5 mm, the transparency of each sheet being from 20 to 80% and the thickness of the sheets before expansion being from 0.05 to 0.25 mm;
- means holding said sheets in said spaced relation in the form of a rigid block;
- and
- each sheet having thereon a layer of at least one metal aluminide, wherein the metal of said metal aluminide is selected from the group consisting of nickel and cobalt, said metal aluminide layer being covered with a layer of alpha alumina supporting a catalytic surface layer of platinum.
1 more element
Dependencies are inferred from the claim text.