Purification of gases
AssigneeM.P. United Drug Company Limited
InventorsAndrew Holt, David W. White
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Abstract
A carbon monoxide-contaminated breathable gas (that is a gas or gas mixture containing sufficient oxygen to support human life) is purified by bringing it into contact with a bed of a catalyst, whereby to oxidize carbon monoxide to carbon dioxide and reduce the carbon monoxide contamination of gas, the catalyst being a promoted tin IV oxide-support precious metal catalyst in which the promoter is one or more metals of group 1b, 3b, 7bb and 8 of the Periodic Table (especially copper, nickel, manganese, silica or lanthanum) and the precious metal is platinum, palladium, rhodium, iridium or ruthenium.
Claims9
A method of reducing the carbon monoxide content of a carbon monoxide-contaminated breathable gas by bringing the contaminated gas into contact with a bed of catalyst, whereby to oxidise carbon monoxide in the gas to carbon dioxide, in which method the catalyst comprises a promoted tin IV oxide-supported precious metal catalyst, the promoter being one or more metals of group 1b, 3b, 7b and 8 of the Periodic Table and the precious metal being platinum, palladium, rhodium, iridium or ruthenium.
Dependencies are inferred from the claim text.