Patent ID: 7524359

Claim:
A method of purifying an impure gas, comprising the steps of: providing an impure gas comprising a first gas and an organic compound; providing a packed bed of granulated porous glass; allowing the impure gas to flow into the packed bed, thereby preferentially adsorbing at least some of the organic compound on the granulated porous glass to yield a purified gas having a concentration of the organic compound that is lower than that of the impure gas; allowing the purified gas to flow out of the packed bed; discontinuing the flow of impure gas into the packed bed; allowing a flow of an oxygen-containing gas heated to a temperature of at least 100° C. to flow into the packed bed thereby oxidizing any organic compounds adsorbed thereupon; and allowing the oxidized organic compounds, and any oxygen remaining after the adsorbed organic compounds have been oxidized, to flow out of the packed bed, thereby regenerating the packed bed.