Patent ID: 6413434
Filing Date: 2002-07-02
Classification: C10G,Y10S

Abstract:
A process for eliminating, reducing and/or suppressing halogenated compounds comprising HCl contained in a gas or a liquid, comprising contacting the gas or liquid with an adsorbent mass comprising a composition consisting of an alumina or aluminate and at least one compound of an alkali metal, an alkaline earth metal or a rare earth, said composition being obtained by depositing on an alumina, at least one compound of an alkali metal, an alkaline-earth metal or a rare earth, followed after deposition by calcining the alumina at a temperature of at least 600Â° C., said composition having a specific surface area of at most 110 m2/g when an alkali metal is deposited, a specific surface area of at most 140 m2/g when an alkaline-earth metal is deposited, and a specific surface area of at most 250 m2/g when a rare earth is deposited.