Patent ID: 7820592

Claim:
A composition for gas sorption comprising a gas sorbing component A dispersed in a component B, component B being in a form of a cross-linked and porous matrix, the composition being obtainable by a process comprising: mixing at least one material A′, that can be converted through a thermal treatment into the sorbing component A, with the component B or a precursor material B′ thereof, wherein at least one of component B or material B′ comprises a silicone resin, and wherein component B is mixed with material A′ if component B is capable of remaining essentially unaltered and of resisting a thermal treatment for changing material A′ into the sorbing component A, while material B′ is mixed with material A′ if material B′ is capable of transforming into component B after the thermal treatment; and subjecting the resulting mixture to a thermal treatment under vacuum or under an atmosphere of a gas that is inert with respect to sorbing component A, under conditions which cause conversion of material A′ into sorbing component A, wherein the component A comprises an oxide selected from calcium oxide, strontium oxide, barium oxide and magnesium oxide, and the material A′ comprises a respective hydroxide.