| abstract |
A process for separating at least one gaseous perfluorinated hydrocarbon from a gas stream containing said perfluorinated hydrocarbon and one or more permanent gases comprising passing said gas stream through an adsorbent selected from silicon-rich adsorbents of the FAU structure, silicon-rich adsorbents of the BEA structure, silicon-rich adsorbents of the MOR structure, carbon molecular sieves having a pore diameter of at least 4.5 Angstroms (Å), carbonised, sulphonated styrene-divinylbenzene copolymers, mesoporous silicates of the M41S structure class and mixtures of these, thereby adsorbing the perfluorinated hydrocarbon(s) from the gas stream. |