Patent ID: 6261344
Filing Date: 2001-07-17
Classification: B01D,B01J,Y10S

Abstract:
A PSA process for separating a gas flow containing at least one first gas compound which is preferentially adsorbed on at least one adsorbent, and at least one second gas compound which is adsorbed less preferentially on at least said adsorbent than said first gas compound, wherein said at least one adsorbent comprises particles of X zeolite having a Si/Al ratio <1.5 and containing 80 to 99% Li.sup.+ cations, 0.01 to 20% Na.sup.+ cations, 0.01% to 10% Mg.sup.2+ cations, 0.01% to 10% Ca.sup.2+ cations, and 0 to 3% K.sup.+ cations wherein the sum of the contents of Li.sup.+ , Na.sup.+ , Mg.sup.2+ , Ca.sup.2+ and K.sup.+ cations is equal to 100% of the metal cation content in the zeolite phase of the adsorbent.