CO2 adsorption in Y and X zeolites modified by alkali metal cation exchange

Abstract Ion exchange was performed on NaY and NaX zeolites with alkali metal cations Li+, K+, Rb+, and Cs+ and studied by adsorption of CO2. This is the first study to examine adsorption equilibrium isotherms and capacities of CO2 on the alkali metal series for both Y and X zeolites under mild conditions. CO2 capacity increased as Cs