Adsorption sites in zeolites A and X probed by competitive adsorption of H{sub 2} with N{sub 2} or O{sub 2}: Implications for N{sub 2}/O{sub 2} separation

The authors determine details of the adsorption of O{sub 2} or N{sub 2} in Li{sup +} exchanged zeolites by way of their effect on coadsorbed H{sub 2} molecules using inelastic neutron scattering (INS) techniques. The results clearly show, for example, the absence of type III cations in Li-A and the expected stronger binding of N{sub 2} (compared with O{sub 2}) and thereby provide insight into the relative efficacy of Li-X for O{sub 2}/N{sub 2} separation