Sorption kinetics of atmospheric gases on Li,RE(rare earth)-LSX zeolite beads as sorbents for oxygen PVSA processes

Sorption kinetics of argon, oxygen and nitrogen on beads of a representative sample of the oxygen PVSA sorbent Li,RE(rare earth)-LSX zeolite was investigated by a frequency-response method. Characteristic time constants and their dependencies on temperature and sorption-phase concentration were determined, rate-determining mass-transfer steps were identified, and the results were compared for the three gases.