Influence of Residual Water on the Adsorption of Atmospheric Gases in Li−X Zeolite:  Experiment and Simulation

Li−LSX zeolite (Si/Al = 1.0) is currently the best sorbent in use in the separation of air by adsorption processes. In this present work we have synthesized fully exchanged Li−LSX zeolite and measured the room-temperature equilibrium adsorption isotherms for N2, O2, and Ar after various degrees of d...

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Veröffentlicht in:Industrial & engineering chemistry research 2000-06, Vol.39 (6), p.1775-1780
Hauptverfasser: Hutson, Nick D, Zajic, Stefan C, Yang, Ralph T
Format: Artikel
Sprache:eng
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Zusammenfassung:Li−LSX zeolite (Si/Al = 1.0) is currently the best sorbent in use in the separation of air by adsorption processes. In this present work we have synthesized fully exchanged Li−LSX zeolite and measured the room-temperature equilibrium adsorption isotherms for N2, O2, and Ar after various degrees of dehydration. The effect of the residual water on the adsorption of these atmospheric gases was then simulated using Monte Carlo techniques. Very small amounts of water in the Li−LSX zeolite have a significant effect on the adsorptive capacity of these atmospheric gases with the capacity for N2 dropping from ≈17.4 molecules of N2 adsorbed/unit cell for the fully dehydrated material to
ISSN:0888-5885
1520-5045
DOI:10.1021/ie990763z