Adsorption of Argon and Oxygen on Silver Mordenite.

摘要

The maximum oxygen purity from a conventional pressure swing adsorption system is 95%, due to difficulty in separating argon and oxygen using 5A or 13X zeolites. Silver mordenite was studied as an alternative to the conventional adsorbents. Silver mordenite was prepared at three different silver concentrations, and adsorption isotherms were measured at 0, 30, 60 and 90 degrees C. Based on these isotherms, and other properties, recovery using a potential PSA process was predicted. It appears that a high silver concentration is necessary to produce pure oxygen using PSA. Due to kinetic constraints at low temperatures and poorer equilibrium at high temperatures, the optimum operating temperature is likely to be near 30 C. (jes)