ADSORPTION OF CARBON MONOXIDE-NITROGEN, CARBON MONOXIDE-OXYGEN, AND OXYGEN-NITROGEN MIXTURES ON SYNTHETIC ZEOLITES

Experimental results for the adsorption of the binary gas mixtures oxygen‐nitrogen, oxygen‐carbon monoxide and nitrogen‐carbon monoxide on two synthetic zeolites are reported. In all of these experiments the temperature was −200°F. and the total pressure was 1 atm. Also reported are the isotherms for the three pure gases on the two zeolites at −200°F. The results indicate that these zeolites have a surface selectivity which is independent of any sieving effect based on the size of the adsorbed molecules. It does not appear that the strong separations obtained can be explained in terms of the van der Waals forces which are generally believed to be dominant in physical adsorption. The available methods of predicting binary adsorption data from the pure gas isotherms have been examined. Copyright © 1969 American Institute of Chemical Engineers