Adsorption of Methane + Ethane and Methane +Carbon Monoxide on Molecular Sieves

Abstract

Experimental sorption isotherms are obtained for methane, ethane and carbon monoxide in three molecular sieves (two zeolitic and one carbon). Pressures from a few millibar absolute to as high as 30 bar are covered. Sorption isotherms for the binary mixtures methane + ethane and methane + carbon monoxide in the same sorbents are also obtained at 298 K and at equilibrium pressures within the range 2–12 bar. A circulating volumetric apparatus was built and employed for all the binary mixture sorption investigations. Total adsorbed amounts are determined for different gas-phase compositions. Vapour–adsorbate equilibria are determined. A correlation based on I.A.S.T. (Ideal Adsorbed Solution Theory) was studied in order to predict the vapour–adsorbate equilibria.