Abstract

Adsorption isotherms were measured for methane in NaX, MgX, CaX, SrX, and BaX zeolites at temperatures from 25 to 70 o C, and at pressures up to 6900 kPa. The effects of activation were studied. It is found that activation under vacuum at 1 o C/min up to 400 o C for 24 h is best for these zeolites. The virial adsorption model, Ruthven's statistical model, and Dubinin's equation were used to correlate the high-pressure absorption data

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