Abstract
Experimental results for the adsorption of nitrogen-oxygen on two natural zeolite tuffs and M.S.5.A are reported. Mordenite tuff from shirasawa, Miyagi Prefecture and clinoptilolite tuff from Futatsui, Akita Prefecture were used in the present experiments. Adsorption of nitrogen oxygen was medsured at 25, 50, 75 and 1000C, and 1, 3 and 5 kg/cm2. Also the adsorption isotherms were obtained for pure nitrogen and oxygen on the three zeolites at 25, 50, 75 and 100C, and in the range of pressure from 0 to 7 kg/cm2. Separation factors of mordenite tuff, clinoptilolite tuff and M.S.5 A at 25C, 3 kg/cm2 and O.5 equilibrium nitrogen mole fraction in gas phase were 4.7, 3.0 and 3.3 respectively. The thermodynamic prediction method of predictig binary adsor ption data from the pure gas isotherms has been examined. The prediction at 25C and 3kg/cm2 was good for mordenite tuff but not for clinoptilolite tuff and M.S.5.A.
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