Sorption properties of Na xH 1 − xY zeolites

Abstract

Generation of structural OH groups in a series of zeolites Na x H 1 − x Y and their effects on the adsorption energy of molecules sorbing in a nonspecific way (CH 4, C 2H 6, C 3H 8) and in a specific way (CO, C 2H 4) were studied. Dependence of the heat of adsorption on the degree of decationization of the zeolite for molecules showing a specific sorption is explained by a decrease of the number of Na + ions in large zeolite cavities and on the basis of the properties of the OH groups characterized by an absorption band at 3640 cm −1.