Motions of K+ ion in zeolite L

Abstract

Abstract Motions of K + ion in zeolite L (LTL) were studied by dielectric spectroscopy. Two relaxation losses were measured in the ranges of 1.5≤log( fl Hz)≤6.5 and 392≤ T/K ≤633. Motions related to the relaxation losses on the lower and higher frequency sides showed activation energies of E I =81kJmol −1 and E II =23–30kJmol −1 , respectively. It was found from changes of spectrum with hydration that two motions were caused by a common K + ion. From the cation distribution in zeolite L, a framework structure of zeolite L and consideration for motions of cation in zeolite A(LTA), it was considered that the measured relaxation losses related to K + ion on the site D and the K + ion jumped around among sites (including site D) with much more different environment than K + ion in zeolite A.