Electric conductivity of Na and Ag forms of A and X zeolites. The effect of cluster formation on the conductivity

Abstract

The electric conductivity of Na and Ag forms of zeolites in the temperature range from room temperature to 500°C was measured by the ac impedance method. The Ag forms of zeolites exhibit a lower electric conductivity than the corresponding Na forms, which is ascribed to the formation of Agnq+ clusters in the process of dehydration. The clusters can be partly oxidized by oxygen and that is manifested in an increase of electric conductivity. © 1991.