The ionic conductivity of pressed pellets of dehydrated synthetic analcite, sodalite and offretite was determined by ac measurements at 10Hz to 10MHz. The ionic conductivity values of those zeolites exchanged with various monovalent cations were determined by using the complex impedance plane method. The conduction activation energies ranged from 63 to 101kJ/mol. Sodium analcite exhibited the best ionic conductivity: 1.8 x 10−4S/cm at 400C. A comparison was made with the conductivity of other ion-conducting solids.

Ionic Conductivity of Synthetic Analcime, Sodalite and Offretite. G.Kelemen, W.Lortz, G.Schön: Journal of Materials Science, 1989, 24[1], 333-8

Figure 7

THO Diffusivity in Analcite