Collect. Czech. Chem. Commun. 1992, 57, 921-937

Diffusion Coefficients of Transition Metal Ion Complexes in Zeolites NaA, CaA, NaX

Athanasios G. Vlessidis and Nicholaos P. Evmiridis

Laboratory of Analytical Chemistry, Department of Chemistry, University of Ioannina, 451 10 Ioannina, Greece


Ion-exchange rate curves of aqueous and ammonia transition metal ion complexes are presented together with ion-exchange isotherms of the corresponding complexes using molecular sieves as ion-exchangers. The data are treated mathematically according to Danes and Wolf procedure and the diffusion coefficients for the specific transition metal ion complexes are obtained. Finally, the variation of diffusion coefficients with the extent of ion exchange is followed.