IONIC-CONDUCTIVITY OF ANHYDROUS ZIRCONIUM BIS(MONOHYDROGEN ORTHO-PHOSPHATE) AND ITS SODIUM-ION FORMS
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Conductivities have been measured by the vector impedance method for the layered compounds anhydrous -zirconium phosphate, Zr(HPO4)2, and several of its sodium ion phases. The values of the ionic diffusion coefficients are of the order of 10-6-10-8 cm2/s at 200C and activation energies range from 15.6 cal/mol for Zr(HPO4)2 to 18.6 cal/mol for ZrHNa(PO4)2. Comparisons are made with literature values of conductivity and self-diffusion coefficients for Zr(NaPO4)23H2O and kinetically determined diffusion coefficients for the phases containing both sodium and hydrogen ions. 1982.