Ionic conductivity of anhydrous zirconium bis(monohydrogen orthophosphate) and its sodium ion forms |
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| Authors: | Paul Jerus Abraham Clearfield |
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| Institution: | Department of Chemistry, Texas A&M University, College Station, TX 77843, USA |
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| Abstract: | Conductivities have been measured by the vector impedance method for the layered compounds anhydrous α-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 200°C 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)2·3H2O and kinetically determined diffusion coefficients for the phases containing both sodium and hydrogen ions. |
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