Kinetics of gas-solid reactions in α-zirconium phosphate. H+/Na+ mixed diffusion coefficients Academic Article uri icon


  • The rates of reaction between gaseous HCl and sodium ion exchanged phases of α-zirconium phosphate have been measured. The reactions are diffusion controlled and were fit by an equation for diffusion in a sphere from a well stirred fluid of limited volume (Carman and Haul equation). Diffusion coefficients were of the order of 10-15-10-12 cm2/sec in the temperature range 25°-220°C. These coefficients are in the same range as those determined from self-diffusion studies but are several orders of magnitude smaller than those obtained from rates of exchange. Possible reasons for this discrepency are given. © 1981.

author list (cited authors)

  • Jerus, P., & Clearfield, A.

citation count

  • 9

publication date

  • January 1981