Abstract
The kinetics of reaction of zirconium tetrachloride vapors with sodium chloride spheres to form sodium hexachlorozirconate have been studied as a function of pressure, temperature, and sphere size. Weight gain measurements in an all glass closed system were used to follow the course of the reaction. The reaction path conforms to the Carter-Valensi solid-gas kinetic model. Possible reaction mechanisms are postulated in the light of the measured temperature and pressure dependence of the rate constant and the marker experiment. The temperature dependence of the specific rate constant suggests that the reaction is preceded by adsorption of the tetrachloride gas on the surface of the reacting sphere.
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