The determination of the diffusion coefficient of water vapor in granulated zeolites by adsorption from a carrier-gas current
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We investigated the adsorption kinetics of water vapor on NaA and NaX granulated zeolites at a concentration of 1.75 mg/liter, 20°C and different carrier-gas velocities.
At a current velocity of 1.4 m/sec the approximate value of the diffusion coefficient may be calculated from the equation for internal diffusion, i.e., on the assumption that external mass exchange is infinitely rapid.
A measurement procedure with more efficient consumption of carrier-gas is recommended.
KeywordsZeolite Water Vapor Diffusion Coefficient Mass Exchange Current Velocity
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