バイコ-ルガラスによる水蒸気の吸着
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概要
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The rate of water vapor adsorption on porous Vycor glass was measured and the mechanism of the adsorption process was analyzed.<BR>The adsorption of water vapor on Vycor was divided into two different types of adsorption : physical adsorption and chemisorption. Physical adsorption accounted for most of the total adsorption at room temperature. It proceeded rapidly and the rate was determined by the internal diffusion control.<BR>Comparing the experimental values with the theoretical sorption curve, the internal diffusion coefficient was obtained. It could be shown that the contribution of surface diffusion to the total diffusion was so large that Knudsen diffusion was negligible. The observed surface diffusion coefficient changed with the amount of sorbate adsorbed on Vycor.<BR>The rate of chemisorption could well be expressed by the Elovich equation.
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