Surface diffusion on modified surface of porous glass.

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概要

• 論文の詳細を見る

• Surface silanol groups of porous glass were esterified completely with three alcohols -methanol, ethanol and 1-propanolor partially with 1-propanol. Through these glasses, single-gas permeation experiments using carbon dioxide, propane, R-22, and R-114 were carried out at 308, 318 and 328 K. The possibility was indicated that selectivity is improved by suitable modifications. From these experiments, surface diffusivities and Henry constants of adsorption were determined. Their values also changed with surface modifications. Surface diffusivity Ds was studied in terms of molecular hopping on the assumption that the group-group distance is equal to the hopping distance λ.Ds/λ2, which is expected to be proportional to the average number of hopping molecules on one site, was successfully correlated with the dimensionless heat of adsorption Q/RT for original surfaces and partially and completely modified surfaces.

• 公益社団法人 化学工学会の論文

著者

• Okubo Tatsuya

  Department Of Chemical Engineering Graduate School Of Engineering The University Of Tokyo

• Inoue Hakuai

  Department Of Bioengineering Soka University

• OKUBO TATSUYA

  Department of Chemical Engineering, The University of Tokyo

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