化学修飾多孔質ガラス膜による水-アルコールの浸透気化分離

概要

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Porous glass membranes were modified with silane coupling agents and were used for the pervaporation separation of water-alcohol mixtures. The concentration of alcohols in the permeate increases with a decrease in the feed concentration. Especially, the selectivity for the alcohols is high when the glass membrane is modified with fluoroalkyl silane coupling reagents. In this system, the separation of water-alcohol mixtures was found to be performed through selective solution of alcohol into the organic layer formed on the surface and pore wall of the porous glass. The preferential permeation behaviors were analysed on the basis of the Flory-Huggins equation on swelling of polymer gel with a single-liquid approximation. The relation between separation factor and solubility parameter was also discussed.
日本膜学会の論文