渗透汽化
膜
乙醇
脱水
吸附
化学工程
色谱法
化学
有机化学
工程类
渗透
生物化学
作者
Hua Jin,Kai Mo,Fei Wen,Yanshuo Li
标识
DOI:10.1016/j.memsci.2019.02.008
摘要
Well-intergrown hydrophilic CAU-10-H membranes were successfully prepared by microwave-assisted secondary growth. The as-synthesized CAU-10-H membranes exhibited high and reproducible performance for ethanol dehydration. For a 90 wt% ethanol feed, the CAU-10-H membrane had a total flux of 493 g m-2 h-1 and water/ethanol separation factor of 148 at 65 °C. Along with the increasing temperature or water feed concentration, the total flux increased while the water/ethanol separation factor decreased. The ideal water/ethanol selectivities of the CAU-10-H membranes were found to be significantly lower than its membrane selectivities, demonstrating that the preferential adsorption of water on hydrophilic CAU-10-H membrane to hinder ethanol transport played a prominent part in the ethanol-water separation. The CAU-10-H membranes are capable of being used in acidic conditions, and therefore showing great prospects for industrial applications.
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