引用本文:
张贵宝, 付圣权, 张可达. 碱金属离子改性聚乙烯醇渗透汽化膜[J]. 应用化学,
1994, 11(2): 81-84.
Citation: Zhang Guibao, Fu Shengquan, Zhang Keda. Alkali-Metal Ion Improved PVA Pervaporation Membrane[J]. Chinese Journal of Applied Chemistry, 1994, 11(2): 81-84.
Citation: Zhang Guibao, Fu Shengquan, Zhang Keda. Alkali-Metal Ion Improved PVA Pervaporation Membrane[J]. Chinese Journal of Applied Chemistry, 1994, 11(2): 81-84.
碱金属离子改性聚乙烯醇渗透汽化膜
English
Alkali-Metal Ion Improved PVA Pervaporation Membrane
Abstract:
The separation of ethanol/water mixture by pervaporation by crosslinked PVA-MA membrane containing LiCl,NaCl and KCl has been investigated.The flux increased markedly when salt content was less than 6 wt% in the dry membrane,and the separation factor increased when ethanol concentration in feed solution was high.The DSC results showed that the membranes adsorbed 5%~8wt% of free water from ethanol/water mixture (50/50wt/wt),which is hardly observed by weighing method.
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Key words:
- pervaporation
- / membrane
- / poly(vinyl alcohol)
- / ethanol separation
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