化学
聚二甲基硅氧烷
水溶液
渗透汽化
膜
丁醇
化学工程
分离(统计)
色谱法
正丁醇
高分子化学
有机化学
乙醇
渗透
生物化学
工程类
机器学习
计算机科学
作者
Yunxiang Bai,Liangliang Dong,Chunfang Zhang,Jin Gu,Yuping Sun,Lin Zhang,Huan‐Lin Chen
标识
DOI:10.1080/01496395.2013.811424
摘要
ZIF-8-filled polydimethylsiloxane (PDMS) membranes, PDMS/ZIF-8, were prepared by a two-step polymerization process and were used to recover n-butanol from an aqueous solution by pervaporation (PV). Compared with pure PDMS membrane, PDMS/ZIF-8 membranes demonstrated an obviously higher n-butanol permselectivity. As an increase of ZIF-8 content, n-butanol/water selectivity increased initially and then decreased, while the n-butanol and water permeability decreased monotonously. PDMS/ZIF-8 membrane containing 2 wt% ZIF-8, that is, PDMS/ZIF-8-2 showed the highest selectivity. On the other hand, selectivity and permeability for n-butanol and water of PDMS/ZIF-8-2 membrane decreased with the increase of operating temperature. The selectivity and permeability for n-butanol reached 7.1 and 3.28 × 105 barrer, respectively, at 30°C when the feed concentration of n-butanol was 0.96 wt%.
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