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ZIF-8 Filled Polydimethylsiloxane Membranes for Pervaporative Separation n-Butanol from Aqueous Solution

Authors： ZHANG Chunfang, DONG Liangliang, BAI Yunxiang, GU Jin, SUN Yuping

Units： The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Materials Engineering, Jiangnan University, Wuxi 214122

KeyWords： Polydimethylsiloxane membrane; ZIF-8; Pervaporation; n-Butanol; Biofuels

ClassificationCode：TQ027.3

year,volume(issue):pagination： 2013,33(4):88-93

Abstract：

ZIF-8 filled polydimethylsiloxane (PDMS) membranes, PDMS/ZIF-8, were prepared by a two-step polymerization process, which were used as membrane material to recover n-butanol from aqueous solution by pervaporation (PV). The membranes demonstrated high n-butanol permselectivity and with the increase of ZIF-8 loading, the separation factor increased initially and then decreased, while the total flux decreased. The PDMS/ZIF-8 membranes containing 2 wt% ZIF-8, PDMS/ZIF-8-2, showed the highest separation factor. On the other hand, the separation factor and total flux of PDMS/ZIF-8-2 membrane increased with the increase of temperature. The separation factor and total ?ux reached 49.24 and 8.43 kg?m/(m2h), respectively, at 60 oC when the feed concentration of n-butanol is 0.96 wt%.

Funds：

国家自然科学青年基金项目（21106053）和中央高校基本科研业务费专项资金（JUSRP311A01）资助；

AuthorIntro：

张春芳（1977-），女，内蒙古人，博士，副教授，主要研究方向，膜分离.*通讯联系人，E-mail：baisir223@163.com

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