SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 42 ›› Issue (2): 312-318.DOI: 10.1016/j.cjche.2021.02.011

• Regular • 上一篇    下一篇

Regulatable pervaporation performance of Zn-MOFs/polydimethylsiloxane mixed matrix pervaporation membranes

Guorong Wu1,5, Qiangwen Fan3,4, Wenjie Sun1, Zhiwu Yu1, Zhiqian Jia2, Jianguo Ma1   

  1. 1. Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology, Nanchang 330013, China;
    2. Lab for Membrane Science and Technology, College of Chemistry, Beijing Normal University, Beijing 100875, China;
    3. State Key Laboratory of Nuclear Resources and Environment, School of Biology, Chemistry and Material Science, East China University of Technology, Nanchang, 330013, China;
    4. Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Material Science, East China University of Technology, Nanchang 330013, China;
    5. Foshan (Southern China) Institute for New Materials, Foshan 528247, China
  • 收稿日期:2020-08-16 修回日期:2021-02-06 出版日期:2022-02-28 发布日期:2022-03-30
  • 通讯作者: Zhiqian Jia,E-mail:zhqjia@bnu.edu.cn;Jianguo Ma,E-mail:mjgyh8125@163.com
  • 基金资助:
    The works was supported by the National Natural Science Foundation of China (Nos. 22008028, 22102022 and 22166002), the Opening Project of Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices (PMND202003) and Foshan (Southern China) Institute for New Materials (2021AYF25015), State Key Laboratory of Nuclear Resources and Environment of East China University of Technology (NRE2021-16), and the Training Program of National College Students Innovation and Entrepreneurship (202110405009).

Regulatable pervaporation performance of Zn-MOFs/polydimethylsiloxane mixed matrix pervaporation membranes

Guorong Wu1,5, Qiangwen Fan3,4, Wenjie Sun1, Zhiwu Yu1, Zhiqian Jia2, Jianguo Ma1   

  1. 1. Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology, Nanchang 330013, China;
    2. Lab for Membrane Science and Technology, College of Chemistry, Beijing Normal University, Beijing 100875, China;
    3. State Key Laboratory of Nuclear Resources and Environment, School of Biology, Chemistry and Material Science, East China University of Technology, Nanchang, 330013, China;
    4. Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Material Science, East China University of Technology, Nanchang 330013, China;
    5. Foshan (Southern China) Institute for New Materials, Foshan 528247, China
  • Received:2020-08-16 Revised:2021-02-06 Online:2022-02-28 Published:2022-03-30
  • Contact: Zhiqian Jia,E-mail:zhqjia@bnu.edu.cn;Jianguo Ma,E-mail:mjgyh8125@163.com
  • Supported by:
    The works was supported by the National Natural Science Foundation of China (Nos. 22008028, 22102022 and 22166002), the Opening Project of Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices (PMND202003) and Foshan (Southern China) Institute for New Materials (2021AYF25015), State Key Laboratory of Nuclear Resources and Environment of East China University of Technology (NRE2021-16), and the Training Program of National College Students Innovation and Entrepreneurship (202110405009).

摘要: Pervaporation (PV) is an emerging separation technique for liquid mixture. Mixed matrix membranes (MMMs) often demonstrate trade-off relationship between separation factor and flux. In this study, by changing the organic linkers (2-methyl imidazolate, imidazole-2-carboxaldehyde, 2-ethyl imidazolate), ZIF-8, ZIF-90 and MAF-6 were prepared and filled in polydimethylsiloxane (PDMS) membranes for dealcoholization of 5% (mass) n-butanol solution, and the membranes properties and pervaporation performances were adjusted. Compared with the pure PDMS membrane, the addition of ZIF-8 resulted in a 9% increase in flux (1136 g·m-2·h-1) and a 22.5% increase in separation factor (28.3), displaying anti-trade-off effect. For the MAF-6/PDMS MMMs (2.0% mass loading), the pervaporation separation index (PSI) and separation factor were 32347 g·m-2·h-1 and 58.6 respectively (increased by 34% and 154% in contrast with that of the pure PDMS membrane), and the corresponding permeation flux was 552 g·m-2·h-1, presenting great potential in the removal butanol from water. It was deduced that the large aperture size combined with moderate hydrophobicity of metal-organic frameworks (MOFs) favor the concurrent increase in permeability and selectivity.

关键词: Pervaporation, Biofuel, Polydimethylsiloxane, Membranes, Metal-organic frameworks

Abstract: Pervaporation (PV) is an emerging separation technique for liquid mixture. Mixed matrix membranes (MMMs) often demonstrate trade-off relationship between separation factor and flux. In this study, by changing the organic linkers (2-methyl imidazolate, imidazole-2-carboxaldehyde, 2-ethyl imidazolate), ZIF-8, ZIF-90 and MAF-6 were prepared and filled in polydimethylsiloxane (PDMS) membranes for dealcoholization of 5% (mass) n-butanol solution, and the membranes properties and pervaporation performances were adjusted. Compared with the pure PDMS membrane, the addition of ZIF-8 resulted in a 9% increase in flux (1136 g·m-2·h-1) and a 22.5% increase in separation factor (28.3), displaying anti-trade-off effect. For the MAF-6/PDMS MMMs (2.0% mass loading), the pervaporation separation index (PSI) and separation factor were 32347 g·m-2·h-1 and 58.6 respectively (increased by 34% and 154% in contrast with that of the pure PDMS membrane), and the corresponding permeation flux was 552 g·m-2·h-1, presenting great potential in the removal butanol from water. It was deduced that the large aperture size combined with moderate hydrophobicity of metal-organic frameworks (MOFs) favor the concurrent increase in permeability and selectivity.

Key words: Pervaporation, Biofuel, Polydimethylsiloxane, Membranes, Metal-organic frameworks