Fundamental investigation on the development of composite membrane with a thin ion gel layer for CO2 separation
Fundamental investigation on the development of composite membrane with a thin ion gel layer for CO2 separation
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DOI：
10.1016/j.memsci.2022.121032
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发表时间：
2022-09
影响因子：
9.5
通讯作者：
Jinhui Zhang;Eiji Kamio;Atsushi Matsuoka;Keizo Nakagawa;Tomohisa Yoshioka;H. Matsuyama
中科院分区：
文献类型：
--
作者：
Jinhui Zhang;Eiji Kamio;Atsushi Matsuoka;Keizo Nakagawa;Tomohisa Yoshioka;H. Matsuyama
在这项研究中，开发了一种复合膜与薄的无缺陷的离子凝胶层。通过旋涂在聚（二甲基硅氧烷）沟槽层上制备含有互穿聚合物网络（IPN）和高离子液体（IL）含量（80-90重量%）的离子凝胶层。通过提高离子凝胶前驱体溶液的稀释比，IPN离子凝胶层的厚度从20 μm减小到600 nm，复合膜的CO2渗透率从45 GPU提高到613 GPU。当离子凝胶层中IL含量增加到90wt%时，复合膜的CO2渗透率为778 GPU，CO2/N2选择性为15。单独的具有90wt%IL的IPN离子凝胶层的CO2渗透性和CO2/N2选择渗透性分别估计为1860 GPU和27。IPN离子凝胶具有良好的气体渗透性能，是一种很好的选择性CO2分离复合膜材料。
A composite membrane with a thin defect-free ion gel layer was developed in this study. The ion gel layer containing an interpenetrating polymer network (IPN) and high ionic liquid (IL) content (80–90 wt%) was prepared on a poly(dimethylsiloxane) gutter layer by spin coating. The thickness of the IPN ion gel layer was reduced from 20 μm to 600 nm by increasing the dilution ratio of the ion gel precursor solution, and the CO2permeance of the composite membrane was increased from 45 to 613 GPU. By increasing the IL content of the IPN ion gel layer to 90 wt%, the prepared composite membrane exhibited the CO2permeance of 778 GPU and CO2/N2selectivity of 15. The CO2permeance and CO2/N2permselectivity of the IPN ion gel layer alone having 90 wt% IL were respectively estimated to be 1860 GPU and 27. The excellent gas permeation performance proves that IPN ion gel is a good optional material as a selective layer of a composite membrane for efficient CO2separation.