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Organic Ionic Plastic Crystal-Based Composite Membranes for Light Gas Separation: The Impact of Varying Ion Type and Casting Method.
ChemSusChem ( IF 7.5 ) Pub Date : 2020-09-09 , DOI: 10.1002/cssc.202001921 Fernando Ramos 1 , Maria Forsyth 1 , Jennifer M Pringle 1
ChemSusChem ( IF 7.5 ) Pub Date : 2020-09-09 , DOI: 10.1002/cssc.202001921 Fernando Ramos 1 , Maria Forsyth 1 , Jennifer M Pringle 1
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The promise of organic ionic plastic crystals (OIPCs) for development of a novel type of gas separation membrane with competitive gas selectivity for CO2/N2 was recently demonstrated. This work aimed to design more selective membranes by investigating a different type of OIPC and a new membrane preparation method. Two different OIPCs were solvent‐cast or co‐cast with poly(vinylidene difluoride) (PVDF), and their gas transport properties were compared. The first OIPC, methyl(diethyl)isobutylphosphonium hexafluorophosphate ([P122i4][PF6]), was previously studied using the co‐cast method, and this was used as a benchmark. The second, N‐methyl‐N‐ethylpyrrolidinium bis(fluorosulfonyl)imide ([C2mpyr][FSI]), was investigated for the first time for gas separation applications, achieving high selectivities (α
>40). The thermophysical properties of the composites indicated that the co‐casting method is a good way to fabricate solid, mechanically stable and durable membranes. Additionally, the enhanced molecular interactions indicated in OIPC/PVDF co‐cast composites point to a new approach for synthesis of other highly selective OIPC‐based membranes.
中文翻译：
用于轻气体分离的有机离子塑料晶体基复合膜：不同离子类型和铸造方法的影响。
最近证明了有机离子塑料晶体（OIPC）用于开发新型气体分离膜的前景，该膜具有极好的CO 2 / N 2气体选择性。这项工作旨在通过研究不同类型的OIPC和新的膜制备方法来设计更具选择性的膜。将两种不同的OIPC进行溶剂浇铸或与聚偏二氟乙烯（PVDF）共浇铸，并比较了它们的气体传输性能。先前使用共铸法研究了第一个OIPC，即甲基（二乙基）异丁基phosph六氟磷酸盐（[P 122i4 ] [PF 6 ]），并将其用作基准。第二个，N-甲基-N对气体分离应用首次研究了乙基乙基吡咯烷鎓双（氟磺酰基）酰亚胺（[C 2 mpyr] [FSI]），实现了高选择性（α
> 40）。复合材料的热物理性质表明，共浇铸方法是制造固体，机械稳定和耐用膜的好方法。此外，OIPC / PVDF共浇铸复合材料中显示的增强的分子相互作用指出了合成其他基于OIPC的高选择性膜的新方法。
更新日期：2020-11-09
>40). The thermophysical properties of the composites indicated that the co‐casting method is a good way to fabricate solid, mechanically stable and durable membranes. Additionally, the enhanced molecular interactions indicated in OIPC/PVDF co‐cast composites point to a new approach for synthesis of other highly selective OIPC‐based membranes.
中文翻译：
用于轻气体分离的有机离子塑料晶体基复合膜：不同离子类型和铸造方法的影响。
最近证明了有机离子塑料晶体（OIPC）用于开发新型气体分离膜的前景，该膜具有极好的CO 2 / N 2气体选择性。这项工作旨在通过研究不同类型的OIPC和新的膜制备方法来设计更具选择性的膜。将两种不同的OIPC进行溶剂浇铸或与聚偏二氟乙烯（PVDF）共浇铸，并比较了它们的气体传输性能。先前使用共铸法研究了第一个OIPC，即甲基（二乙基）异丁基phosph六氟磷酸盐（[P 122i4 ] [PF 6 ]），并将其用作基准。第二个，N-甲基-N对气体分离应用首次研究了乙基乙基吡咯烷鎓双（氟磺酰基）酰亚胺（[C 2 mpyr] [FSI]），实现了高选择性（α
> 40）。复合材料的热物理性质表明，共浇铸方法是制造固体，机械稳定和耐用膜的好方法。此外，OIPC / PVDF共浇铸复合材料中显示的增强的分子相互作用指出了合成其他基于OIPC的高选择性膜的新方法。
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