支持离子液体膜和 Ion-Jelly®膜与 [BMIM][DCA]：用于 CO2 分离的性能比较。

Supported Ionic Liquid Membranes and Ion-Jelly® Membranes with [BMIM][DCA]: Comparison of Its Performance for CO2 Separation.

机构信息

REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.

出版信息

Membranes (Basel). 2015 Jan 14;5(1):13-21. doi: 10.3390/membranes5010013.

DOI:10.3390/membranes5010013

PMID:25594165

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4384089/

Abstract

In this work, a supported ionic liquid membrane (SILM) was prepared by impregnating a PVDF membrane with 1-butyl-3-methylimidazolium dicyanamide ([BMIM][DCA]) ionic liquid. This membrane was tested for its permeability to pure gases (CO2, N2 and O2) and ideal selectivities were calculated. The SILM performance was also compared to that of Ion-Jelly® membranes, a new type of gelled membranes developed recently. It was found that the PVDF membrane presents permeabilities for pure gases similar or lower to those presented by the Ion-Jelly® membranes, but with increased ideal selectivities. This membrane presents also the highest ideal selectivity (73) for the separation of CO2 from N2 when compared with SILMs using the same PVDF support but with different ionic liquids.

摘要

在这项工作中，通过将聚偏氟乙烯（PVDF）膜浸渍在 1-丁基-3-甲基咪唑二氰胺([BMIM][DCA])离子液体中来制备负载型离子液体膜（SILM）。测试了这种膜对纯气体（CO2、N2 和 O2）的渗透性，并计算了理想选择性。还将 SILM 的性能与最近开发的新型凝胶膜 Ion-Jelly®膜进行了比较。结果发现，PVDF 膜对纯气体的渗透性与 Ion-Jelly®膜相似或更低，但具有更高的理想选择性。与使用相同 PVDF 载体但不同离子液体的 SILM 相比，该膜在分离 CO2 和 N2 时具有最高的理想选择性（73）。