NDLI: Fabrication of mixed-matrix membrane containing metal–organic framework composite with task-specific ionic liquid for efficient CO<sub>2</sub> separation

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Journal of Materials Chemistry A Vol - 4 Issue - 9

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Fabrication of mixed-matrix membrane containing metal–organic framework composite with task-specific ionic liquid for efficient CO₂ separation

Content Provider	Royal Society of Chemistry (RSC)
Author	Ma, Jing Huang, Hongliang Liu, Dahuan Guo, Xiangyu Ying, Yunpan Zhong, Chongli
Copyright Year	2016
Abstract	Mixed-matrix membranes (MMMs) have exhibited advantages in membrane-based gas separation in recent years, however, there is still intensive demand for the development of a proper method to design effective fillers to further enhance the gas separation performance of MMMs. In this work, a nanoporous material to selectively facilitate CO2 transport was proposed through the loading of a task-specific ionic liquid (TSIL) into a metal–organic framework (MOF). [C3NH2bim][Tf2N] and NH2-MIL-101(Cr) were selected as a demonstrative TSIL and MOF, respectively. The amine-containing TSIL worked as a selective CO2 transport carrier, which can be beneficial for the improvement of CO2 permeability and CO2/N2 selectivity. Simultaneously, NH2-MIL-101(Cr) is an appropriate porous host material that can control the good dispersion of TSIL and can effectively expose more active adsorption sites of the TSIL. Meanwhile, the amine-containing porous MOF is helpful for rapid CO2 transport and further increases the CO2 permeability. We further incorporated the porous composite into PIM-1 to fabricate MMMs with different loadings. The prepared TSIL@NH2-MIL-101(Cr)/PIM-1 membrane exhibits largely improved gas permeability and selectivity for CO2/N2 separation, with CO2 permeation values of 2979 Barrer and a CO2/N2 separation selectivity of 37 at 5 wt% loading. Compared with NH2-MIL-101(Cr)/PIM-1 and PIM-1 membranes, the CO2/N2 separation selectivity was increased by 116% and 119%, respectively, at the same loading.
Starting Page	7281
Ending Page	7288
Page Count	8
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	4
Issue Number	19
Journal	Journal of Materials Chemistry A
DOI	10.1039/c6ta02611g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	MOF Gas separation Nanoporous materials Ionic liquid Permeation Statistical dispersion Adsorption
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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