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Chemcial Industry and Engineering 2023, Vol. 40 Issue (3) :84-95    DOI: 10.13353/j.issn.1004.9533.20220839
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Preparation and CO2 separation performance of MOFs/PEI mixed matrix membranes
MA Yingnan, HE Xingyan, TANG Shaohua, LIU Na, ZENG Lelin
School of Chemical Industry, Hunan Institute of Science and Technology, Yueyang Hunan 414006, China

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Abstract The separation and capture of carbon dioxide is of great importance for sustainable development. Polyether imide (PEI) has the advantages of excellent solvent resistance, high temperature resistance and high selectivity, but the low permeability limits its further development. In this study, two kinds of three-dimensional MOFs particles [UIO-66 and MIL-101(Cr)] and two kinds of two-dimensional MOFs nanosheets [CuBDC and Zn2(bim)4] were introduced to prepare four kinds of MOFs/PEI mixed matrix membrane (MMMs). The physical and chemical properties of MMMs were studied, and the CO2 separation performance was further compared. The results showed that the introduction of MOFs greatly improved the CO2 diffusion coefficient and separation performance of PEI films, and improved the anti-CO2 plasticization performance. Meanwhile, compared with three-dimensional MOFs particles, two-dimensional CuBDC nanosheets show better compatibility with PEI. When the filler content is 20%, the CO2 permeability of MMMs is 3.5 times higher than that of pure PEI films, and the CO2/CH4 selectivity is 2.2 times higher than that of pure PEI films. It is an effective strategy to prepare MMMs with two-dimensional MOFs nanosheets fillers for CO2 separation.
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Articles by authors
MA Yingnan
HE Xingyan
TANG Shaohua
LIU Na
ZENG Lelin
KeywordsCO2 separation   membrane separation   mixed matrix membrane   2-D MOFs nanosheets     
Received 2022-11-22;
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Corresponding Authors: 马英楠,讲师,E-mail:Mayingnan9@163.com;曾乐林,副教授,E-mail:zenglelin2013@126.com。     Email: Mayingnan9@163.com;zenglelin2013@126.com
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MA Yingnan, HE Xingyan, TANG Shaohua, LIU Na, ZENG Lelin.Preparation and CO2 separation performance of MOFs/PEI mixed matrix membranes[J]  Chemcial Industry and Engineering, 2023,V40(3): 84-95
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