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Membranes 2018, 8(4), 93; https://doi.org/10.3390/membranes8040093

Impact on CO2/N2 and CO2/CH4 Separation Performance Using Cu-BTC with Supported Ionic Liquids-Based Mixed Matrix Membranes

1
Centro de Química Estrutural (CQE), Instituto Superior Técnico, Estrada Nacional 10, 2695-066 Bobadela, Portugal
2
Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Estrada Nacional 10, 2695-066 Bobadela, Portugal
3
LAQV-REQUIMTE, Departamento de Química, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
*
Authors to whom correspondence should be addressed.
Received: 30 August 2018 / Revised: 28 September 2018 / Accepted: 8 October 2018 / Published: 11 October 2018
(This article belongs to the Special Issue Zeolitic Membranes: Advances and Applications)
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Abstract

The efficient separation of gases has industrial, economic, and environmental importance. Here, we report the improvement in gas separation performance of a polyimide-based matrix (Matrimid®5218) filled with a Cu-based metal organic framework [MOF, Cu3(BTC)2] with two different ionic liquids (ILs) confined within the pores. The chosen ILs are commonly used in gas solubilization, 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]) and 1-Ethyl-3-methylimidazolium trifluoromethanesulfonate ([EMIM][OTf]), and the incorporation of the [EMIM][BF4]@Cu-BTC and [EMIM][OTf]@Cu-BTC composites in Matrimid®5218 proved to be an efficient strategy to improve the permeability and selectivity toward CO2/N2 and CO2/CH4 mixtures. View Full-Text
Keywords: mixed matrix membranes; metal–organic frameworks; ionic liquids; gas separation; Cu3(BTC)2; IL@Cu3(BTC)2; IL@MOF mixed matrix membranes; metal–organic frameworks; ionic liquids; gas separation; Cu3(BTC)2; IL@Cu3(BTC)2; IL@MOF
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Monteiro, B.; Nabais, A.R.; Casimiro, M.H.; Martins, A.P.S.; Francisco, R.O.; Neves, L.A.; Pereira, C.C.L. Impact on CO2/N2 and CO2/CH4 Separation Performance Using Cu-BTC with Supported Ionic Liquids-Based Mixed Matrix Membranes. Membranes 2018, 8, 93.

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