期刊
JOURNAL OF MEMBRANE SCIENCE
卷 515, 期 -, 页码 109-114出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2016.05.045
关键词
Polymer; Ionic liquid; Membrane; Copper (I) chloride; Gas separation
资金
- Spanish Ministry of Economy and Competitiveness (MINECO) at the Universidad de Cantabria [CTQ2012-31639]
- American Chemical Society - Petroleum Research Fund [ACS-PRF 52190-DNI9]
Composite poly(ionic liquid)-ionic liquid membranes containing copper (I) chloride (CuCl) have been successfully fabricated via photopolymerization of an IL monomer, 1-vinyl-3-butylimidazolium bistriflimide ([C(4)vim][Tf2N]), in the presence of CuCl and a non-polymerizable IL, 1-butyl-3-methylimidazolium chloride [C(4)mim][Cl]), forming the chlorocuprate anion ([CuCl2](-)) in situ. The influence of the metal salt content on the gas separation performance of the composite membranes was assessed. Results showed that increasing the content of non-polymerizable IL enhanced the permeabilities of CO2, H-2, N-2 and CO relative to those obtained in the pristine poly([C(4)vim][Tf2N]); whereas the addition of CuCl induced a general reduction of gas diffusivity. On the whole, an enhancement of both gas permeability and ideal gas pair selectivity were observed for CO2/N-2 and H-2/N-2 separations in the Cu-containing composite membranes with respect to the neat poly([C(4)vim][Tf2N]). (C) 2016 Elsevier B.V. All rights reserved.
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