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Synthesis and gas separation properties of poly(ionic liquid)-ionic liquid composite membranes containing a copper salt

Abstract: 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 ([C4vim][Tf2N]), in the presence of CuCl and a non-polymerizable IL, 1-butyl-3-methylimidazolium chloride ([C4mim][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, H2, N2 and CO relative to those obtained in the pristine poly([C4vim][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/N2 and H2/N2 separations in the Cu-containing composite membranes with respect to the neat poly([C4vim][Tf2N]).

 Autoría: Zarca G., Horne W., Ortiz I., Urtiaga A., Bara J.,

 Fuente: Journal of Membrane Science, 2016, 515, 109-114

 Editorial: Elsevier

 Fecha de publicación: 01/10/2016

 Nº de páginas: 26

 Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.memsci.2016.05.045

 ISSN: 0376-7388,1873-3123

 Proyecto español: CTQ2012-31639

 Url de la publicación: https://doi.org/10.1016/j.memsci.2016.05.045