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    New organophilic mixed matrix membranes derived from a polymer of intrinsic microporosity and silicalite-1

    Year: 2013

    Journal: Polymer, 54, pp 2222-2230, 20130926

    Authors: Christopher R. Mason, Maria Giovanna Buonomenna, Giovanni Golemme, Peter M. Budd, Francesco Galiano, Alberto Figoli, Karel Friess, Vladimir Hynek

    Organizations: Organic Materials Innovation Centre, School of Chemistry, The University of Manchester, Mancheste M13 9PL, UK, Department of Chemical Engineering and Materials, University of Calabria, and INSTM Consortium, Via P. Bucci 45A, 87036 Rende, Italy, Institute on Membrane Technology (ITM-CNR), Via Pietro Bucci 17C, 87036 Rende, Italy, Department of Physical Chemistry, Institute of Chemical Technology, Technická 5, Prague 166 28, Czech Republic

    The preparation and characterization of novel PIM-1/silicalite-1 (MFI) mixed matrix membranes (MMMs)are reported. Silicalite-1 crystals of size 350 nm were synthesized and functionalized with 2-phenylethylgroups to favour a higher hydrophobicity in the PIM-1 matrix.MMMs with different functionalized crystalloadings (from 8.4 to 35.5 v%) were prepared, characterized and tested in the separation of ethanol fromaqueous mixtures with different concentration (5 and 9 wt%) via pervaporation. Pure gas transportproperties were also measured for the MMM with the highest filler loading. The enhancement in bothethanol/water separation factor (5.7 vs. 4.3) and CO2/N2 selectivity (30 vs. 24) compared to neat PIM-1indicates a positive effect of the silicalite-1 on the molecular separations investigated.