Issue 34, 2013

Design and synthesis of a fluoro-silane amine monomer for novel thin film composite membranes to dehydrate ethanolviapervaporation

Abstract

A novel hybrid organic–inorganic amine monomer has been designed and synthesized to prepare thin film composite (TFC) membranes for ethanol dehydration via pervaporation. Different from the conventional amine monomer, m-phenylenediamine (MPD), used for interfacial polymerization, the new monomer was molecularly designed to sandwich an inorganic component nonafluorohexylmethyldichloro silane (ClSi) between two MPD molecules. Nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectrometry were used to characterize and verify the chemical structures of the new monomer and the polyamide film. As a result, the advantages of polymeric and inorganic materials are effectively integrated in the newly developed TFC membranes, and these membranes exhibit a superior pervaporation separation performance as compared to most reported membranes in the literature for ethanol dehydration. Their best pervaporation performance shows a flux of 1.9 kg m−2 h−1 and a separation factor of 108 for the dehydration of the 85/15 wt% ethanolwater mixture at 50 °C. These novel TFC membranes show great potential to compete with commercially available membranes.

Graphical abstract: Design and synthesis of a fluoro-silane amine monomer for novel thin film composite membranes to dehydrate ethanol via pervaporation

Article information

Article type
Paper
Submitted
02 May 2013
Accepted
17 Jun 2013
First published
08 Jul 2013

J. Mater. Chem. A, 2013,1, 9814-9826

Design and synthesis of a fluoro-silane amine monomer for novel thin film composite membranes to dehydrate ethanol via pervaporation

J. Zuo and T. Chung, J. Mater. Chem. A, 2013, 1, 9814 DOI: 10.1039/C3TA11728F

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