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DOI: 10.1039/A808730J (Paper) Reference Section for: Phys. Chem. Chem. Phys., 1999, 1, 2501-2504

MIMS evaluation of pervaporation processes

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Ana C. B. Silva, Rodinei Augusti, Ilza Dalmázio, Dario Windmöller and Rochel M. Lago

Abstract

The potential of MIMS (membrane introduction mass spectrometry) to study pervaporation processes through a polydimethylsiloxane (PDMS) membrane is demonstrated. From the MIMS profiles of aqueous alcohol solutions (ethanol, propan-1-ol, propan-2-ol, butan-1-ol, 2-methylpropan-2-ol, pentan-1-ol, 2-methylbutan-2-ol, cyclohexanol), diffusion coefficients and fluxes were calculated. The diffusion of chloroform, phenol, toluene and chlorobenzene was also studied. Selectivity (α) and enrichment (β) pervaporation factors have been obtained for ethanol–water solutions.

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