期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 57, 期 1, 页码 170-175出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2007.04.001
关键词
filled PDMS membrane; silver oxide; desulfurization of gasoline; pervaporation
Mixed matrix membranes of polydimethylsiloxane (PDMS) with silver oxide (Ag2O) as the filler were prepared and used for desulfurization of model gasoline composed of n-octane and thiophenes. The effect of the degree of Ag2O loading, feed temperature on the pervaporation properties of Ag2O-filled PDMS membranes was investigated experimentally. Ag2O-filling leads to a decrease in total flux because of the tortuosity effect of the impermeable Ag2O particles dispersed in the membranes. Due to the physio-chemical interactions between Ag2O and thiophenes, an increase in selectivity to thiophenes was gained with Ag2O-filled membranes. Feed temperature shows different impact on selectivity to thiophenes for Ag2O-filled and unfilled membranes. Analysis of the selectivity-permeability trade-off was carried out for both the filled and unfilled membranes. (c) 2007 Elsevier B.V. All rights reserved.
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