ZrO2 and TiO2 membranes for nanofiltration and pervaporation: Part 2. Development of ZrO2 and TiO2 toplayers for pervaporation

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Gestel van, Tim and Sebold, Doris and Kruidhof, Henk and Bouwmeester, Henny J.M. (2008) ZrO2 and TiO2 membranes for nanofiltration and pervaporation: Part 2. Development of ZrO2 and TiO2 toplayers for pervaporation. Journal of Membrane Science, 318 (1-2). ISSN 0376-7388

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Abstract:This paper reports the preparation of novel ZrO2 and TiO2 membrane layers with a tight pore structure for pervaporation applications, a high thermal and a high chemical stability. Optimized α-Al2O3/γ-Al2O3/ZrO2 and α-Al2O3/γ-Al2O3/TiO2 multilayer membranes, having a toplayer with a thickness 50–100 nm, were found defect-free in permporometry and displayed a high selectivity in standard pervaporation tests with alcohol/water mixtures. Separation tests at 70 °C demonstrated a separation factor exceeding 300 for a 95/5-wt% IPA/water mixture for both membranes. For the membrane with ZrO2 toplayer, the membrane quality was further demonstrated by applying ethanol/water as a feed mixture (separation factor > 150).
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/71881
Official URL:http://dx.doi.org/10.1016/j.memsci.2008.03.003
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