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

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).
Item Type:	Article
Faculty:	Science and Technology (TNW)
Research Group:	Inorganic Membranes (IM)
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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