ECN publication
Sol-gel routes towards microporous titania and zirconia membranes on tubular supports
Published by: Publication date:
ECN Energy Efficiency in Industry 20-12-2007
ECN report number: Document type:
ECN-M--07-106 Conference Paper
Number of pages: Full text:
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Presented at: XIV International Sol-Gel Conference, Montpellier, France, 2-7 september 2007.

Industrial separation processes consume around 40% of the total energy use in the (petro)chemical industry. For the separation of many liquid or gaseous mixtures molecular separation using membranes is a much more efficient option [1, 2]. To achieve this, industrial demands of (long term) stability, pressure resistance, and permeance should be met. Unlike most polymeric membranes, ceramic membranes such as microporous titania and zirconia membranes are potentially stable at temperatures over 100°C. Moreover, careful design of the ceramic support system ensures mechanical stability and high permeance of the membrane layer. Most of the reported titania and zirconia membranes have pore sizes over 1 nm and are very limited in surface area. Therefore, industrial application of these membranes in molecular separations has not yet been demonstrated.

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