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Microporous zirconia–titania composite membranes have been fabricated by sol–gel processing using diethanolamine-modified precursor solutions. Microporous materials made from powders calcined at 400 °C show type I nitrogen sorption behavior. Supported ∼0.1 μm thick membranes (see figure) exhibit molecular-sieving properties and are expected to have great potential for separation and reaction applications under harsh conditions.
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Spijksma et al. (2006) studied this question.
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