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Ceramic-zeolite Composite Membranes and Use for Separation of Vapor-gas Mixtures

University of Colorado

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Technology Marketing SummaryHaving both high selectivity and high permeability, the zeolite membranes have great potential for highly selective separation of vapor/gas and gas/gas mixtures and for catalytic membrane reactor applications. However, it is very difficult to prepare the membranes with pore diameter smaller than 1 nm, to meet the needs for highly selective separation of gases.

A research team at the University of Colorado at Boulder led by Richard Noble had devloped a method of creating membranes with a uniform pore diameter of 0.6nm.DescriptionThe team has developed a zeolite silicalite-composite membrane, with a tubular alumina substrate and a continuous silicate thin layer on the wall of the substrate. By using a two-step in situ silicate synthesis, researchers were able to produce a silicalite membrane with a pore diameter of 0.6nm.Applications and Industries

Zeolites, referred to as molecular sieves, have already found huge applications in the petrochemical and chemical industries as sorbents and shape-selective catalysts.

More InformationCeramic-zeolite composite membranes and use for separation of vapor-gas mixtures (U.S. Patent 5,464,798; issued Nov. 7, 1995.Technology Status
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