Hybrid Materials for Molecular Sieves

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Hybrid microporous organosilica membranes for molecular separations made by acid-catalyzed solgel synthesis from bridged silsesquioxane precursors have demonstrated good performance in terms of flux and selectivity and remarkable hydrothermal stability in various pervaporation and gas separation processes. The availability of wide range of α,ω-bis(trialkoxysilyl)alkane and 1,4-bis(triethoxysilyl)benzene precursors allows tuning of membrane properties such as pore size and chemistry. This chapter presents an overview of the synthesis and application of hybrid organosilica microporous membranes in liquid and gas separation processes. After a concise discussion of the history of solgel-derived microporous ceramic membranes for molecular separations, the solgel chemistry of bridged silsesquioxanes and all relevant processing steps needed to obtain a supported microporous films suitable for molecular separations are discussed. The performance of these membranes is correlated with the membrane compositional properties, such as nature, stiffness and length of the bridging group, and details of the solgel process.
Original languageEnglish
Title of host publicationHandbook of Sol-Gel Science and Technology
EditorsLisa Klein, Mario Aparicio, Andrei Jitianu
Place of PublicationSwitzerland
Number of pages27
ISBN (Electronic)978-3-319-19454-7
Publication statusPublished - 11 May 2016


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  • Hybrid materials for molecular sieves

    Ten Elshof, J. E., 9 Jul 2018, Handbook of Sol-Gel Science and Technology: Processing, Characterization and Applications. Springer, p. 2973-2999 27 p.

    Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

    Open Access
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