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Polyelectrolyte Reinforced Aerogels of Clays—Application as Chromatographic Adsorbents

Published online by Cambridge University Press:  01 July 2024

H. van Olphen
H. van Olphen*
Affiliation:
Shell Development Company, Houston, Texas
*
†Present address: National Academy of Sciences, National Research Council, Washington, D.C.
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Abstract

Aerogels of clays can be prepared by freeze-drying of clay water gels. The mechanical strength of the aerogels is improved by the addition of water-soluble polyelectrolytes to the hydrogels.

The porosity of the powdered aerogels can be adapted to the requirements for adsorbents in gas chromatography by compounding the hydrogels with suitable amounts of polyelectrolytes. Simultaneously, the surface of the clay may be modified by adsorption of polar or cationic organic compounds in order to achieve specific chromatographic separations.

Because of the toughness of the clay-polyelectrolyte aerogels, they can be rolled out to thin sheets which may be applied as chromatographic papers.

Type
General
Information
Clays and Clay Minerals , Volume 15 , February 1967 , pp. 423 - 435
Copyright
Copyright © 1967, Springer International Publishing

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Footnotes

*

Published by permission of Shell Development Company (A Division of Shell Oil Company), Exploration and Production Research Division, Houston, Texas. Publication No. 472.

References

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