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Swelling of Some Vermiculite-Organic Complexes in Water

Published online by Cambridge University Press:  01 January 2024

W. G. Garrett  and
G. F. Walker
W. G. Garrett
Affiliation:
Chemical Research Laboratories, C.S.I.R.O., Melbourne, Australia
G. F. Walker
Affiliation:
Chemical Research Laboratories, C.S.I.R.O., Melbourne, Australia
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Abstract

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Complexes formed by macroscopic vermiculite crystals and n-alkylammonium ions with alkyl chains of 3‐4 carbon atoms swell unidimensionally in water until the silicate layers are several hundred Ångströms apart.

The initiation of swelling is thought to involve the development of “icebergs” of the Frank-Evans type around the alkylammonium ions. Hydration of the oxygen surfaces of the silicate layers may also be a significant factor in the swelling process.

Cataphoresis experiments on finely dispersed aqueous suspensions indicate the presence of diffuse double layers of positive ions around negatively charged silicate particles. Further swelling on applying an electric field to individual swollen crystals immersed in water and dilute solutions also has been observed.

Type
Symposium on Clay—Organic Complexes
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 9 , February 1960 , pp. 557 - 567
Copyright
Copyright © The Clay Minerals Society 1960

References

Cowan, C. T. and White, D. (1958) The mechanism of exchange reactions occurring between sodium montmorillonite and various n-primary aliphatic amine salts: Trans. Faraday Soc., v. 54, pp. 691–697.CrossRefGoogle Scholar
Dodd, C. G. and Ray, Satyabrata (1960) Semiquinone cation adsorption on montmorillonite as a function of surface acidity: in Clays and Clay Minerals, Pergamon Press, New York, v. 8, pp. 237–251.Google Scholar
Frank, H. S. and Evans, M. W. (1945) Free volume and entropy in condensed systems, III. Entropy in binary liquid mixtures ; Partial molai entropy in dilute solutions ; Structure and thermodynamics in aqueous elect rolytes: J. Chem.. Phys., v. IB, pp. 507–532.Google Scholar
Frank, H. S. and Wen, Wen-Yang (1957) Structural aspects of ion-solvent interaction in aqueous solutions: A suggested picture of water structure: Disc. Faraday Soc., v. 24, pp. 133–140.CrossRefGoogle Scholar
Grim, R. E. (1953) Clay Mineralogy. McGraw-Hill Book Co., Inc., New York, pp. 1–384.Google Scholar
Hauser, E. A. and Leggett, M. B. (1940) Color reactions between clays and amines: J. Amer. Chem. Soc., v. 62, pp. 1811–1814.CrossRefGoogle Scholar
Hofmann, U. (1960) Verlauf der Quellung bei Kollagen, Schichtsilikaten, Polyphosphaten und Nukleinsäuren: Kolloid Z., v. 169, pp. 58–70.CrossRefGoogle Scholar
Jordan, J. W. (1949) Alteration of the properties of bentonite by reaction with amines: Min. Mag., v. 28, pp. 598–605.Google Scholar
Masterton, W. L. (1954) Partial molai volumes of hydrocarbons in water solution: J. Chem. Phys., v. 22, pp. 1830–1833.CrossRefGoogle Scholar
Mathieson, A. McL. and Walker, G. F. (1954) Crystal structure of magnesium-vermiculite: Amer. Min., v. 39, pp. 231–255.Google Scholar
Norrish, K. (1954) The swelling of montmorillonite: Disc. Faraday Soc., v. 18, pp. 120–134.CrossRefGoogle Scholar
Walker, G. F. (1950) Vermiculite-organic complexes: Nature, v. 166, 695-696.CrossRefGoogle Scholar
Walker, G. F. (1960) Macroscopic swelling of vermiculite crystals in water: Nature, v. 187, pp. 312–313.CrossRefGoogle Scholar
Walker, G. F. and Milne, A. (1950) Hydration of vermiculite saturated with various cations: Trans. 4th Int. Cong. Soil Sci., v. 2, pp. 62–67.Google Scholar
Weiss, A., Mehler, A. and Hofmann, U. (1956) Zur Kenntnis von organophilem Vermikulit: Z. Naturf., v. 11b, pp. 431–434.CrossRefGoogle Scholar