Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-19T11:13:33.504Z Has data issue: false hasContentIssue false
  • English
  • Français

The Structure of Organic Montmorillonites and Their Adsorptive Properties in the Gas Phase

Published online by Cambridge University Press:  01 January 2024

D. White
D. White*
Affiliation:
Leeds University, USA
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Previous work has shown that dimethyldioctadecyl ammonium montmorillonite is a very effective adsorbent in the gas phase for the separation of aromatic compounds from the paraffins, and for the separation of the disubstituted isomers of benzene. The present paper describes an investigation into this phenomenon.

For this purpose a method of calculating entropies of adsorption from gas chromatographic data was derived, and results are given for relevant organic vapours adsorbed on the quaternary ammonium derivative, and on octadecyl ammonium montmorillonite. These results throw considerable light on the basis of the selectivity shown by the quaternary ammonium derivative, and a possible explanation of the mechanism is given.

The effect of the method of preparation on the gas phase activity of this adsorbent is very large, and experimental work on the correlation of this with the structure of the derivative is described.

Type
General
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 12 , February 1963 , pp. 257 - 266
Copyright
Copyright © The Clay Minerals Society 1963

References

Barrer, R. M., and Kelsey, K. E. (1961a) Thermodynamics of inter-lamellar complexes Pt. 1. Trans. Faraday Soc., v. 57, pp. 452–462.CrossRefGoogle Scholar
Barrer, R. M., and Kelsey, K. E. (1961b) Thermodynamics of inter-lamellar complexes Pt. 2, Trans. Faraday Soc., v. 57, pp. 625–641.CrossRefGoogle Scholar
Barrer, R. M., and McLeod, D. M. (1955) Activation of montmorillonite by ion exchange: Trans. Faraday Soc., v. 51, pp. 1290–1297.CrossRefGoogle Scholar
Cowan, S. T. (1963) Adsorption by organo-clay complexes: in Clays and Clay Minerals, 10th Conf., Pergamon Press, New York, pp. 226–234.Google Scholar
Gregg, S. J., and Stock, R. (1958) Sorption isotherms and the chromatographic behaviour of vapours: in Gas Chromatography, Butterworths, London, pp. 90–97.Google Scholar
Hughes, M. A., White, D., and Roberts, A. L. (1959) Separation of the meta- and para- isomers of the xylenes, cresols and toluidines by gas solid chromatography: Nature, v. 184, p. 1796.CrossRefGoogle Scholar
Rotzsche, H. (1962) A new type of polar stationary phase with adjustable selectivity coefficient: in Gas Chromatography, 4th Conf., Butterworths, London, pp. 111–116.Google Scholar
Scott, C. G. (1962) Linear gas-solid chromatography: in Gas Chromatography, 4th Conf., Butterworths, London, pp. 36–45.Google Scholar
Street, G. V., and White, D. (1963a) Adsorption of phenols by organo-clay derivatives: J. Appl. Chem., v. 13, pp. 288–291.CrossRefGoogle Scholar
Street, G. V., and White, D. (1963b) Adsorption by organo-clay derivatives: J. Appl. Chem., v. 13, pp. 203–206.CrossRefGoogle Scholar
Street, G. V., and White, D. (1963c) English montmorillonites: Clay Minerals Bull., in press.Google Scholar
Street, G. V., and White, D. (1959) unpublished work.Google Scholar
White, D. (1957) Use of organic-montmorillonite compounds in gas chromatography: Nature, v. 179, pp. 1075–1076.CrossRefGoogle Scholar
White, D., and Cowan, S. T. (1958) The sorption properties of dimethyldioctadecyl ammonium bentonite using gas chromatography: Trans. Faraday Soc., v. 54, pp. 557–561.Google Scholar