Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-26T22:32:35.294Z Has data issue: false hasContentIssue false
  • English
  • Français

The Decomposition of Organic Amines on Montmorillonites under Ambient Conditions

Published online by Cambridge University Press:  01 July 2024

M. Frenkel  and
D. H. Solomon
M. Frenkel
Affiliation:
P.O. Box 4331, Melbourne, Victoria 3001, Australia
D. H. Solomon
Affiliation:
P.O. Box 4331, Melbourne, Victoria 3001, Australia
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.

The physical and chemical interactions between organic amines and mineral surfaces are of considerable importance in many industrial applications. For example, the preparation of organophilic minerals often involves the adsorption of organic amines, or the ion exchange of the minerals with quaternary ammonium salts (Jordon, 1951; Miller and Faust, 1972). Chemical interactions occurring in these systems have been studied because of their relevance to an understanding of the chemical nature of the clay surface. A number of these studies have reported on the decomposition of adsorbed amines and alkylammonium-mineral complexes at elevated temperatures, usually in excess of 100°C (Chaussidon and Calvet, 1965; Weiss and Roloff, 1963; Durand, Pellet and Fripiat, 1972; Chou and McAtee, 1969). It is now well established that under these conditions the mineral may have potential strong-acidity, and these reactions have been explained in terms of acid-induced decomposition or rearrangement of the adsorbed amines or their derivatives. However, there have been few studies of the reactions of organo-mineral complexes at temperatures below 100°C, under conditions where retention of adsorbed water could be expected to moderate the mineral surface acidity.

Type
Research Article
Information
Clays and Clay Minerals , Volume 25 , Issue 6 , December 1977 , pp. 463 - 464
Copyright
Copyright © Clay Minerals Society 1977

References

Chaussidon, J. and Calvet, R. (1965) Evolution of amine cations adsorbed on montmorillonite with dehydration of the mineral: J. Phys. Chem. 69, 2265.CrossRefGoogle Scholar
Chou, C. C. and McAtee, J. L. (1969) Thermal decomposition of organo-ammonium compounds exchanged onto montmorillonite and hectorite: Clays and Clay Minerals 17, 339.CrossRefGoogle Scholar
Durand, B. and Pellet, R. and Fripiat, J. J. (1972) Alkylammonium decomposition on montmorillonite surfaces in an inert atmosphere: Clays and Clay Minerals 20, 21.CrossRefGoogle Scholar
Galway, A. K. (1970) Reactions of alcohols and of hydrocarbons on montmorillonite surfaces: J. Catalysis 19, 330.CrossRefGoogle Scholar
Jordan, J. W. (1951) Lubricants: U.S. Pat. 2,531,440.Google Scholar
Miller, R. W. and Faust, S. D. (1972) Sorption from aqueous solutions by organic clays: I. 2,4-D by bentone 24: Adv. Chem. Serv. 111, 121.CrossRefGoogle Scholar
Weiss, A. and Roloff, G. (1963) Die Rolle organischer Derivate von Glimmerartigen Schichtsilikaten bei der Bildung von Erdol: Proc. Int. Clay Conf., Stockholm, Vol. 2, p. 373.Google Scholar