Hostname: page-component-788cddb947-tr9hg Total loading time: 0 Render date: 2024-10-20T00:33:07.420Z Has data issue: false hasContentIssue false
  • English
  • Français

Acid Dissolution of a Texas Bentonite

Published online by Cambridge University Press:  01 January 2024

W. T. Granquist  and
G. Gardner Sumner
W. T. Granquist
Affiliation:
Mellon Institute, Pittsburgh, Pennsylvania, USA
G. Gardner Sumner
Affiliation:
Mellon Institute, Pittsburgh, Pennsylvania, 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.

Various physical properties of an acid-treated Texas bentonite were studied as a function of treatment time. The observed kinetics were pseudo first-order (large excess of acid) and on this basis and the x-ray results a model and mechanism are proposed that are consistent with observed surface area, exchange capacity, and surface acidity changes. A crude estimation of activation energy gave a value lower than that of Osthaus (1956) but of the right magnitude.

Type
Article
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 6 , February 1957 , pp. 292 - 308
Copyright
Copyright © Clay Minerals Society 1957

References

Benisi, H. A. (1956) Acidity of catalyst surfaces. I. Acid strength from colors of adsorbed indicators: J. Amer. Ghem. Soc., v. 78, pp. 5490–5494.CrossRefGoogle Scholar
Brindley, G. W. and Youell, R. F. (1951) A chemical determination of the tetra- hedral and octahedral aluminum ions in a silicate: Acta Cryst. v. 4, pp. 495–497.CrossRefGoogle Scholar
Brunauer, S., Emmett, P. H. and Teller, E. (1938) Adsorption of gases in multimolecular layers: J. Amer. Ghem. Soc. v. 60, pp. 309–319.CrossRefGoogle Scholar
Grim, R. E. (1953) Olay Mineralogy: McGraw-Hill Book Company, Inc., New York, 384 pp.Google Scholar
Kerr, G. T., Zimmerman, R. H., Fox, E. A. Jr. and Wells, F. H. (1956) Degradation of hectorite by hydrogen ion: in Glays and Glay Minerals, Natl. Acad. Sci—Natl. Res. Council pub. 456, p. 322–329.Google Scholar
Lepper, E. A., Ed. (1945) Official and Tentative Methods of Analysis: Association of Official Agricultural Chemists, Washington, D.C., pp. 13–20.Google Scholar
Mathews, A. C., Weed, S. B. and Coleman, N. T. (1955) The effect of acid and heat treatment on montmorillonoids, in Clays and Clay Minerals, Natl. Acad. Sci.—Natl. Res. Council pub. 395, pp. 403–412.Google Scholar
Osthaus, B. (1954) Chemical determination of tetrahedral ions in nontronite and Montmorillonite, in Clays and Clay Minerals, Natl. Acad. Sci.—Natl. Res. Council pub. 327, pp. 404–417.Google Scholar
Osthaus, B. (1956) Kinetic studies on montmorillonites and nontronite by the acid- dissolution technique, in Clays and Clay Minerals, Natl. Acad. Sci.—Natl. Res. Council pub. 456, pp. 301–321.Google Scholar
Packter, A. (1955) Catalysis by complexing anions. The kinetics of the activation of montmorillonite clays: Chem. & Ind. (Bev.), p. 1384.Google Scholar
Walling, C. (1950) The acid strength of surfaces: J. Amer. Ghem. Soc., v. 72, pp. 11641168.Google Scholar