Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-18T14:51:15.086Z Has data issue: false hasContentIssue false
  • English
  • Français

Montmorillonite-Salt Interactions at 550°C

Published online by Cambridge University Press:  28 February 2024

I. M. Natale  and
A. K. Helmy
I. M. Natale
Affiliation:
Universidad Nacional del Sur, 8000, Bahía Blanca, Argentina
A. K. Helmy
Affiliation:
Universidad Nacional del Sur, 8000, Bahía Blanca, Argentina
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 reactions between montmorillonite and carbonates and hydroxides of Na, K and Li were studied at 550°C as a function of salt content and time. The reactions were found to be rapid with a half-time of 20–30 minutes. Good agreement was obtained between theoretical and experimental stoichiometric values for the clay-carbonate reaction. The 001 and 02,11 reflections of the products of the clay-salt reactions diminished in intensity and/or disappeared at and above the stoichiometric concentrations of the reactants.

Keywords

CarbonatesHydroxidesMontmorilloniteSolid-state reaction
Type
Research Article
Information
Clays and Clay Minerals , Volume 40 , Issue 2 , April 1992 , pp. 206 - 211
Copyright
Copyright © 1992, The Clay Minerals Society

Footnotes

Investigadora Comisión de Investigaciones Cientifícas de la Provincia de Buenos Aires, Departamento de Agronomía. Universidad Nacional del Sur.

References

Beretka, J. and Brown, T., Effect of particle size on the kinetics of the reaction between magnesium and aluminum oxides J. Amer. Cer. Soc. 1983 66 383 – 388 10.1111/j.1151-2916.1983.tb10055.x.CrossRefGoogle Scholar
Brindley, G. W., Sharp, J. H., Patterson, J. H. and Nashari Achar, B. N., Kinetics and mechanisms of dehy-droxylation processes. Temperature and vapor pressure dependence of dehydroxylation of kaolinite Amer. Mineral. 1967 52 201 – 211.Google Scholar
Hancock, J. D. and Sharp, J. H., Method of comparing solid state kinetic data and its application to the decomposition of kaolinite, brucite, and BaCO3 J. Amer. Cer. Soc. 1972 55 74 – 77 10.1111/j.1151-2916.1972.tb11213.x.CrossRefGoogle Scholar
Helmy, A. K., Peinemann, N. and Andreoli, C. Y., Use of the (02,11) X-ray diffraction reflections to identify clays Clays & Clay Minerals 1984 32 231 – 232 10.1346/CCMN.1984.0320312.CrossRefGoogle Scholar
Natale, I. M. and Mandolesi, M. E., Caracterización de un mineral montmorillonitico de la provincia de Río Negro Asoc. Geol. Arg. Rev. 1985 40 290 – 292.Google Scholar
Natale, I. M. and Helmy, A. K., Solid state reaction of sodium carbonate and montmorillonite at 550°C Clays & Clay Minerals 1989 37 89 – 95 10.1346/CCMN.1989.0370111.CrossRefGoogle Scholar
Welch, A. J. E. and Garner, W. E., Solid-state reactions Chemistry of the Solid State 1955 London Butterworths 292 – 310.Google Scholar