Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-26T08:14:29.911Z Has data issue: false hasContentIssue false
  • English
  • Français

Cation exchange in the interlayers of expansible layer silicates

Published online by Cambridge University Press:  09 July 2018

H. Graf von Reichenbach
H. Graf von Reichenbach*
Affiliation:
Institut für Pflanzenernährung und Bodenkunde der Universität Kiel, Olshausenstrasse 40-60, Kiel, Germany
Get access Rights & Permissions [Opens in a new window]

Abstract

The relation between counter ion distribution, ion mobility and degree of contraction has been studied on hydrobiotite (2–5 µ size), equilibrated with mixed RbCl-SrCl2 solutions. From X-ray data, isotopic exchange and chemical extraction, it appears that the counter ions of the contracted portions of the interlayers are not in equilibrium with the solution phase. The distribution of counter ions in the interlayer space follows a gradient from the margin of the mineral to the centre. This distribution is the result of the interruption of a diffusion process, caused by the contraction of layers during exchange. Isotopic exchange is rapid on the external surfaces and in the expanded portions of the interlayers, but very slow in the contracted part, where the rate of exchange amounts to only 0.002–0.02 m-eq/100 g/day, and decreases with time. On exchange with MgCl2 solutions, secondary expansion of the interlayer space occurs and some of the counter ions trapped in the contracted regions are released.

Type
Research Article
Information
Clay Minerals , Volume 7 , Issue 3 , July 1968 , pp. 331 - 341
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1968

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Basset, W.A. (1959) Am. Miner. 44, 282–299.Google Scholar
Bolt, G.H., Sumner, M.E. & Kamphorst, A. (1963) Proc. Soil Sci. Soc. Amer. 27, 294–299.CrossRefGoogle Scholar
Dehaan, F.A.M., Bolt, G.H. & Pieters, B.G.M. (1965) Proc. Soil Sci. Soc. Amer. 29, 528–530.CrossRefGoogle Scholar
Dümmler, H. & Schroeder, D. (1965) Z. PflErnähr. Düng. Bodenk. 109, 35.CrossRefGoogle Scholar
Helfferich, F. (1959) lonenaustauscher. Verlag Chemic GmbH, Weinheim, Bergstrasse.Google Scholar
Reichenbach, H. Graf, Von, Röskenbleck, H. & Niesel, W. (1964) Transactions of the 8th International Congress on Soil Science., Bucharest, Vol. III, pp. 305–313.Google Scholar
Schouwenburg J.CH., van & Schuffelen, A.C. (1963) Neth. J. agric. Sci. 11, 13–22.Google Scholar
Sumner, M.E. & Bolt, G.H. (1962) Proc. Soil Sci. Amer. 26, 541–544.CrossRefGoogle Scholar
Walker, G.F. (1963) Proceedings of the International Clay Conference., Stockholm, Part I, 177–181.Google Scholar