Hostname: page-component-7479d7b7d-c9gpj Total loading time: 0 Render date: 2024-07-10T22:58:29.828Z Has data issue: false hasContentIssue false
  • English
  • Français

Partial molal volumes of calcium-montmorillonite

Published online by Cambridge University Press:  09 July 2018

E. A. Ferreiro  and
A. K. Helmy
E. A. Ferreiro
Affiliation:
lnstituto de Edafologίa e Hidrologίa, Universidad National del Sur, Bahίa Blanca, Argentina
A. K. Helmy
Affiliation:
lnstituto de Edafologίa e Hidrologίa, Universidad National del Sur, Bahίa Blanca, Argentina
Get access Rights & Permissions [Opens in a new window]

Abstract

Partial molal voltmae of Ca-montmorillonite, apparent molal volume of silica gel in water and of Ca-montmorillonite in ethanol-water mixtures, were determined using pycnometer density measurements. No electrostriction of water was observed with silica gel but took place in Ca-montmorillonite thus indicating the principle role of surface charges in stricting water. In ethanol-water mixtures alcohol molecules were salted out at low alcohol concentration, but they started reaching inner zones near the clay surfaces when their mole fraction in solution was increased beyond the value of 0·55.

Type
Research Article
Information
Clay Minerals , Volume 9 , Issue 2 , December 1971 , pp. 177 - 184
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1971

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

Anderson, D.M. & Low, P.F. (1958) Proc. Soil Sci. Soc. Am. 22, 99.CrossRefGoogle Scholar
Bradley, W.F. (1959) Nature, 183, 1614.CrossRefGoogle Scholar
Brindley, G.W. & Hoffman, R.W. (1962) Clays Clay Miner. 9, 546.CrossRefGoogle Scholar
Brown, G. (1961) X-ray identification and structures of clay minerals. Mineralogical Society, London.Google Scholar
Butler, J.A.V. & Lees, A.D. (1931) Proc. R. Soc. Land. A 131, 382.Google Scholar
Dowdy, R.H. & Mortland, M.M. (1967) Clays Clay Miner. 15, 259.CrossRefGoogle Scholar
German, W.L. & Harding, D.A. (1969) Clay Miner. 8, 213.CrossRefGoogle Scholar
Graham, J. (1962) Nature, 196, 1124.CrossRefGoogle Scholar
Helmy, A.K., Assaad, F.F., Hassan, M.N. & Sadek, H. (1968) X phys. Chem. 72, 2358.CrossRefGoogle Scholar
Helmy, A.K., Assaad, F.F., Hassan, M.N. & Sadek, H. (1969) X Soil Sci., 20, 274.CrossRefGoogle Scholar
Landolt-Börnstein, (1959) Zahlenwerte und Functionen, Band II, Teil 6, p . 689, Springer Verlag.Google Scholar
Lewis, G.N. & Randall, M. (1961) Thermodynamics (2nd Ed.) McGraw-Hill.Google Scholar
Low, P.F. & Anderson, D.M. (1958) Proc. Soil Sci. Soc. Am., 22, 22.CrossRefGoogle Scholar
Mackenzie, R.C. (1958) Nature, 181, 334.CrossRefGoogle Scholar
Martin, R.T. (1960) Clays Clay Miner. 8, 1102.Google Scholar
Millero, F.J. (1969a) X phys. Chem. 73, 2417.CrossRefGoogle Scholar
Millero, F.J. (1969b) Limnology and Oceanography, 14, 376.CrossRefGoogle Scholar
Tadros, T.H.F. & Lyklema, J. (1968) X electroanal. Chem. 17, 267.CrossRefGoogle Scholar
Young, G.J. (1958) X Colloid Sci. 13, 67.CrossRefGoogle Scholar