Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-01T21:25:04.078Z Has data issue: false hasContentIssue false
  • English
  • Français

Perturbation of Structural Fe3+ in Smectites by Exchange Ions

Published online by Cambridge University Press:  01 July 2024

M. B. McBride ,
T. J. Pinnavaia  and
M. M. Mortland
M. B. McBride
Affiliation:
Contribution from the Departments of Crop and Soil Sciences, Geology and Chemistry, Michigan State University, East Lansing, Michigan 48824, U.S.A.
T. J. Pinnavaia
Affiliation:
Contribution from the Departments of Crop and Soil Sciences, Geology and Chemistry, Michigan State University, East Lansing, Michigan 48824, U.S.A.
M. M. Mortland
Affiliation:
Contribution from the Departments of Crop and Soil Sciences, Geology and Chemistry, Michigan State University, East Lansing, Michigan 48824, U.S.A.
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 electron spin resonance of some structural Fe3+ for montmorillonites having low Fe3+ content, is perturbed by electrostatic interaction between exchange cations and structural charge sites. The position of charge centers of organic and inorganic cations in the interlayer can thus be determined at various levels of solvation. Dielectric media between the silicate layers lower the electrostatic attraction between the silicate and the exchange cations. The silicate charge appears to be partially delocalized on structural oxygen atoms as shown by electron spin resonance and i.r. spectroscopy. There is also evidence that divalent exchange cations on dehydrated montmorillonites cause hydrolysis of water; the protons so produced migrate to structural charge sites.

Type
Research Article
Information
Clays and Clay Minerals , Volume 23 , Issue 2 , April 1975 , pp. 103 - 107
Copyright
Copyright © 1975, The Clay Minerals Society

References

Angel, B. R. and Hall, P. L., (1972) Electron spin resonance studies of kaolins Proc. Int. Clay Conf. Madrid 47–60.Google Scholar
Farmer, V. C. and Russell, J. D., (1971) Interlayer complexes in layer silicates; the structure of water in lamellar ionic solutions Trans. Faraday Soc. 67 2737–2749.CrossRefGoogle Scholar
Gast, R. G. and Mortland, M. M., (1971) Self-diffusion of alkylammonium ions in montmorillonite J. Colloid Interface Sci. 37 80–92.CrossRefGoogle Scholar
Grim, R. E., (1968) Clay Mineralogy 2nd Edition New York McGraw-Hill 220–223.Google Scholar
Grim, R. E., (1968) Clay Mineralogy 2nd Edition New York McGraw-Hill 260.Google Scholar
Kemp, R. C., (1971) Orthorhombic iron centres in musco-vite and phlogopite micas J. Phys. C. 4 L11–L13.CrossRefGoogle Scholar
Levanon, H. and Luz, Z., (1968) ESR and NMR of Mn (II) complexes in methanol J. Chem. Phys. 49 2031–2040.CrossRefGoogle Scholar
McBride, M. B. and Mortland, M. M., (1974) Cu (II) interactions with montmorillonite: evidence from physical methods Soil Sci. Soc. Am. Proc. 38 408–415.10.2136/sssaj1974.03615995003800030014xCrossRefGoogle Scholar
McBride, M. B. Mortland, M. M. and Pinnavaia, T. J., (1975) Exchange ion positions in smectite: effects on electron spin resonance of structural iron Clays and Clay Minerals 23 162.10.1346/CCMN.1975.0230213CrossRefGoogle Scholar
Mortland, M. M., (1966) Urea complexes with montmorillonite: an i.r. absorption study Clay Minerals 6 143–156.CrossRefGoogle Scholar
Mortland, M. M. and Raman, K. V., (1968) Surface acidity of smectites in relation to hydration, exchangeable cation, and structure Clays and Clay Minerals 16 393–398.10.1346/CCMN.1968.0160508CrossRefGoogle Scholar
Ross, G. J. and Mortland, M. M., (1966) A soil beidellite Soil Sci. Soc. Am. Proc. 30 337–343.CrossRefGoogle Scholar
Russell, J. D. and Farmer, V. C., (1964) I.r. spectroscopic study of the dehydration of montmorillonite and saponite Clay Min. Bull. 5 443–464.CrossRefGoogle Scholar
Russell, J. D. and Fraser, A. R., (1971) I.r. spectroscopic evidence for interaction between hydronium ions and lattice OH groups in montmorillonite Clays and Clay Minerals 19 55–59.CrossRefGoogle Scholar
Shainberg, I. and Kemper, W. D., (1966) Hydration status of adsorbed cations Soil Sci. Am. Proc. 30 707–713.CrossRefGoogle Scholar
Walker, G. F., (1955) The mechanism of dehydration of Mg-vermiculite Clays and Clay Minerals, 4th Nat. Conf. 101–115.Google Scholar
Yariv, S. and Heller-Kallai, L., (1973) I.r. evidence for migration of protons in H and organo-montmoril-lonites Clays and Clay Minerals 21 199–200.10.1346/CCMN.1973.0210309CrossRefGoogle Scholar