Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-13T01:13:08.454Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthetic Kaolinites Doped with Fe2+ and Fe3+ Ions

Published online by Cambridge University Press:  01 July 2024

B. R. Angel ,
A. H. Cuttler ,
K. S. Richards  and
W. E. J. Vincent
B. R. Angel
Affiliation:
Department of Mathematical Sciences, Plymouth Polytechnic, Plymouth, Devon, England
A. H. Cuttler
Affiliation:
Department of Mathematical Sciences, Plymouth Polytechnic, Plymouth, Devon, England
K. S. Richards
Affiliation:
Department of Mathematical Sciences, Plymouth Polytechnic, Plymouth, Devon, England
W. E. J. Vincent
Affiliation:
Department of Mathematical Sciences, Plymouth Polytechnic, Plymouth, Devon, England
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.

Previous studies by Electron Spin Resonance (ESR) have established the substitution of Fe3+ and Mg2+ in the kaolinite structure. It is shown that Fe2+ can substitute in kaolinite and stabilize defects which are detectable by ESR in a manner identical to Mg2+. The development of methods of preparing a synthetic kaolinite doped with Fe2+ is described in detail. It is shown that the main ESR signals, which occur at g = 2.0 in natural kaolinites and which previously have been interpreted in terms of iron and magnesium, can be attributed to iron alone.

Type
Research Article
Information
Clays and Clay Minerals , Volume 25 , Issue 6 , December 1977 , pp. 381 - 383
Copyright
Copyright © Clay Minerals Society 1977

References

Angel, B. R. and Hall, P. L. (1972) Electron spin resonance studies of kaolin. Proc. Int. Clay Conf., Madrid, pp. 47–59.Google Scholar
Angel, B. R., Hall, P. L. and Jones, J. P. E. (1974) Electron spin resonance studies of doped synthetic kaolinites I & II. Clay Minerals 247–270.CrossRefGoogle Scholar
Castner, T., Newell, G., Holton, W. C. and Slichter, C. P. (1960) Note on the paramagnetic resonance of iron in glass. J. Chem. Phys. 32, 668–673.CrossRefGoogle Scholar
Griffiths, J., Owen, J. and Ward, I. (1955) Magnetic resonance in irradiated diamond and quartz: In Report of Defects in Crystalline Solids (Bristol), pp. 81–87. Phys. Soc., London.Google Scholar
Hall, P. L. (1973) Electron spin resonance studies of aluminosilicate minerals and associated organic substances. Ph.D. thesis, University of London.Google Scholar
Hall, P. L., Angel, B. R. and Braven, J. (1974) Electron spin resonance studies of lignite and ball clay from South Devon, England. Chem. Geol. 13, 96–113.CrossRefGoogle Scholar
Joffe, V. and Yancherskaya, I. (1967) Study of the thermoluminescence and electron paramagnetic resonance of irradiated aluminium silicates. Opt. Spectrosk.Google Scholar
Marfunin, A., Bershov, L. and Idel, E. S. (1970) The true structure and electron hole centres of minerals. Fedrova Sovrem, Kristall Mineral, Leningrad, 186–206.Google Scholar
Orten, J. S. (1968) Electron Paramagnetic Resonance. Pitman, London.Google Scholar