Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-05T14:55:21.545Z Has data issue: false hasContentIssue false
  • English
  • Français

Electron spin resonance studies of halloysites

Published online by Cambridge University Press:  09 July 2018

N. Chaikum  and
R. M. Carr
N. Chaikum
Affiliation:
Chemistry Department, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
R. M. Carr
Affiliation:
Chemistry Department, Otago University, P.O. Box, 56, Dunedin, New Zealand
Get access Rights & Permissions [Opens in a new window]

Abstract

Absorption lines in the g ∼ 4 region of ESR spectra of three New Zealand halloysites were found to originate from similar paramagnetic centres as in kaolinites. Resonances in the g ∼ 4 region were not common to all the halloysites, although the signal at g = 2·0 for the Matauri Bay halloysite is probably due to a trapped positive hole or trapped ion. A 6-line resonance produced by Te Puke halloysite and removable by Na-saturation is attributed to exchangeable Mn on the clay surface. Low-temperature lines exhibited by all samples are due to V4+ or VO2+ replacing Al3+ in the octahedral sheet.

Type
Research Article
Information
Clay Minerals , Volume 22 , Issue 3 , September 1987 , pp. 287 - 296
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1987

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

Angel, B.R. & Hall, P.L. (1973) Electron spin resonance studies of kaolins. Proc. Int. Clay Conf. Madrid, 47- 60.Google Scholar
Angel, B.R., Richards, K. & Jones, J.P.E. (1976) The synthesis, morphology and general properties of kaolinites specifically doped with metallic ions and defects generated by irradiation. Proc. Int. Clay Conf. Mexico City, 297-304.Google Scholar
Carr, R.M., Chaikum, N. & Peake, B.M. (1977) An electron spin resonance study of some clay minerals. New Zealand Dep. Sci. Ind. Res. Bull. 218, 138–144.Google Scholar
Castner, T., Newell, G.S., Holton, W.C. & Slichter, C.P. (1960) Note on the paramagnetic resonance of iron in glass. J. Chem. Phys. 32, 668–673.CrossRefGoogle Scholar
Chaikum, N., Sooppipat, N. & Carr, R.M. (1981) The cation exchange capacities of some kaolin minerals. J. Sci. Soc. Thailand 7, 100–109.CrossRefGoogle Scholar
Deeds, C.T., Van Olphen, H. & Bradley, W.F. (1966) Intersalation and interlayer hydration of minerals of the kaolinite group. Proc. Int. Clay Conf. Jerusalem 2, 183–198.Google Scholar
Feigl, F. & Anger, V. (1972) Spot Tests in Inorganic Analysis, 6th ed., pp. 503–504, Elsevier, London.Google Scholar
Grim, R.E. (1968) Clay Mineralogy, p. 311. McGraw-Hill, New York.Google Scholar
Hall, P.L. (1980) The application of electron spin resonance spectroscopy to studies of clay minerals: I. Isomorphous substitutions and external surface properties. Clay Miner. 15, 321–335.CrossRefGoogle Scholar
Hall, P.L., Angel, B.R. & Braven, J. (1974) Electron spin resonance and related studies of lignite and ball clay from South Devon, England. Chem. Geol. 13, 97–113.CrossRefGoogle Scholar
Hutton, D.R. (1971) Paramagnetic resonance of VO2 +; Cr3+ and Fe3+ in zoisite. J. Phys. C: Solid State Phys. 4, 1251–1257.CrossRefGoogle Scholar
Jones, J.P.E., Angel, B.R. & Hall, P.L. (1974) Electron spin resonance studies of doped synthetic kaolinite. II. Clay Miner. 10, 257–270.CrossRefGoogle Scholar
Kemp, R.L. (1971) Orthorhombic iron centres in muscovite and phlogopite micas. J. Phys. C 4, L11–L13.CrossRefGoogle Scholar
Malden, P.J. & Meads, R.E. (1967) Substitution by iron in kaolinite. Nature 215, 844–846.CrossRefGoogle Scholar
Mank, V.V., Karushkina, A.Ia. , Ovcharenko, F.D. & Vasil'ev, N.G. (1974) Peculiarities of the EPR spectra of argillaceous minerals. Ann. SSSR Doklady (Earth Science Section) 218, 921–923.Google Scholar
Matyash, I. V., Polshin, E.V. & Kalinchenko, A.M. (1969) Investigation of the effect of thermal treatment on hydromica by radiospectroscopy. Geokhimiya 7, 840–845.Google Scholar
McBride, M.B., Pinnavaia, T.J. & Mortland, M.M. (1975) Perturbation of structural Fe3+ in smectites by exchange ions. Clays Clay Miner. 23, 103–108.Google Scholar
Nizamutdinov, N.M. & Vinokurov, V.M. (1969) Electron paramagnetic resonance of V4+ ions in lazurite. Geochem. Intern. 6, 69–71.Google Scholar
O'Reilly, D.E. (1958) Paramagnetic resonance of vanadyl etioporphyrin I. J. Chem. Phys. 29, 1188–1189.CrossRefGoogle Scholar
O'Reilly, D.E. (1959) Erratum: Paramagnetic resonance of vanadyl etioporphyrin I. J. Chem. Phys. 30, 591.CrossRefGoogle Scholar
Roberts, E.M., Koski, W.S. & Caughey, W.S. (1961) Electron spin resonance of some vanadyl porphyrins. J. Chem. Phys. 34, 591–593.CrossRefGoogle Scholar
Roy, R., Roy, D.M. & Francis, E.E. (1955) New data on thermal decomposition of kaolinite and halloysite. J. Am. Chem. Soc. 38, 198–205.Google Scholar
Searl, J.W., Smith, R.C. & Wyard, S.J. (1959) Electron spin resonance absorption for polycrystalline substances. Proc. Phys. Soc. (London) 74, 491–493.CrossRefGoogle Scholar
Wada, K. (1961) Lattice expansion of kaolin minerals by treatment with potassium acetate. Am. Miner. 46, 78– 91.Google Scholar