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Study of the structure and thermal behaviour of intercalated kaolinites

  • Geosciences
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Abstract

Intercalation complexes of three different Hungarian kaolinites with hydrazine and potassium acetate were investigated by FT-IR (DRIFT) spectrometry, X-ray diffraction, and thermogravimetry combined with mass spectrometry. Differences were found in the thermal behaviour of the complexes as well as in the rehydration — reexpansion patterns of the heated intercalates. An XRD method is proposed for the distinction of kaolinite and 7.2 Å halloysite present in the same mineral.

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Authors and Affiliations

  1. Department of Analytical Chemistry, University of Veszprém, P.O. Box 158, H-8201, Veszprém

    J. Kristóf

  2. Research Laboratory of Geochemistry of the Hungarian Academy of Sciences, P.O. Box 132, H-1112, Budapest

    M. Tóth

  3. Institute of Inorganic and Analytical Chemistry, L. Eötvös University, P.O. Box 32, H-1518, Budapest

    M. Gábor

  4. Research Laboratory of Inorganic Chemistry, Hungarian Academy of Sciences, P.O.Box 132, H-1112, Budapest, Hungary

    P. Szabó

  5. Centre for Instrumental and Developmental Chemistry, Queensland University of Technology, 2 George Street, G.P.O. Box 2434, Q 4001, Brisbane, Australia

    R. L. Frost

Authors
  1. J. Kristóf
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  2. M. Tóth
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  3. M. Gábor
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  4. P. Szabó
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  5. R. L. Frost
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Additional information

The authors wish to thank Dr. E. Máttyás for providing the kaolinite samples and for carrying out their chemical analysis. Financial support from the Hungarian Scientific Research Fund under grant No. OTKA-014179 is gratefully acknowledged.

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Kristóf, J., Tóth, M., Gábor, M. et al. Study of the structure and thermal behaviour of intercalated kaolinites. Journal of Thermal Analysis 49, 1441–1448 (1997). https://doi.org/10.1007/BF01983703

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  • DOI: https://doi.org/10.1007/BF01983703

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