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Catalytic Decomposition of Cobalt (III) Hexammine Cations on the Surface of Montmorillonite

Nature volume 196, pages 161–162 (1962)Cite this article

Abstract

THE stability of crystalline cobalt (III) hexammine chloride up to 100° C and in solution is well known1. Morel2 has proposed the use of Co(NH3)3+6 for the determination of the cationic exchange capacity of clay. The fast colorimetric determination of an excess of reagent would provide an accurate routine analysis for cationic exchange capacity of clay minerals such as kaolinite and montmorillonite ; this method gives results in agreement with the classical ones, but with an alumino-silicate gel (cracking catalyst) steric hindrance precludes such an agreement.

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Authors and Affiliations

  1. Centre National de la Recherche Agronomique, Versailles, Seine-et-Oise, France

    J. CHAUSSIDON & R. CALVET

  2. Laboratoire des colloïdes et de chimie minérale, Institut Agronomique, Université de Louvain, Héverlé, Belgium

    J. HELSEN & J. J. FRIPIAT

Authors
  1. J. CHAUSSIDON
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  2. R. CALVET
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  3. J. HELSEN
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  4. J. J. FRIPIAT
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CHAUSSIDON, J., CALVET, R., HELSEN, J. et al. Catalytic Decomposition of Cobalt (III) Hexammine Cations on the Surface of Montmorillonite. Nature 196, 161–162 (1962). https://doi.org/10.1038/196161a0

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