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The interconversion of orthorhombic chromium oxy-hydroxide and chromium dioxide

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Abstract

The thermal behaviour of CrOOH and CrO2 in different atmospheres has been studied by means of DTA, TG and X-ray diffraction. The easy interconversion between the two substances at one atmosphere pressure is explained on the basis of the results obtained.

Résumé

Étude du comportement thermique de CrOOH et de CrO2 dans différentes atmosphères, par ATD, TG et diffraction de rayons X. Interprétation de l'interconversion légère entre les deux substances sous une pression d'une atmosphère.

Zusammenfassung

Es wurde das thermische Verhalten von CrOOH und CrO2 in verschiedenen Atmosphären mit Hilfe der Differentialthermoanalyse, Thermogravimetrie und Röntgendiffraktion untersucht und auf Grund der Ergebnisse die leichte Umwandlung wischen den zwei Verbindungen unter 1 Atm. Druck erklärt.

Резюме

Термическое поведен ие СООН и СlO2 при различном давлении и зучено с помощью ДТА, ТГ и рент ген-дифракции. На осно вании полученных результа тов объяснены небольшие превращения, происхо дящие между этими двумя вещества ми при данном давлении.

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Author information

Authors and Affiliations

  1. Brunel University, Uxbridge, Middlesex, England

    K. S. W. Sing

  2. Institute for Inorganic Chemistry, C.S.I.C., Madrid, Spain

    M. A. Alario Franco

Authors
  1. M. A. Alario Franco
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  2. K. S. W. Sing
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Additional information

Thanks are due to Prof. Dr. S. C. Bevan of Brunei University and to Dr. E. Hockings of RCA (USA) for valuable discussions, and also to the D.G.E.S.I. (Spain) for a grant (to M.A.A.F.).

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Franco, M.A.A., Sing, K.S.W. The interconversion of orthorhombic chromium oxy-hydroxide and chromium dioxide. Journal of Thermal Analysis 4, 47–52 (1972). https://doi.org/10.1007/BF02100949

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  • DOI: https://doi.org/10.1007/BF02100949

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