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The mechanism of thermal decomposition of Co(NO3)2 · 2H2O

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Abstract

The mechanism of thermal decomposition of Co(NO3)2 · 2H2O was found to involve stages in which Co(NO3)3 and Co2O3 · H2O are formed both of which decompose to Co3O4. During the process, the total cobalt enters the +3 oxidation state, which is consistent with the results reported by Mehandjiev [2].

Zusammenfassung

Es wurde gefunden, daß der Zersetzungsmechanismus von Co(NO3)2 · 2H2O Schritte umfaßt, bei denen Co(NO3)3 sowie Co2O3 · H2O gebildet werden, beides weiterzerfallend zu Co3O4. Während des Vorganges erreicht das Gesamtkobalt die Oxidationsstufe +3, was mit Ergebnissen von Mehandjiev übereinstimmt [2].

Резюме

Установлено, что меха низм термического разложения двугидра та нитрата кобальта включает стадии обра зования безводного н итрата трехвалентного коба льта и моногидрата оксида трехвалентно го кобальта, которые р азлагаются до CO3O4. Во бремя этого пр оцесса весь кобальт находится в т рехвалентном состоя нии, что согласается с ранее п риведенными в литературе данными.

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References

  1. D. Weigel, Bull. Soc. Chim., 4 (1964) 836.

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  2. D. Mehandjiev, E. Zhecheva and S. Angelov, Proc. 9th Int. Symp. Reactivity of solids, Cracow, 1980.

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Authors and Affiliations

  1. Institute of Materials Science, Academy of Mining and Metallurgy, AL. Mickiewicza 30, 30-059, Cracow

    A. Małecki, A. Małecka, R. Gajerski, B. Prochowska-Klisch & A. Podgórecka

  2. Institute of Catalysis, Polish Academy of Sciences, Niezapominajek 8, Cracow, Poland

    A. Małecka

Authors
  1. A. Małecki
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  2. A. Małecka
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  3. R. Gajerski
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  4. B. Prochowska-Klisch
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  5. A. Podgórecka
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Małecki, A., Małecka, A., Gajerski, R. et al. The mechanism of thermal decomposition of Co(NO3)2 · 2H2O. Journal of Thermal Analysis 34, 203–209 (1988). https://doi.org/10.1007/BF01913386

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  • DOI: https://doi.org/10.1007/BF01913386

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