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Thermal Analysis of Cobalt(II) Salts with some Carboxylic Acids

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Abstract

The thermal analysis of CoC2O4·2H2O, Co(HCOO)2·2H2O and Co(CH3COO)2·4H2O was carried out with simultaneous TG-DTG-DTA measurements under non-isothermal conditions in air and argon atmospheres. The intermediates and the end products of decomposition were characterised by X-ray diffraction and IR and UV-VIS spectroscopy. The decomposition of the studied compounds occur in several stages. The first stage of dissociation of each compound is dehydration both in air and argon. The next stages differ in air and argon. The final product of the decomposition of each compound in air is Co3O4. In argon it is a mixture of Co and CoO for cobalt(II) oxalate and cobalt(II) formate but CoO for cobalt(II) acetate.

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Authors and Affiliations

  1. Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Technical University of Wroclaw, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland

    E. Ingier-Stocka & A. Grabowska

Authors
  1. E. Ingier-Stocka
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  2. A. Grabowska
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Ingier-Stocka, E., Grabowska, A. Thermal Analysis of Cobalt(II) Salts with some Carboxylic Acids. Journal of Thermal Analysis and Calorimetry 54, 115–123 (1998). https://doi.org/10.1023/A:1010116902412

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  • DOI: https://doi.org/10.1023/A:1010116902412

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