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Low temperature synthesis of calcium cobaltites in a solid state reaction

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Abstract

This paper presents synthesis of calcium cobaltites of the nominal composition of Ca3Co4O9 prepared by the solid state reaction. The reaction between CaCO3 and Co3O4 was investigated at 700–900 °C during 20 h and at 800 °C during 2–30 h. Mass changes, phase composition and Co+3, Co+4 content were examined. Stability of the calcined specimens was tested by DTA/TG. It was found that two phases: Ca3Co4O9 and Ca3Co2O6 were present as a result of calcinations above 800 °C. On the other hand, the temperature of 750 °C was too low for calcium cobaltites to be synthesized. Mono-phase material with Ca3Co4O9 phase was obtained after calcinations at 800 °C but non-stoichiometry of the compound and its relation to the calcinations time were found. Once synthesized, the compound was stable up to 900 °C.

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Authors and Affiliations

  1. Department of Materials Science, Silesian University of Technology, Krasińskiego 8, 40-019, Katowice, Poland

    Paweł Smaczyński, Małgorzata Sopicka-Lizer & Karolina Kozłowska

  2. University of Applied Sciences, Stegerwaldstrasse 39, 48565, Steinfurt, Germany

    Julian Plewa

Authors
  1. Paweł Smaczyński
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  2. Małgorzata Sopicka-Lizer
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  3. Karolina Kozłowska
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  4. Julian Plewa
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Correspondence to Małgorzata Sopicka-Lizer.

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Smaczyński, P., Sopicka-Lizer, M., Kozłowska, K. et al. Low temperature synthesis of calcium cobaltites in a solid state reaction. J Electroceram 18, 255–260 (2007). https://doi.org/10.1007/s10832-007-9069-7

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  • DOI: https://doi.org/10.1007/s10832-007-9069-7

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