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The thermal decomposition of some Cr(III) complexes

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Abstract

The thermal decomposition reactions of the following chromium(III) complexes were investigated: Cr(CH3COO)3·2 H2O, [Cr3O(CH3COO)6(H2O)3]Cl·2 H2O and [Cr3O(CH2ClCOO)6(H2O)3]Cl·6H2O. Simultaneous TG/DTG/DTA were applied nonisothermal conditions. From the recorded curves, the activation energiesE a were calculated for all the thermal decomposition steps. Appropriate chemical reactions were attributed to the thermal effects, with consideration to the X-ray diffraction and IR spectra results.

Zusammenfassung

Für die Untersuchung der thermischen Zersetzungsreaktion der Chrom(III)-Komplexe Cr(CH3COO)3·2H2O [Cr3O(CH3COO)6·(H2O)3]Cl2H2O und [Cr3O(CH2ClCOO)6·(H2O)3]C16H2O wurde simultane TG/DTG/DTA unter nichtisothermen Bedingungen eingesetzt. Ausgehend von den aufgezeichneten Kurven wurden für alle Schritte der Zersetzungsreaktion die Ea-Werte berechnet. In Übereinstimmung mit röntgenographischen und IR-spektroskopischen Ergebnissen wurden den thermischen Effekten passende chemische Reaktionen zugeordnet.

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Authors and Affiliations

  1. Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Polytechnical University of Wroclaw, 50-370, Wroclaw, Poland

    M. Grotowska, R. Wojciechowska & W. Wojciechowski

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  1. M. Grotowska
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  2. R. Wojciechowska
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  3. W. Wojciechowski
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Grotowska, M., Wojciechowska, R. & Wojciechowski, W. The thermal decomposition of some Cr(III) complexes. Journal of Thermal Analysis 36, 2365–2373 (1990). https://doi.org/10.1007/BF01913634

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  • DOI: https://doi.org/10.1007/BF01913634

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