Abstract
Thermal decomposition of Cr(NO3)3·9H2O in helium and in synthetic air was studied by means of TG, DTA, EGA and XRD analysis. The dehydration occurs together with decomposition of nitrate(V) groups. Eight distinct stages of reaction were found. Intermediate products of decomposition are hydroxy- and oxynitrates containing chromium in hexa- and trivalent states. The process carried out in helium leads to at about 260°C and in air is formed at about 200°C. The final product of decomposition (>450°C) is Cr2O3, both in helium and in air.
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Małecki, A., Małecka, B., Gajerski, R. et al. Thermal decomposition of chromium(III) nitrate(V) nanohydrate. Journal of Thermal Analysis and Calorimetry 72, 135–144 (2003). https://doi.org/10.1023/A:1023915618876
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DOI: https://doi.org/10.1023/A:1023915618876