Abstract
A thermal analysis of an acetohydroxamic acid solution in 12 M HNO3 was carried out. The activation energy, specific thermal effect, time and rate of the exothermic reaction, pre-exponential factor, starting temperature and self-heating value of the sample, pressure change and specific volume of released gases were determined. Under experimental conditions this reaction was found to occur in an autocatalytic mode. Based on experimental data, a kinetic equation for the reaction was derived, which was used to create a model of the reaction under various conditions. The reliability of the modeling results was verified by differential scanning calorimetry.
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ACKNOWLEDGMENTS
The study was carried out on the equipment of the Shared Use Center of the Institute of Physics Chemistry and Elecrochemistry of the Russian Academy of Sciences and on the unique scientific installation “Complex of radiation-chemical research” of the Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences.
Funding
The work was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation.
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Translated from Radiokhimiya, No. 5, pp. 403–309, October, 2023 https://doi.org/10.31857/S0033831123050015
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Kalistratova, V.V., Smirnov, A.V. & Belova, E.V. Simulation of Thermal Decomposition of Acetohydroxamic Acid Nitrate Solution upon SNF Reprocessing. Radiochemistry 65, 523–529 (2023). https://doi.org/10.1134/S1066362223050016
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DOI: https://doi.org/10.1134/S1066362223050016