Simulation of Thermal Decomposition of Acetohydroxamic Acid Nitrate Solution upon SNF Reprocessing

A thermal analysis of an acetohydroxamic acid solution in 12 M HNO 3 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 re...

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Bibliographic Details
Published in:Radiochemistry (New York, N.Y.) N.Y.), 2023-10, Vol.65 (5), p.523-529
Main Authors: Kalistratova, V. V., Smirnov, A. V., Belova, E. V.
Format: Article
Language:English
Subjects:
Calorific value
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Exothermic reactions
Kinetic equations
Nuclear Chemistry
Reliability aspects
Reprocessing
Specific volume
Temperature effects
Thermal analysis
Thermal decomposition
Thermal simulation
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Summary:A thermal analysis of an acetohydroxamic acid solution in 12 M HNO 3 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.
ISSN:1066-3622
1608-3288
DOI:10.1134/S1066362223050016