Simulation of thermal decomposition of a nitric acid solution of acetohydroxamic acid during SNF reprocessing

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A thermal analysis of a solution of acetohydroxamic acid in 12 mol/L HNO3 was carried out. The activation energy, the speci c thermal e ect, the duration and rate of the exothermic reaction, the pre-exponential factor, the onset temperature and self-heating value of the sample, and the change in pressure and the speci c volume of the evolved gases were determined. It was shown that under experimental conditions this reaction proceeds in the autocatalytic mode. On the basis of experimental data, a kinetic equation for the reaction was obtained, which was used to create a model of the reaction under various conditions. The reliability of the simulation results was veri ed by di erential scanning calorimetry.

Sobre autores

V. Kalistratova

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

A. Smirnov

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

E. Belova

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

Email: bl174@bk.ru

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