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Chemical oxidation of the components of extraction solutions and critical parameters of heat explosion

I. Kinetics of the interaction between TBP and nitric acid

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Abstract

Thermochemical interaction of TBP with nitric acid in single-phase organic systems has been studied at the concentrations of HNO3 1.4 to 5.6M, in temperature range of 110–140 °C. The termochemical oxidation of TBP includes a number of consecutive and concurrent reactions, such as acid hydrolysis, the oxidation of the TBP hydrolysis products, and TBP destructive oxidation. Some of these reactions can proceed with heat explosion. The limiting temperature (120–130 °C) and acid concentration (2.5 mol/l) at which the oxidation reactions are able to transform to heat explosion have been estimated. The rate constants and activation energies were determined for the reactions presenting a potential hazard.

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Authors and Affiliations

  1. Institute of Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 117071, Moscow, Russia

    V. E. Kazarinov, G. F. Egorov & O. P. Afanas'ev

  2. Military Academy of Chemical Protection, Moscow, Russia

    E. R. Nazin

Authors
  1. V. E. Kazarinov
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  2. G. F. Egorov
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  3. O. P. Afanas'ev
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  4. E. R. Nazin
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Kazarinov, V.E., Egorov, G.F., Afanas'ev, O.P. et al. Chemical oxidation of the components of extraction solutions and critical parameters of heat explosion. J Radioanal Nucl Chem 218, 87–92 (1997). https://doi.org/10.1007/BF02033979

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  • DOI: https://doi.org/10.1007/BF02033979

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