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Dissolution of UO2 in the N2O4-H2O system

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Abstract

The kinetics of the UO2 dissolution in the N2O4-H2O system was studied. At 25°C, the process is kinetically controlled, whereas at 55°C the process occurs initially under kinetic control (3 min) and then under diffusion-kinetic control. At 80°C, the process occurs exclusively under diffusion-kinetic control. The apparent activation energy was estimated at ∼39 kJ mol−1.

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Authors and Affiliations

  1. Khlopin Radium Institute, Research and Production Association, Federal State Unitary Enterprise, 2-i Murinskii pr. 28, St. Petersburg, 194021, Russia

    N. V. Ryabkova, A. A. Lumpov, V. A. Mikhalev, A. A. Murzin & A. Yu. Shadrin

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  1. N. V. Ryabkova
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  2. A. A. Lumpov
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  3. V. A. Mikhalev
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  4. A. A. Murzin
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  5. A. Yu. Shadrin
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Corresponding author

Correspondence to A. A. Lumpov.

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Original Russian Text © N.V. Ryabkova, A.A. Lumpov, V.A. Mikhalev, A.A. Murzin, A.Yu. Shadrin, 2010, published in Radiokhimiya, 2010, vol. 52, No. 4, pp. 339–341.

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Ryabkova, N.V., Lumpov, A.A., Mikhalev, V.A. et al. Dissolution of UO2 in the N2O4-H2O system. Radiochemistry 52, 399–402 (2010). https://doi.org/10.1134/S1066362210040132

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  • DOI: https://doi.org/10.1134/S1066362210040132

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