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Specific Features of Electrochemical Oxidation of Pu(III) in a Diaphragmless Cell in Hydrazine-Containing Nitric Acid Solutions

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Abstract

Oxidation of Pu(III) in a diaphragmless cell with a Ti cathode and a Pt anode in 1.0–3.9 M HNO3 solutions containing 4.5 × 10−2–1.8 × 10−1 M hydrazine was studied. The final solutions contain, along with Pu(IV), also a small amount of Pu(VI), increasing with an increase in the current density. Methods allowing minimization of the Pu(VI) amount in the solutions after the electrolysis were suggested. The possible process mechanism involving reactions of Pu ions at the electrodes and in the bulk of the solution with HNO2 was considered.

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Authors and Affiliations

  1. Bochvar High-Tech Institute of Inorganic Materials, ul. Rogova 5a, Moscow, 123060, Russia

    V. I. Marchenko & K. N. Dvoeglazov

Authors
  1. V. I. Marchenko
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  2. K. N. Dvoeglazov
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Correspondence to K. N. Dvoeglazov.

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The authors declare that they have no conflict of interest.

Russian Text © The Author(s), 2019, published in Radiokhimiya, 2019, Vol. 61, No. 4, pp. 320–323.

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Marchenko, V.I., Dvoeglazov, K.N. Specific Features of Electrochemical Oxidation of Pu(III) in a Diaphragmless Cell in Hydrazine-Containing Nitric Acid Solutions. Radiochemistry 61, 443–446 (2019). https://doi.org/10.1134/S1066362219040076

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  • DOI: https://doi.org/10.1134/S1066362219040076

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