Apr 18 – 23, 2010
Casino Conference Centre
UTC timezone

Electrochemical behaviour of curium in chloride melts

Apr 19, 2010, 11:45 AM
1h 30m
Gallery (Casino Conference Centre)


Casino Conference Centre

Reitenbergerova 4/95, Marianske Lazne, Czech Republic
Board: TAN.P09
Poster Chemistry of Actinide and Trans-actinide Elements Poster Session - Chemistry of Actinide and Trans-actinide Elements


Mr Alexander Osipenko (Research Institute of Atomic Reactors)


Curium isotopes contained in spent nuclear fuel have a high specific heat rate and long half-life, and they should be recovered from high-level wastes (HLW) and transmutated. Molten chlorides have more high radiation resistance than aqueous and organic media. This fact is of significant importance because curium has a high specific activity. There is not much information about the behaviour of curium in molten chlorides. Data available are referred to the conventional standard potential of curium in the alloy formed with zinc [1] and distribution coefficient between salts and liquid metal phase [2]. Data on thermodynamics of formation for oxygen-containing curium compounds in chloride melts was obtained by authors [3] with using of potentiometric titration. This work is devoted to study of non-oxygen curium compound formation in chloride melts. The following standard electrochemical methods were used: CV, SWV, DPV, chrono potentiometry and dynamic galvanometry. Dependences of formal standard electrode potential of curium, Gibbs energy change and other parameters on temperature and effective radius of solvent cation were obtained. Also Pourbe diagrams were drawn. Study was carried out in frame of ISTC Project # 3261. The authors express their appreciation to CEIMAT (Spain), ITU (Germany), CEA (France) and AlbaNova University Centre Royal Institute of Technology Nuclear and Reactor Physics (Sweden) for support and interest to this work. 1. V.P.Kolesnikov, V.N. Kazantsev, O.V.Skiba Electrochemical behavior of americium and curium in molten alkali metal chlorides. Radiochemistry, 1977, 19, No.4, pp. 545–548 2. T.Koyama., et al.:J.Alloys Compounds, 189,37 (1992). 3. A.G. Osipenko, A.A. Mayorshin, A.V. Bychkov Study of Reaction of Curium Oxy-Compound Formation in Molten Chlorides//Radiochimica Acta 97,227-230(2009)

Primary author

Mr Alexander Osipenko (Research Institute of Atomic Reactors)


Dr Alexander Bychkov (Research Institute of Atomic Reactors) Mr Mikhail Kormilitsyn (Research Institute of Atomic Reactors)

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