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The electrochemical behaviour of La, Nd and Am has been investigated in molten LiCl-KCl eutectic. La shows a reversible single reduction/oxidation step controlled by mass transfer. The electrochemical reduction of Nd and Am proceeds via a two step process, i.e. the reduction of trivalent species (Nd(III) and Am(III) leading to Nd(Il) and Am(Il) species which are reduced at more negative potentials to form metallic deposits. Diffusion coefficients have been calculated and are in reasonable agreement with literature data. Electro-depositions of La and Nd have been carried out onto solid Ni and liquid Cd cathodes. Much higher deposition efficiency is obtained for La compared to Nd on a solid cathode. This is an effect of the multivalent nature of Nd in the chloride melts.

Additional information

Authors: PERNEL C, EC-JRC,ITU Karlsruhe (DE);OUGIER M, EC-JRC,ITU Karlsruhe (DE);MALMBECK R, EC-JRC,ITU Karlsruhe (DE);GLATZ J.P, EC-JRC,ITU Karlsruhe (DE)
Bibliographic Reference: An oral report given at: International Meeting on the Back End of the Fuel Cycle: From Research to Solitions (GLOBAL 2001). Held at: Paris (FR), 9-13 September (2001)
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