Voltammetry of Uranium and Plutonium in Molten LiCl ‐ NaCl ‐ CaCl2 ‐ BaCl2 : I . Reduction of U(III) to Uranium Metal1

The electrochemical reduction of U(III) to uranium metal in molten electrolyte was investigated, using cyclic voltammetry. The reaction is reversible and controlled by diffusion mass transfer, both at low‐carbon steel and molybdenum electrodes. The rate increased with concentration up to about 3.4 mole percent and with temperature over the range of 435°–528°C. Standard potentials ranged from −1.07 to −1.50V vs. ; the U(III) diffusion coefficients were between .