The anodic dissolution of uranium dioxide—I in perchlorate solutions

The anodic dissolution of uranium dioxide in perchlorate solution has been studied. Steady-state and potentiostatic and cyclic voltammetric measurements have been shown to be consistent with a mechanism that involves successive electron-transfer reactions. The presence of insulating uranium (VI) films on the surface at high anodic potentials has been confirmed by measurements with ring-disc electrodes. A comparative study of the behaviour of several samples of differing stoichiometry, crystallinity and porosity has revealed the existence of considerable solid-state effects, the origin of which is not clear

The anodic dissolution of uranium dioxide—II. In carbonate solutions

The anodic dissolution of uranium dioxide in alkaline carbonate solutions has been studied. Steady-state potentiostatic and cyclic voltammetric measurements have been shown to be consistent with a mechanism that involves a rate-determining two-electron transfer reaction. The presence of insulating uranium(VI) films on the surface at high anodic potentials has been confirmed by the use of ring-disc electrode measurements and characterized by X-ray-diffraction analyses. The dissolution behaviour of the films has been characterized and compared with that of samples of synthetic uranium trioxide and uranyl carbonate

Measuring rates of dissolution

No abstract availabl

Electrochemical model for the leaching of uranium dioxide.

No abstract availabl

The industrial application of a uranium dioxide electrode

No abstract availabl