Ru-doped UO2 materials were synthesized via a sol–gel method and the resulting compounds were subjected to an oxidative heat treatment at 1000 °C. Both as-synthesized and oxidized materials were characterized coupling microscopy, diffraction and spectroscopic techniques. A detailed structural description of the studied compounds is provided. The oxidation of UO2 to U3O8 is complete within the investigated atmosphere and Ru is oxidized to volatile oxide forms.
Prieur et al. (Wed,) studied this question.