Coprecipitation of actinide peroxide salts in the U–Th and U–Pu systems and their thermal decomposition

Abstract

Uranium and plutonium coconversion process constitutes a continuous subject of interest for MOx fuel fabrication. Among the various routes considered, chemical coprecipitation by salt effect has been widely investigated regarding...

Chronicles of plutonium peroxides: spectroscopic characterization of a new peroxo compound of Pu(iv)

“…and the decomposition of nitrates (4225 1C) or sulfates (4550 1C). 11,13,38,42 Mass loss calculations confirmed a double amount of NO 3 À in comparison to SO 4…”

“…S5, ESI†) evidenced three domains attributed to the release of H 2 O molecules (<125 °C), followed by the decomposition of O 2 2− ligands (125–225 °C) and the decomposition of nitrates (>225 °C) or sulfates (>550 °C). 11,13,38,42 Mass loss calculations confirmed a double amount of NO 3 − in comparison to SO 4 2− , assuming that the Pu core of the green peroxo compound exhibits a positive charge of +2 (ESI†).…”