Titanate ceramics for immobilisation of uranium-rich radioactive wastes arising from 99Mo production

Pyrochlore based glass-ceramics for the immobilization of actinide-rich nuclear wastes: From concept to reality

“…of U in the pyrochlore phase. In addition, CaF 2 was also added as it is a wellknown processing chemical commonly existing in some Pu residue wastes [21] as well as the intermediate level radioactive wastes arising from the production of 99 Mo [22].…”

Crystal structure and non-stoichiometry of cerium brannerite: Ce0.975Ti2O5.95

“…Synthetic titanate brannerites, ideally MTi 2 O 6 (M¼U, Th, Ce), are of interest as actinide host phases in multi-component ceramics, such as the Synroc phase assemblage and special purpose pyrochlore formulations, for the immobilisation of radioactive wastes and excess weapons plutonium [1][2][3][4][5][6]. Natural brannerite, ideally UTi 2 O 6 , is an important accessory phase in uranium mineral ores and is mined as the principal ore mineral in some localities [7].…”

The Structural Characterization of a Series of Uranium-containing Gadolinium Zirconates

“…DRS has previously been used to qualitatively probe the uranium valence states in mixed oxide systems [10,[21][22][23]. DRS has previously been used to qualitatively probe the uranium valence states in mixed oxide systems [10,[21][22][23].…”