A Novel Method for Trapping and Studying Volatile Molybdenum(V) in Alkali Chloride Melts: Implications for Treating Spent Nuclear Fuel

Molybdenum(V) Species in Alkali Chloride Melts: An Electronic Absorption Spectroscopy Study

“…After all solid MoCl 5 evaporated the absorption started to decrease. Rates of evaporation of Mo(V) chloride from alkali chloride melts was discussed previously (11). Recorded spectra were very similar in appearance to EAS of tungsten(V) ions that have a single transition in visible region, e.g.…”

“…One of molybdenum(V) species present in the melt after dissolution of molybdenum pentachloride can be molecular MoCl 5 . Indeed, if molybdenum pentachloride evaporates from the melt, as previous studies showed (11), then it is leaving the melt as a molecular species and there must be an equilibrium between ionic MoCl 6 and molecular MoCl 5 :…”

“…This allowed EAS of the solutions to be measured. More detailed description of the experimental technique for feeding volatile chlorides into molten salt with in situ spectroscopy measurements was given previously (11).…”

Separation of Uranium and Zirconium in Alkali Chloride Melts Using Liquid Metal Cathodes

“…Then the salts prepared were fused in the required proportion. Zirconium containing melts were obtained by dissolving zirconium tetrachloride (either commercially available or prepared by reacting metallic zirconium with chlorine) in the solvent salt using the approach described previously (16). Melts containing uranium chlorides were prepared by dissolving the required amount of anhydrous uranium tetrachloride or uranium trichloride in molten LiCl-KCl eutectic.…”