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Zhang, Huan; Newton, Matthew L; Hamilton, D. Ethan; Simpson, Michael F
Journal of radioanalytical and nuclear chemistry, 01/2022, Letnik: 331, Številka: 1Journal Article
We report the successful infusion of molten salt mixtures containing LiCl-KCl, NaCl, and NaCl-CaCl.sub.2 with UCl.sub.3 via reaction of U metal with iron chlorides (FeCl.sub.2 and FeCl.sub.3). Reaction in LiCl-KCl and NaCl-CaCl.sub.2 resulted in a yield of 93% and 96.7% using FeCl.sub.2 at 500 and 600 °C, respectively. Reaction to form NaCl-UCl.sub.3 at 850 °C had a yield of 70.6%. Volatilization of the oxidant may explain low yields. Reaction with the more volatile FeCl.sub.3 in NaCl-CaCl.sub.2 at 600 °C resulted in 80.7% yield. Open circuit potential measurements were made and yielded values consistent with very high selectivity for UCl.sub.3 rather than UCl.sub.4.
