A. B. Salyulev, V. Ya. Kudyakov, N. I. Moskalenko.
ABSTRACT
The volatility of saturated vapor components of molten UCl4–KCl and UCl4–NaCl mixtures containing 2, 5, 12, 25, 33, and 50 mol % UCl4 in the temperature range 880–1300 K was measured using a transpiration technique. The chemical composition of saturated vapors was determined. It is concluded that double compounds of the most probable composition KUCl5 and NaUCl5 are present in the vapor phase, making a significant contribution to the total vapor pressure. It was found that the investigated molten mixtures exhibit negative deviations from the ideal behavior, in the direction of lower volatility of uranium tetrachloride.
KEY WORDS:
evaporation, volatility, vapor pressure, molten salts, KCl, NaCl, UCl4.
DOI: 10.31857/S0235010621050121