Abstract
The solubility of the binary system (LiNO3+H2O) from T=273.15K to T=333.15K and solubility isotherms of the ternary system (LiCl+LiNO3+H2O) were elaborately measured at T=273.15K and T=323.15K. These solubility data, as well as water activities in the binary systems from the literature, were treated by an empirically modified BET model. The isotherms of the ternary system (LiCl+LiNO3+H2O) were reproduced and a complete phase diagram of the ternary system in the temperature range from 273.15K to 323.15K predicted. It is shown that the solubility data for the binary system (LiNO3+H2O) measured in this work are slightly different from the literature data. Simulated results showed that the saturated salt solution of (2.8LiCl+LiNO3) is in equilibrium with the stable solid phase LiNO3(s) over the temperature range from 283.15K to 323.15K, other than the solid phases LiNO3·3H2O(s) and LiClH2O(s) as reported by Iyoki et al. [S. Iwasaki, Y. Kuriyama. T. Uemura, J. Chem. Eng. Data 38 (1993) 396–398].
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