Phase Equilibrium and Solvation Effect of the Ternary Mixture Solvent System (LiCl + CH3OH + H2O) at 298.15, 308.15 and 318.15 K
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The solubility and physicochemical properties, including density and refractive index in the ternary mixture solvent system (LiCl + CH3OH + H2O) at 298.15, 308.15 and 318.15 K were determined using the isothermal equilibrium method. Based on the experimental data, the phase diagrams and physicochemical properties versus composition diagrams at different temperatures were plotted and compared. It was found that the isothermal phase diagram at each temperature consists of one invariant point (LiCl + LiCl·H2O), two univariant curves and two crystalline regions corresponding to LiCl·H2O and LiCl, respectively. The densities and refractive indices in the ternary mixture solvent system at each temperature change regularly with the increase of LiCl concentration. The calculated densities and refractive indices at the three temperatures agree well with the experimental results. The salting-out rate of LiCl solution increases gradually with the increase of CH3OH concentration at each temperature. The results obtained in this work can be used to produce anhydrous LiCl at relatively low temperatures, even room temperature.
KeywordsPhase equilibrium Ternary mixture solvent system Lithium chloride Methanol
This study was funded by the National Natural Science Foundation of China (Nos. U1607129 and U1607123); the China Postdoctoral Science Foundation (Nos. 2016M592827 and 2016M592828); the Foundation of Tianjin Key Laboratory of Marine Resources and Chemistry (No. 201601), the Foundation of Tianjin Engineering Center of Marine Chemical Engineering & Technology (No. hyhg201701), and the Yangtze Scholars and Innovative Research Team of the Chinese University (No. IRT_17R81).
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Conflict of interest
The authors declare that they have no conflict of interest.
- 5.Shao, G.L., Xiao, J.F., Tian, Z.H., Huang, J.J., Yuan, S.G.: Preparation and characterization of polyphenylene sulfide-based chelating resin-functionalized 2-amino-1,3,4-thiadiazole for selective removal Hg(II) from aqueous solutions. Polym. Advan. Technol. 29, 1030–1038 (2018)CrossRefGoogle Scholar
- 9.Pelsh, A.D.: Handbook of Experimental Data on Solubility Multi-Component Salt-Water Systems, vol. 1. Three-component System. Leningrad Publishing, Leningrad Department, Berkeley (1973)Google Scholar
- 12.Wei, D.Q., Lu, J.S., Zhu, J.J., Zhou, X.S.: Studies on salt effect of the isothermal vapour–liquid equilibrium-organic solvent–water–inorganic salt system at 298 K and 2.96 kPa–16.21 kPa. Acta Phys. Chim. Sin. 3, 520–523 (1987)Google Scholar
- 16.Deng, T.L., Zhou, H., Chen, X.: Salt–water system phase diagrams and applications. Chinese Chemical Industry Press, Beijing (2013)Google Scholar
- 22.Song, P.S., Du, X.H.: Study on the metastable equilibria and physicochemical property of the quaternary (Li2B4O7 + Li2SO4 + LiCl + H2O) at 298.15 K. Chin. Sci. Bull. 31, 1338–1343 (1986)Google Scholar
- 23.Speight, J.G.: Lange’s Handbook of Chemistry, 16th edn. McGraw–Hill, New York (2004)Google Scholar