Phase behavior of tetramethylurea plus MCl (M = Na, K, Rb, Cs) + H2O systems at 288.2, 298.2 and 308.2 K

被引:3
作者
Cao, Xiaoyue [1 ]
Chang, Yahui [2 ]
Li, Shuni [1 ]
Zhai, Quanguo [1 ]
Jiang, Yucheng [1 ]
Hu, Mancheng [1 ]
机构
[1] Shaanxi Normal Univ, Sch Chem & Chem Engn, Key Lab Macromol Sci Shaanxi Prov, Xian 710062, Shaanxi, Peoples R China
[2] Shaanxi Noma Univ, Sch Educ, Xian 710062, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
MCl; (M; Na; K; Rb; Cs); Tetramethylurea; Phase equilibria; Density; Refractive index; AQUEOUS 2-PHASE SYSTEMS; LIQUID-LIQUID EQUILIBRIUM; WATER TERNARY-SYSTEMS; VOLUMETRIC PROPERTIES; REFRACTIVE-INDEX; VAPOR-PRESSURES; SODIUM-CHLORIDE; SOLUBILITY; TEMPERATURES; MIXTURES;
D O I
10.1016/j.jct.2020.106058
中图分类号
O414.1 [热力学];
学科分类号
摘要
For this article, we investigated the phase behavior and physicochemical properties of the ternary systems MCl (M = Na, K, Rb, Cs) + tetramethylurea (TMU) + H2O at temperatures of 288.2, 298.2 and 308.2 K. For (solid-liquid) equilibrium (SLE) systems (NaCl/KCl/RbCl + TMU + H2O at three temperatures and CsCl + TMU + H2O at 288.2 K), the density, solubility and refractive index about the saturated solutions was obtained. About (liquid-liquid) equilibrium (LLE) systems (CsCl + TMU + H2O at 298.2 and 308.2 K), the binodal curves and tie lines were obtained. The three parameter equation, Othmer-Tobias and Bancroft equations were used to correlate the SLE and LLE data. (C) 2020 Elsevier Ltd.
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页数:9
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