Solid-liquid phase equilibria of the two ternary systems （NaCl＋SrCl2＋H2O） and （KCl＋SrCl2＋H2O） at T=288.15 K and p=0.1 MPa were studied using the isothermal dissolution equilibritma method. Solubilities of the ...Solid-liquid phase equilibria of the two ternary systems （NaCl＋SrCl2＋H2O） and （KCl＋SrCl2＋H2O） at T=288.15 K and p=0.1 MPa were studied using the isothermal dissolution equilibritma method. Solubilities of the equilibrium liquid phase were determined, and the solids were also investigated by the Schreinemaker method of wet residues. In the ternary system （NaCl＋SrCl2＋H2O） at 288.15 K, there is one invariant point corresponding to （NaCl＋SrCl2-6H2O） and two crystallization regions corresponding to NaC1 and SrCl2-6H2O. The crystallized area of SrCl2-6H2O decreased with the increasing temperature, while that of NaCl increased slightly. In the ternary system （KCl＋SrCl2＋H2O） at 288.15 K, there is one invariant point（KCl＋SrCl2.6H2O） and two crystallization regions cor- responding to KCl and SrCl2· 6H2O. Both systems belong to a simple eutectic type, and neither double salts nor solid solutions were formed. On the basis of Pitzer-Harvie-Weare model, the solubilities of the two systems at 288.15 K were demonstrated. A comparison showed that the calculated solubilities agreed well with the experimental data.展开更多
基金Supported by the National Natural Science Foundation of China（Nos.21406048, U1507109）, the Natttral Science Foundation of Hebei Province, China（No.B2017202198）, and the Natural Science Foundation of Tianjin, China（Nos.17JCYBJC19500, 15JCQNJC06100）.
文摘Solid-liquid phase equilibria of the two ternary systems （NaCl＋SrCl2＋H2O） and （KCl＋SrCl2＋H2O） at T=288.15 K and p=0.1 MPa were studied using the isothermal dissolution equilibritma method. Solubilities of the equilibrium liquid phase were determined, and the solids were also investigated by the Schreinemaker method of wet residues. In the ternary system （NaCl＋SrCl2＋H2O） at 288.15 K, there is one invariant point corresponding to （NaCl＋SrCl2-6H2O） and two crystallization regions corresponding to NaC1 and SrCl2-6H2O. The crystallized area of SrCl2-6H2O decreased with the increasing temperature, while that of NaCl increased slightly. In the ternary system （KCl＋SrCl2＋H2O） at 288.15 K, there is one invariant point（KCl＋SrCl2.6H2O） and two crystallization regions cor- responding to KCl and SrCl2· 6H2O. Both systems belong to a simple eutectic type, and neither double salts nor solid solutions were formed. On the basis of Pitzer-Harvie-Weare model, the solubilities of the two systems at 288.15 K were demonstrated. A comparison showed that the calculated solubilities agreed well with the experimental data.
