Simulation studies on metastable phase equilibria in the aqueous ternary systems (NaCl-MgCl2-H2O) and (KCl-MgCl2-H2O) at 308.15 K

被引：6

作者：

Deng T. ^{[1
,2
]}

Zhang B. ^{[2
]}

Li D. ^{[2
]}

Guo Y. ^{[1
]}

机构：

[1] Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences

[2] College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology

来源：

Frontiers of Chemical Engineering in China | 2009年 / 3卷 / 2期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

Green chemistry; Metastable phase equilibrium; Simulation; Solar pond technique; Solubility;

D O I：

10.1007/s11705-009-0048-1

中图分类号：

学科分类号：

摘要：

The solubilities and densities of the aqueous metastable ternary systems (NaCl-MgCl2-H2O) and (KCl-MgCl2- H2O) at 308.15 K were determined by the isothermal evaporation method. On the basis of the experimental results, the phase diagrams for those systems were plotted. It was found that the former system belongs to the hydrate-I type with one invariant point of (NaCl + MgCl2·6H2O), two univariant curves, and two crystallization regions corresponding to halite (NaCl) and bischo.te (MgCl26H2O); and the latter system belongs to the type of incongruent-double salts with two invariant points of (KCl + KCl·MgCl26H2O) and (MgCl2 ·6H2O + KCl·MgCl2 ·6H2O), three univariant curves, and three crystallization regions corresponding to potassium chloride (KCl), carnallite (KCl·MgCl2·6H2O) and bischofite (MgCl2·6H2O). No solid solutions were found in both systems. © Higher Education Press and Springer-Verlag GmbH 2009.

引用

页码：172 / 175

页数：3

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