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Metastable phase equilibria in the aqueous ternary system (Na2SO4 + Li2SO4 + H2O) at 308.15 and 348.15 K
Guo, Y. F.1; Gao, D. L.1; Han, H. J.2; Shen, D. L.1; Wang, S. Q.1; Deng, T. L.1,2
2013-11-25
发表期刊FLUID PHASE EQUILIBRIA
卷号358页码:56-59
关键词Metastable Phase Diagram Solubility Lithium Sulfate Density
摘要The solubility and density of the metastable phase equilibria in the aqueous ternary system (Na2SO4 + Li2SO4 + H2O) at 308.15 and 348.15 K were determined using the isothermal evaporation method. On the basis of the experimental data, the metastable phase diagrams and the diagrams of density property versus composition in the system at 308.15 and 348.15 K were plotted. In the metastable phase diagram of the ternary system at 308.15 K, there is four crystallization regions corresponding to thenardite (Na2SO4, Th), double salt 1 (Li2SO4 center dot 3Na(2)SO(4)center dot 12H(2)O, Db1), double salt 2 (Li2SO4 center dot Na2SO4, Db2), and lithium sulfate monohydrate (Li2SO4 center dot H2O, Ls), four univariant curves, and three invariant points of the ternary system corresponding to (Th + Db1), (Db1 + Db2) and (Db2 + Ls). However, in the metastable phase diagram of the same ternary system at 348.15 K, the crystallization region of Db1 is disappeared, and there is only three crystallization regions corresponding to thenardite Th, Db2 and Ls. A comparison of the metastable phase diagrams for the ternary system at 308.15 and 348.15 K shows that the area of Th is increased whereas the area of Ls is decreased obviously and no solid solution was found. The solution density of the metastable ternary system at two temperatures changes regularly with the increasing of lithium sulfate concentration. (C) 2013 Elsevier B.V. All rights reserved.
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文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/4450
专题青海盐湖研究所知识仓储
中国科学院青海盐湖研究所
作者单位1.Tianjin Univ Sci & Technol, Tianjin Key Lab Marine Resources & Chem, Coll Marine Sci & Engn, Tianjin 300457, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
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Guo, Y. F.,Gao, D. L.,Han, H. J.,et al. Metastable phase equilibria in the aqueous ternary system (Na2SO4 + Li2SO4 + H2O) at 308.15 and 348.15 K[J]. FLUID PHASE EQUILIBRIA,2013,358:56-59.
APA Guo, Y. F.,Gao, D. L.,Han, H. J.,Shen, D. L.,Wang, S. Q.,&Deng, T. L..(2013).Metastable phase equilibria in the aqueous ternary system (Na2SO4 + Li2SO4 + H2O) at 308.15 and 348.15 K.FLUID PHASE EQUILIBRIA,358,56-59.
MLA Guo, Y. F.,et al."Metastable phase equilibria in the aqueous ternary system (Na2SO4 + Li2SO4 + H2O) at 308.15 and 348.15 K".FLUID PHASE EQUILIBRIA 358(2013):56-59.
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