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Metastable Phase Equilibrium in the Aqueous Ternary System K2SO4+MgSO4+H2O at (288.15 and 308.15) K
Deng, Tianlong1,2; Yu, Xue1; Li, Dongchan1,2
2009
发表期刊JOURNAL OF SOLUTION CHEMISTRY
卷号38期号:1页码:27-34
文章类型Article
摘要The metastable solubilities and densities of the aqueous ternary system K2SO4+MgSO4+H2O at (288.15 and 308.15) K were determined with the isothermal evaporation method. Using the experimental results, the metastable phase diagram and the densities versus composition diagram were plotted. In the metastable phase diagrams of the ternary system at (288.15 and 308.15) K, there are in all two invariant points, three univariant solubility curves, and three metastable crystallization regions corresponding to arcanite (i.e., anhydrous potassium sulfate, K2SO4), picromerite (K2SO4 center dot MgSO4 center dot 6H(2)O) and epsomite (MgSO4 center dot 7H(2)O) that are formed in the metastable equilibrium system. A comparison of the stable and metastable phase diagrams at each temperature shows that the metastable regions of magnesium sulfate are obvious, and the crystallizing regions of epsomite and arcanite are much larger than those in the stable phase diagram. The densities of the system changed regularly with the magnesium sulfate content. The resulting information can be used to recover potassium or remove magnesium. The calculated densities using an empirical equation agree well with the experimental results.
关键词Metastable Phase Equilibrium Phase Diagram Solubility Potassium Sulfate Picromerite
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]QUATERNARY SYSTEM ; QUINARY SYSTEM ; MG2+//CL ; NA+
收录类别SCI
语种英语
WOS研究方向Chemistry
WOS类目Chemistry, Physical
WOS记录号WOS:000261342600003
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/5903
专题青海盐湖研究所知识仓储
作者单位1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
2.Chengdu Univ Technol, Coll Mat Chem & Chem Engn, Chengdu 610059, Peoples R China
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GB/T 7714
Deng, Tianlong,Yu, Xue,Li, Dongchan. Metastable Phase Equilibrium in the Aqueous Ternary System K2SO4+MgSO4+H2O at (288.15 and 308.15) K[J]. JOURNAL OF SOLUTION CHEMISTRY,2009,38(1):27-34.
APA Deng, Tianlong,Yu, Xue,&Li, Dongchan.(2009).Metastable Phase Equilibrium in the Aqueous Ternary System K2SO4+MgSO4+H2O at (288.15 and 308.15) K.JOURNAL OF SOLUTION CHEMISTRY,38(1),27-34.
MLA Deng, Tianlong,et al."Metastable Phase Equilibrium in the Aqueous Ternary System K2SO4+MgSO4+H2O at (288.15 and 308.15) K".JOURNAL OF SOLUTION CHEMISTRY 38.1(2009):27-34.
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