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Phase diagram of the NaCl-MgCl2-H2O system at 25-75A degrees C and its application for MgCl2 center dot 6H(2)O purification
Han, Haijun1,2; Dong, Ouyang2; Li, Dongdong2; Zeng, Dewen1
2017-07-01
发表期刊RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
卷号91期号:7页码:1255-1259
文章类型Article
摘要The co-saturation line for the solid phases NaCl(s) and MgCl2 center dot 6H(2)O((s)) in aqueous solution has been measured by a phase equilibrium at various temperatures. It was found that the Y (b) (Y (b) = w(NaCl)/(w(NaCl) + w(MgCl2))) value of the co-saturation line increase with increasing temperature. A new recrystallization approach has been suggested for the purification of MgCl2 center dot 6H(2)O((s)) containing quite amount of impurity NaCl, i.e., dissolving the crude sample at low temperatures, followed by evaporating and phase separating at high temperatures. Applying the proposed approach a crude MgCl2 center dot 6H(2)O((s)) sample can be purified to the level of Y (b) = 0.17% by only one crystallization process.
关键词Phase Equilibria Purification Re-crystallization Magnesium Chloride Sodium Chloride
WOS标题词Science & Technology ; Physical Sciences
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:000403501200015
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6218
专题青海盐湖研究所知识仓储
盐湖资源与化学实验室
作者单位1.Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
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Han, Haijun,Dong, Ouyang,Li, Dongdong,et al. Phase diagram of the NaCl-MgCl2-H2O system at 25-75A degrees C and its application for MgCl2 center dot 6H(2)O purification[J]. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A,2017,91(7):1255-1259.
APA Han, Haijun,Dong, Ouyang,Li, Dongdong,&Zeng, Dewen.(2017).Phase diagram of the NaCl-MgCl2-H2O system at 25-75A degrees C and its application for MgCl2 center dot 6H(2)O purification.RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A,91(7),1255-1259.
MLA Han, Haijun,et al."Phase diagram of the NaCl-MgCl2-H2O system at 25-75A degrees C and its application for MgCl2 center dot 6H(2)O purification".RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 91.7(2017):1255-1259.
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