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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
Source PublicationRUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
Volume91Issue:7Pages:1255-1259
SubtypeArticle
AbstractThe 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.
KeywordPhase Equilibria Purification Re-crystallization Magnesium Chloride Sodium Chloride
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000403501200015
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6218
Collection青海盐湖研究所知识仓储
盐湖资源与化学实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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