CAS OpenIR
Water Activity and Solubility of the System MgCl2-RbCl-H2O at 323.15K
Li, Hongxia2; Guo, Lijiang1; Li, Jianqiang1
2019-03-01
Source PublicationJOURNAL OF SOLUTION CHEMISTRY
ISSN0095-9782
Volume48Issue:3Pages:367-378
AbstractThe water activities of the MgCl2-RbCl-H2O ternary system and its sub-binary systems have been measured with the isopiestic method at 323.15K. The measured water activities for the MgCl2-H2O and RbCl-H2O sub-binary systems agree well with the results reported in literature. The measured equal water activity lines of the MgCl2-RbCl-H2O ternary system are not straight lines, which means the mixing behavior of the solutions do not obey Zdanovskii's rule. The solubility of the MgCl2-RbCl-H2O ternary system has been determined with the Flow-Cloud-Point method at 323.15K, and the measured results are roughly consistent with values reported in the literature. The Pitzer model was selected to correlate the water activity and solubility data measured in this work. The predicted water activities and solubility isotherm for the MgCl2-RbCl-H2O ternary system at 323.15K, with binary solution parameters only, both deviated from the experiment values. The ternary solution Pitzer model parameters were obtained by fitting the measured water activities in the ternary system. The water activities and solubility isotherms of the MgCl2-RbCl-H2O ternary system at 323.15K were calculated including both binary and ternary solution parameters. The calculated water activities are consistent with the experimental values. The calculated solubility isotherms are roughly consistent with experiment values, except they deviate somewhat in the RbCl crystallization region.
KeywordIsopiestic method Water activity Solubility Magnesium chloride Rubidium chloride Pitzer model
DOI10.1007/s10953-018-0837-6
Language英语
WOS KeywordTERNARY-SYSTEM ; ACTIVITY-COEFFICIENTS ; ISOPIESTIC DETERMINATION ; OSMOTIC COEFFICIENTS ; PHASE-EQUILIBRIUM ; MODEL SIMULATION ; THERMODYNAMICS ; CSCI-MGCL2-H2O ; ELECTROLYTES ; RBCL
Funding ProjectNational Key Research and Development Plan of China[2016YFC0700905] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA21070302] ; Natural Science Foundation of China[21868023] ; Natural Science Foundation of Inner Mongolia[2017BS0201]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational Key Research and Development Plan of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of Inner Mongolia
WOS IDWOS:000462984100006
PublisherSPRINGER/PLENUM PUBLISHERS
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28310
Collection中国科学院过程工程研究所
Corresponding AuthorGuo, Lijiang
Affiliation1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Baotou Teachers Coll, Baotou 014030, Peoples R China
Recommended Citation
GB/T 7714
Li, Hongxia,Guo, Lijiang,Li, Jianqiang. Water Activity and Solubility of the System MgCl2-RbCl-H2O at 323.15K[J]. JOURNAL OF SOLUTION CHEMISTRY,2019,48(3):367-378.
APA Li, Hongxia,Guo, Lijiang,&Li, Jianqiang.(2019).Water Activity and Solubility of the System MgCl2-RbCl-H2O at 323.15K.JOURNAL OF SOLUTION CHEMISTRY,48(3),367-378.
MLA Li, Hongxia,et al."Water Activity and Solubility of the System MgCl2-RbCl-H2O at 323.15K".JOURNAL OF SOLUTION CHEMISTRY 48.3(2019):367-378.
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