Isopiestic studies on thermodynamic properties and representation withion-interaction model for the Li2B4O7-LiCl-H2O system at 273.15 K

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	Isopiestic studies on thermodynamic properties and representation withion-interaction model for the Li2B4O7-LiCl-H2O system at 273.15 K
	Yang Ji-Min; Yao Yan
	2007
发表期刊	ACTA CHIMICA SINICA
ISSN	0567-7351
卷号	65 期号:11 页码:1089-1093
摘要	The isopiestic molalities and the water activities have been determined at 273.15 K for the Li2B4O7 -LiCl-H2O system by isopiestic method, and the vapor pressures and the osmotic coefficient have been calculated from the measurements. The experimental data have been represented by the different forms of the ion interaction model based on the primary Pitzer model of osmotic coefficient. The Pitzer ion interaction parameters were evaluated from recent measurements by using multiple regression and iterative methods. The activity coefficients of LiCl and Li2B4O7 for the system Li2B4O7LiCl-H2O were calculated by the ion interaction model parameterized at low concentrations. The experimental data of osmotic coefficients measured and calculated by using the Pitzer model are in reasonable agreements. These studies are useful for improving the thermodynamic model for salt lake brine complex systems containing lithium and borate. The isopiestic molalities and the water activities have been determined at 273.15 K for the Li2B4O7 -LiCl-H2O system by isopiestic method, and the vapor pressures and the osmotic coefficient have been calculated from the measurements. The experimental data have been represented by the different forms of the ion interaction model based on the primary Pitzer model of osmotic coefficient. The Pitzer ion interaction parameters were evaluated from recent measurements by using multiple regression and iterative methods. The activity coefficients of LiCl and Li2B4O7 for the system Li2B4O7LiCl-H2O were calculated by the ion interaction model parameterized at low concentrations. The experimental data of osmotic coefficients measured and calculated by using the Pitzer model are in reasonable agreements. These studies are useful for improving the thermodynamic model for salt lake brine complex systems containing lithium and borate.
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/2285
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
推荐引用方式 GB/T 7714	Yang Ji-Min,Yao Yan. Isopiestic studies on thermodynamic properties and representation withion-interaction model for the Li2B4O7-LiCl-H2O system at 273.15 K[J]. ACTA CHIMICA SINICA,2007,65(11):1089-1093.
APA	Yang Ji-Min,&Yao Yan.(2007).Isopiestic studies on thermodynamic properties and representation withion-interaction model for the Li2B4O7-LiCl-H2O system at 273.15 K.ACTA CHIMICA SINICA,65(11),1089-1093.
MLA	Yang Ji-Min,et al."Isopiestic studies on thermodynamic properties and representation withion-interaction model for the Li2B4O7-LiCl-H2O system at 273.15 K".ACTA CHIMICA SINICA 65.11(2007):1089-1093.