Osmotic Coefficients of the Li2B4O7+LiCl + H2O System at T=273.15 K

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	Osmotic Coefficients of the Li2B4O7+LiCl + H2O System at T=273.15 K
	Yang, Ji-min 1; Yao, Yan 2; Zhang, Run-zhi ; Sun, Ai-de 1; Li, Bao-hui 1; Lu, Hong-zhi 1; Xia, Qi-ying 1
	2009-04-01
发表期刊	JOURNAL OF SOLUTION CHEMISTRY
ISSN	0095-9782
卷号	38 期号:4 页码:429-439
关键词	Isopiestic Method Li2b4o7 + Licl H2o Water Activity Pitzer Ion-interaction Model Osmotic Coefficient
摘要	Osmotic coefficients and water activities for the Li2B4O7+LiCl+H2O system have been measured at T=273.15 K by the isopiestic method, using an improved apparatus. Two types of osmotic coefficients, phi (S) and phi (E), were determined. phi (S) is based on the stoichiometric molalities of the solute Li2B4O7(aq), and phi (E) is based on equilibrium molalities from consideration of the equilibrium speciation into H3BO3,B(OH) (4) (-) and B3O3(OH) (4) (-) . The stoichiometric equilibrium constants K (m) for the aqueous speciation reactions were estimated. Two types of representations of the osmotic coefficients for the Li2B4O7+LiCl+H2O system are presented with ion-interaction models based on Pitzer's equations with minor modifications: model (I) represents the phi (S) data with six parameters based on considering the ion-interactions between three ionic species of Li+, Cl-, and B4O (7) (2-) and model (II) for represents the phi (E) data based on considering the equilibrium speciation. The parameters of models (I) and (II) are presented. The standard deviations for the two models are 0.0152 and 0.0298, respectively. Model (I) was more satisfactory than model (II) for representing the isopiestic data.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/2111
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
作者单位	1.Linyi Normal Univ, Coll Chem & Chem Engn, Linyi 276005, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Yang, Ji-min,Yao, Yan,Zhang, Run-zhi,et al. Osmotic Coefficients of the Li2B4O7+LiCl + H2O System at T=273.15 K[J]. JOURNAL OF SOLUTION CHEMISTRY,2009,38(4):429-439.
APA	Yang, Ji-min.,Yao, Yan.,Zhang, Run-zhi.,Sun, Ai-de.,Li, Bao-hui.,...&Xia, Qi-ying.(2009).Osmotic Coefficients of the Li2B4O7+LiCl + H2O System at T=273.15 K.JOURNAL OF SOLUTION CHEMISTRY,38(4),429-439.
MLA	Yang, Ji-min,et al."Osmotic Coefficients of the Li2B4O7+LiCl + H2O System at T=273.15 K".JOURNAL OF SOLUTION CHEMISTRY 38.4(2009):429-439.