Thermodynamic studies by electromotive force method and ion interaction model for Li2B4O7-MgCl2-H2O system at 298.15 K
文献类型：期刊论文
| 作者 | Zhang, AY; Yao, Y |
| 刊名 | ACTA CHIMICA SINICA
 |
| 出版日期 | 2006-03-28 |
| 卷号 | 64期号:6页码:501-507 |
| 关键词 | Li2b4o7-mgcl2-h2o System Electromotive Force Isopiestic Mean Activity Coefficients Ion interactIon Model |
| 文献子类 | Article |
| 英文摘要 | Values of electromotive force of the cell without liquid junction Li-ISE vertical bar Li2B4O7(m(A))(aq.), MgCl2(m(B))(aq.) vertical bar AgCl/Ag were determinaed at 298.15 K. The mean activity coefficients of LiCl in the system with ionic strengths from 0.05 to 3 mol(.)kg(-1) at different ionstrength fraction Y-B of MgCl2 have been calculated, together with the tendencies of these values along with the ion strengths and the concentrations of Mg2+ and B4O72- of the system. While the ion interaction model was studied, the experimental data were not only from this electromotive force study for Li2B4O7-MgCl2-H2O system, but also from the isopiestic studies for systems Li2B4O7-MgCl2-H2O, Li2B4O7-LiCl-H2O and Li2B4O7-H2O. The species of boric acid H3BO3 and borate anions B(OH)(4)(-), B3O3(OH)(4)(-) and B4O5(OH)(4)(2-) have been taken into account in different total boron concentrations. To consider the stoichiometric molality equilibrium constants for the formation of the aqueous species containing boron, Pitzer's osmotic equation and activity equation have been modified slightly to represent the system, and the ion interaction parameters have been obtained using multiple regression analysis. The standard deviation of the calculated and experimentally determined activity coefficients of LiCl in Li2B4O7-MgCl2-H2O system was 0.0167, which reflects that the set up model for the system with boron was adaptable to this four ion system. |
| WOS关键词 | STANDARD ASSOCIATION CONSTANT ; LAKE BRINE SYSTEM ; ISOPIESTIC DETERMINATION ; ACTIVITY-COEFFICIENTS ; OSMOTIC COEFFICIENTS ; PAIR LI+B(OH)(4)(-) ; 25-DEGREES-C ; REPRESENTATION |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000236425300009 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/5763]  |
| 专题 | 青海盐湖研究所_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.Henan Polytech Univ, Jiaozuo 454000, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 3.Heilongjiang Inst Sci & Technol, Harbin 150027, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, AY,Yao, Y. Thermodynamic studies by electromotive force method and ion interaction model for Li2B4O7-MgCl2-H2O system at 298.15 K[J]. ACTA CHIMICA SINICA,2006,64(6):501-507. |
| APA | Zhang, AY,&Yao, Y.(2006).Thermodynamic studies by electromotive force method and ion interaction model for Li2B4O7-MgCl2-H2O system at 298.15 K.ACTA CHIMICA SINICA,64(6),501-507. |
| MLA | Zhang, AY,et al."Thermodynamic studies by electromotive force method and ion interaction model for Li2B4O7-MgCl2-H2O system at 298.15 K".ACTA CHIMICA SINICA 64.6(2006):501-507. |
入库方式： OAI收割
来源：青海盐湖研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。