| 甲醇-苯混合溶剂中NaI活度系数的测定与计算 |
| |
| 引用本文： | 杨美芳,冷春莉,李淑彩,孙仁义.甲醇-苯混合溶剂中NaI活度系数的测定与计算[J].化学研究,2006,17(3):67-70. |
| |
| 作者姓名： | 杨美芳 冷春莉 李淑彩 孙仁义 |
| |
| 作者单位： | 河南大学,化学化工学院,河南,开封475001 |
| |
| 摘 要： | 测定了甲醇-苯-NaI体系在恒压条件下的汽液平衡数据,采用双标准检验法对数据进行检验,检验结果全部合格.应用P itzer强电解质在水溶液中的活度系数模型,采用全部合格的汽液平衡数据拟合出方程中的维利系数,从而获得在双液比固定条件下盐在甲醇-苯混合溶剂中的活度系数.计算结果表明,正常泡点温度下在具有固定双液比的甲醇-苯混合溶剂中,NaI的平均活度系数随盐浓度的增加先减小,经过一个极小值后又增加.
|
| 关 键 词： | 非水体系 汽液平衡 活度系数 Pitzer方程 碘化钠 |
| 文章编号： | 1008-1011（2006）03-0067-04 |
| 收稿时间： | 2006-04-19 |
| 修稿时间： | 2006年4月19日 |
Measurement and Calculation for the Activity Coefficients of NaI in Methanol-benzene System |
| |
| YANG Mei-fang,LENG Chun-li,LI Shu-cai,SUN Ren-yi.Measurement and Calculation for the Activity Coefficients of NaI in Methanol-benzene System[J].Chemical Research,2006,17(3):67-70. |
| |
| Authors: | YANG Mei-fang LENG Chun-li LI Shu-cai SUN Ren-yi |
| |
| Abstract: | By measuring the vapor-liquid equilibrium of methanol(1)-benzene(2)-NaI and testing the data using the ternary Gibbs-Duhem equation,the experimental results of the vapor-liquid equilibrium with thermodynamics consistency were obtained.Applying the Pitzer equation of the activity coefficients of 1-1 type electrolyte to non-aqueous mixed solvents,each parameter of the equation was obtained by the method of least squares.The calculation results show that the activity coefficients of NaI in methanol-benzene system with constant composition decrease at first then pass a minimum and increase gradually again as its concentration increases. |
| |
| Keywords: | non-aqueous mixed solvents vapor-liquid equilibrium activity coefficients Pitzer equation sodium iodide |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
