Zn(Ⅱ)-NaOH-H_2O体系中锌溶解平衡模型的构建  

Thermodynamics Model of Znic Equilibrium in System of Zn(Ⅱ)-NaOH-H_2O

作　　者：刘清[1,2] 赵由才[2] 招国栋[3] 袁华山[1] 

机构地区：[1]南华大学城市建设学院,湖南衡阳421001 [2]同济大学污染控制与资源化研究国家重点实验室,上海200092 [3]南华大学核资源与核燃料工程学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2010年第1期83-86,共4页Journal of University of South China：Science and Technology

基　　金：湖南省教育厅基金资助项目(09C865;07C648);南华大学博士科研启动基金资助项目(2007XQD37)

摘　　要：本文利用电算指数法及平衡法对Zn（Ⅱ）-NaOH-H2O体系热力学进行了深入研究,揭示了在氢氧化钠浓度在0-300 g/L范围内,锌的分布形式及溶解规律,构建了锌在氢氧化钠溶液中的溶解平衡模型,并对热力学计算结果进行实验验证和差异分析.结果表明：锌溶解平衡浓度计算值与实验值的相对偏差的绝对平均值为0.1298%,这说明热力学模型是正确的,所选数据的准确性较好.According to the principles of simultaneous equilibrium and electronic charge neutrality,the thermodynamics of Zn（Ⅱ）-NaOH-H2O system was studied in this paper.Varying the concentration of sodium hydroxide,respectively,in range of 0~300 g/L,the distribution law of all zinc species and the mathematical model of equilibrium concentration of zinc in the system were obtained.The relative errors between theoretic calculation and the experimental values of total concentration of zinc were analyzed.The results show the absolute average error between the experimental values and the theoretically calculated values is 0.1298 %.The mathematical model and the thermodynamic data are believable.

关 键 词：热力学 Zn(Ⅱ)-NaOH-H2O体系 锌溶解平衡 

分 类 号：O642.4[理学—物理化学] TF813[理学—化学]