Zn(Ⅱ)-NH3-Cl--CO32--H2O体系中Zn(Ⅱ)配合平衡

来源期刊:中国有色金属学报2008年增刊第1期

论文作者:王瑞祥 唐谟堂 杨建广 杨声海 张文海 唐朝波 何静

文章页码:192 - 198

关键词:热力学;Zn(Ⅱ)配合平衡;双平衡法

Key words:Thermodynamics; Zn (Ⅱ) complex equilibrium; double equilibrium method

摘    要:用双平衡法研究Zn(Ⅱ)-NH3-Cl--CO32--H2O体系中Zn(Ⅱ)配合平衡热力学,求出氨水浓度和氯离子浓度在0~10 mol/L范围内变化时,体系中各物种的平衡浓度,绘制热力学平衡图,并对热力学计算结果进行实验验证和差异分析。结果表明:锌离子浓度理论计算值与实验值之间的平均相对误差为7.47%,这说明该热力学模型是正确的,所选数据的准确性较好。

Abstract: Thermodynamics of Zn(Ⅱ) complex equilibrium in the system of Zn(Ⅱ)-NH3-Cl--CO32--H2O was studied by the double equilibrium method. Varying the concentration of ammonia and chloride ion, respectively, in range of 0~10 mol/L, the equilibrium concentrations of all the species in the system were calculated, and thermodynamic diagrams were plotted. The relative errors between theoretic calculation and the experimental values of total concentration of zinc were analyzed. The results show that the relative average error between the theoretic calculation and the experimental values is 7.47%. The critical data and the thermodynamic model are believable.

基金信息:国家重点基础研究发展计划资助项目
国家自然科学基金资助项目
江西省教育厅科技计划资助项目

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