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甲醇-苯二元混合物被高氯酸钠饱和后形成部分混溶体系。本文修改了前人建议的液体模型,在此基础上提出用多参数Wilson公式关联和推断含盐部分混溶体系的恒压汽液平衡以及用多参数Wilson公式和三参数Margules公式关联和推断这一体系的恒温汽液平衡。并用本工作所测定的该体系在760.0mmHg、636.3mmHg和55.0℃下的平衡数据对所提方法作了检验,结果令人满意。文后附录部分根据理论推导提出一组求三参数Margules公式中参数值的公式。在用非线性最小二乘法处理实验数据中,把这样求得的参数值作为初值使用,比用其它方法确定的初值有较大的优越性。
The methanol-benzene binary mixture is saturated with sodium perchlorate to form a partially miscible system. In this paper, we modify the liquid model proposed by our predecessors. Based on this, we propose to correlate and deduce the constant pressure vapor-liquid equilibrium of the salt-containing partially miscible system by the multi-parameter Wilson formula and to associate and infer this with the multi-parameter Wilson formula and the three-parameter Margules formula A system of constant vapor-liquid equilibrium. The proposed method was tested with the equilibrium data of 760.0mmHg, 636.3mmHg and 55.0 ℃ determined by this work, and the results were satisfactory. In the appendix, the paper proposes a set of formulas for calculating the parameter values in the three-parameter Margules formula according to the theoretical derivation. In the experimental data using nonlinear least square method, the parameter values obtained in this way as the initial value, compared with other methods to determine the initial value has greater advantages.