Abstract Thermodynamically consistent phase equilibrium data at 101.3 kPa and boiling conditions were determined for the ternary systems water + Na2SO4 + 1-propanol, water + Na2SO4 + 2-propanol, water + K2SO4 + 1-propanol and water + K2SO4 + 2-propanol. In contrast to the systems with Na2SO4, the salting-out effect of K2SO4 was not sufficient to split the miscible propanol + water mixture into two liquid phases. The UNIQUAC equation extended to electrolytes for the liquid phase activity coefficients was used to predict the phase equilibria of all the systems. The model reproduced the experimental results quite well, except for the ternary system water + K2SO4 + 1-propanol. In this case the model predicted liquid-liquid splitting into two liquid phases, when there is not.

中文翻译：

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水 + K2SO4 或 Na2SO4 + 1-丙醇或 2-丙醇系统在沸腾条件和 101.3 kPa 下的平衡图

摘要 在 101.3 kPa 和沸腾条件下确定了三元系统水 + Na2SO4 + 1-丙醇、水 + Na2SO4 + 2-丙醇、水 + K2SO4 + 1-丙醇和水 + K2SO4 + 2-丙醇的热力学一致相平衡数据。与使用 Na2SO4 的系统相比，K2SO4 的盐析效应不足以将可混溶的丙醇 + 水混合物分成两个液相。UNIQUAC 方程扩展到电解质的液相活度系数，用于预测所有系统的相平衡。除了三元体系水+K2SO4+1-丙醇外，该模型很好地再现了实验结果。在这种情况下，模型预测液-液分裂成两个液相，而实际上没有。