含盐体系中相对挥发度和盐浓度的关联

The Correlation between Relative Volatility and Salt Concentration in Salt-containing System

用气液色谱法测定了乙醇、水在含盐(乙酸钾)溶剂(乙二醇)中的无限稀释活度系数、相对挥发度及含盐溶剂的选择度。提出了相对挥发度与盐浓度的关联方法和关联式:ln(α(?))(?)-ln(α_(?))(?)=kz,计算结果与实验值吻合。

The activity coefficients and relative volatilities of ethanol and water in salt(KAc)-containing solvent(ethylene glycol)at infinite dilution,and selectivity ofsalt-containing solvent have been determined by gas-liquid chromatography.Inthis paper the relative volatility is correlated with salt concentration,and therelation is proposed as follows:■n(α_(ij))_■~∞-■n(α_(ij))_■~∞=kzFair agreement between experimental and calculated values were found.