关键词:

汽液平衡, α-蒎烯, 柠檬烯, 对伞花烃, 溶液模型

Abstract:

Vapor-liquid equilibrium (VLE) data for binary systems of α-pinene(1)+(S)-(-)-limonene(2) and p-cymene(1)+(S)-(-)-limonene(2) were determined under 100.7 kPa by using the modified Ellis equilibrium still.Parameters of four solution models, Liebermann-Fried, Wilson, NRTL and UNIQUAC, were calculated with the least squares method and an objective function based on the pressure.Comparisons of the VLE predictions from the four solution models above were made with the result from the UNIFAC model.The Liebermann-Fried model used to correlate the isothermal VLE data and excess molar enthalpies was found to be more accurate than the others, in predicting isobaric VLE data.

Key words:

汽液平衡, α-蒎烯, 柠檬烯, 对伞花烃, 溶液模型