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本研究沿用了Mentzer等(1982)的静态平衡鉴装置,对氧化丙烯——醋酸乙脂、氧化丙烯——叔丁醇、氧化丙烯——1,2二氯丙烷、二氯甲烷——乙醇、叔丁基甲醚——正己烷和叔丁基甲醚——苯等六对二元体系的相平衡,都分别进行了三种不同温度条件下的研究。实验测定了它们全浓度范围内体系饱和压力随着液相组成的变化关系(等温下)。平衡汽相组成是基于Gibbs——Duhem方程积分得到。川Wilson方程关联了以上得到的相平衡数据,求得各个二元体系的活度系数和Wilson方程常数。计算中使用的第二维里系数是用Hayden和O’connell(1975)所提出的方程。在lnγ_i—x_i图和x_i～y_i图上表示可以拟合效果。
In this study, Mentzer et al. (1982) used the static balance test equipment, propylene oxide - ethyl acetate, propylene oxide - tert-butanol, propylene oxide - 1,2 dichloropropane, dichloromethane - ethanol, Tert-butyl methyl ether - n-hexane and tert-butyl methyl ether - benzene six pairs of binary systems, respectively, were carried out under three different temperature conditions. The relationship between the saturation pressure and the composition of the liquid in the whole range of concentration (isothermal) was experimentally determined. The equilibrium vapor phase composition is based on the integral of Gibbs - Duhem equation. The Wilson equation correlates the phase equilibrium data obtained above to determine the activity coefficients and the Wilson equation constants for each binary system. The second Virial coefficient used in the calculation is the one proposed by Hayden and O’Connell (1975). In lnγ_i-x_i map and x_i ~ y_i map that can fit the effect.