摘要
用经E llis汽液平衡釜验证的自制汽液平衡釜测定了异丙醇+乙苯及异丙醇+邻二甲苯、间二甲苯、对二甲苯4个二元液系在压力为99.80 kPa时的等压汽液平衡数据,并进行了热力学一致性检验。用UNIQUAC模型处理了实验数据,得出了二元体系的混合自由能。这不仅为二元液系混合体系充实了实验数据,还为二元液系的热力学研究丰富了理论依据。
Vapor-liquid equilibrium data were determined in a self-made still tested by Ellis still at 99.80 kPa for isopropyl alcohol ＋ ethyl benzene, isopropyl alcohol ＋ o-xylene, isopropyl alcohol ＋ m-xylene, isopropyl alcohol ＋ p-xylene, respectively. All experimental data were tested by the method proposed by Herington and the results show that the experimental data conform to the demand of thermodynamic consistency. A thermodynamic model proposed by UNIQUIAC for accounting the non-ideal behavior of the vapor phase and liquid phase was used to calculate the activity coefficient and the mixture free energy of liquid phase. It is not only to replenish data stock but also to enrich the theoretical basis on thermodynamic study for the binary liquid mixture systems.
出处
《化学工程》
CAS
CSCD
北大核心
2006年第5期49-53,共5页
Chemical Engineering(China)
关键词
汽液平衡
活度系数
混合自由能
二甲苯
乙苯
vapor-liquid equilibrium
activity coefficient
mixture free energy
xylene
ethyl benzene
