摘要
利用双循环汽液平衡釜测定101.3kPa下噻吩-正辛烷体系的汽液相平衡数据。运用该实验结果,进一步获得组分的液相活度系数。实验数据经Herington方法检验,表明符合热力学一致性。采用二元体系UNIQUAC模型对该实验数据进行关联,采用最小二乘法拟合得到UNIQUAC模型参数。结果表明,噻吩在汽相组成的平均绝对偏差为0.0635,取得满意的效果。
The isobaric vapor-liquid equilibria data for the binary system of thiophene and octane were determined at 101.3kPa by using a vapor liquid-recycled equilibrium still. The activity coefficients of the liquid phase for the binary system of thiophene and octane were determined further. The Herington method was used to examine the thermodynamic consistency. The measured vapor-liquid equilibria data were correlated by UNIQUAC model. The average absolute deviation of the vapor-phase mole fractions of thiophene is less than 0.0635. The activity coefficient of the liquid phase was correlated by the UNIQUAC equation, and the model parameters of UNIQUAC equation were correlated by the nonlinear least squared criterion method. The results are in perfect agreement with experimental data.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2007年第6期911-913,共3页
Journal of Chemical Engineering of Chinese Universities
基金
天津市自然科学基金资助项目(043613211)
河北省留学人员资助项目(冀人字(2006)2号)
关键词
噻吩
正辛烷
汽液相平衡
活度系数
thiophene
octane
vapor-liquid equilibria
activity coefficient
