CIESC Journal

• CHEMICAL ENGINEERING DATA • 上一篇    下一篇

水,乙醇和丁二酸二甲酯三元体系的液体平衡

Erol nce; smail   

  1. Istanbul University, Engineering Faculty, Chemical Engineering Department, 34850 Avcilar,
    Istanbul, Turkey
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-10-28 发布日期:2002-10-28
  • 通讯作者: Erol nce

Liquid-Liquid Equilibria of the Water-Ethanol-Dimethyl Succinate Ternary System

Erol nce; smail   

  1. Istanbul University, Engineering Faculty, Chemical Engineering Department, 34850 Avcilar,
    Istanbul, Turkey
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-10-28 Published:2002-10-28
  • Contact: Erol nce

摘要: Liquid-liquid equilibrium (LLE) data for the ternary system water-ethanol-dimethyl
succinate havebeen determined experimentally at temperatures ranging from 298.15 to 318.15
K at 5 K intervals. Complete phasediagrams were obtained by determining solubility and the
tie-line data. Tie-line compositions were correlated byOthmer-Tobias method. The universal
quasichemical functional group activity coefficient (UNIFAC) and modifiedUNIFAC methods
were used to predict the phase equilibrium in the system using the interaction parameters
determined from experimental data between groups CH3, CH2, OH, CH3COO and H2O. It is found
that UNIFAC andmodified UNIFAC group interaction parameters used for LLE could not provide
a good prediction. Distributioncoefficients and separation factors were evaluated for the
immiscibility region.

关键词: ethanol;dimethyl succinate;liquid-liquid equilibria

Abstract: Liquid-liquid equilibrium (LLE) data for the ternary system water-ethanol-dimethyl
succinate havebeen determined experimentally at temperatures ranging from 298.15 to 318.15
K at 5 K intervals. Complete phasediagrams were obtained by determining solubility and the
tie-line data. Tie-line compositions were correlated byOthmer-Tobias method. The universal
quasichemical functional group activity coefficient (UNIFAC) and modifiedUNIFAC methods
were used to predict the phase equilibrium in the system using the interaction parameters
determined from experimental data between groups CH3, CH2, OH, CH3COO and H2O. It is found
that UNIFAC andmodified UNIFAC group interaction parameters used for LLE could not provide
a good prediction. Distributioncoefficients and separation factors were evaluated for the
immiscibility region.

Key words: ethanol, dimethyl succinate, liquid-liquid equilibria