LIQUID-LIQUID EQUILIBRIA FOR THE OLEIC ACID-BETA-SITOSTEROL WATER-SYSTEM AT ELEVATED-TEMPERATURES AND PRESSURES

被引：39

作者：

BRIONES, JA ^{[1
]}

MULLINS, JC ^{[1
]}

THIES, MC ^{[1
]}

机构：

[1] CLEMSON UNIV,DEPT CHEM ENGN,CLEMSON,SC 29634

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1994年 / 33卷 / 01期

关键词：

D O I：

10.1021/ie00025a020

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Compressed liquid water at elevated temperatures is being evaluated as an extractive solvent for separating mixtures of oleochemicals. In this paper, results are presented for a model of the tall oil-water system, namely, the ternary system oleic acid-beta-sitosterol-water. A continuous-flow apparatus was used to measure liquid-liquid equilibrium compositions for this system at 572, 579, and 586 K. Selectivities of water for oleic acid relative to beta-sitosterol were found to be 10-15, and distribution coefficients of oleic acid ranged from 0.0063 to 0.048 for the temperatures investigated. The experimental data were correlated with the NRTL equation. Limited data are also presented for the oleic acid-dehydroabietic acid-water system.

引用

页码：151 / 156

页数：6

共 15 条

[1] STATISTICAL THERMODYNAMICS OF LIQUID-MIXTURES - NEW EXPRESSION FOR EXCESS GIBBS ENERGY OF PARTLY OR COMPLETELY MISCIBLE SYSTEMS [J].