Phase behavior of castor oil in compressed propane and n-butane

被引：33
|
作者：
Lanza, M
Ndiaye, PM
Tavares, FW
Oliveira, D
Dariva, C
Oliveira, JV
机构：
[1] URI, Dept Food Engn, BR-99700000 Erechim, RS, Brazil
[2] Univ Fed Rio de Janeiro, Escola Quim, BR-21949900 Rio De Janeiro, Brazil
来源：
JOURNAL OF SUPERCRITICAL FLUIDS | 2005年 / 34卷 / 02期
关键词：
phase equilibrium behavior; triglycerides; castor oil; U-LCST; high-pressure phase equilibria;
D O I：
10.1016/j.supflu.2004.11.017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This work is focused on the investigation of the phase behavior of binary systems formed by castor oil in compressed propane and n-butane. The experiments were conducted in a high-pressure variable-volume view cell in the temperature range of 30-150 degrees C, for solvent overall composition ranging from 15 to 99 wt.% and pressures up to 240 bar. Results indicate the existence of a complex phase behavior for both systems investigated, with liquid-liquid, vapor-liquid and vapor-liquid-liquid phase transitions. The liquid-liquid phase transition presents upper and lower critical solution temperatures. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：215 / 221
页数：7
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