Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (06): 1300-1304.doi: 10.3866/PKU.WHXB20110616

• THERMODYNAMICS, KINETICS, AND STRUCTURAL CHEMISTRY • Previous Articles     Next Articles

Solubilization of Polyalcohol in Supercritical CO2 Microemulsion

ZHOU Dan, YU Wen, XU Qin-Qin, YIN Jian-Zhong   

  1. State Key Laboratory of Fine Chemicals, School of Chemical Machinery, Dalian University of Technology, Dalian 116024, Liaoning Province, P. R. China
  • Received:2010-11-01 Revised:2011-02-22 Published:2011-05-31
  • Contact: YIN Jian-Zhong E-mail:jzyin@dlut.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20976028).

Abstract:

We mainly investigated the phase behavior of the AOT (sodium bis-(2-ethylhexyl) sulfosuccinate/CO2/ethanol/water quaternary system and the AOT/CO2/ethanol/1,3-propanediol (1,3-PDO)/water quinary system at 30-50 °C and at pressures of 6.9-10.3 MPa. AOT was used as the surfactant and ethanol was used as the cosolvent at 1,3-PDO concentrations of 2.5%, 5.0%, and 7.5%(w). This result shows that a thermodynamically stable microemulsion can be formed by controlling the operating pressures and temperatures. Subsequently, the selective extraction of 1,3-PDO from the aqueous solution can be controlled using appropriate temperatures and pressures, which is useful for the practical application of this technique in industry.

Key words: Supercritical CO2 microemulsion, Sodium bis-(2-ethylhexyl) sulfosuccinate, 1,3-Propanediol, Phase behavior, Solubilization

MSC2000: 

  • O642