Measurement of phase equilibria of the systems CO2 + styrene and CO2 + vinyl acetate using different experimental methods

作者：Peper Stephanie; Haverkamp Verena; Dohrn Ralf^*

来源：Journal of Supercritical Fluids, 2010, 55(2): 537-544.

DOI：10.1016/j.supflu.2010.09.014

• Experimental data
• Experimental methods
• Binary system
• Vapor-liquid equilibria
• Carbon dioxide
• Vinyl acetate
• Styrene
• Phase equilibria

The experimental determination of high-pressure phase equilibria is often the only suitable method to obtain reliable data because high-pressure phase behavior is complex and difficult to predict. This contribution gives a brief classification of applied experimental methods. A new high-pressure apparatus is described, which can be used for phase-equilibrium measurements with different experimental methods, namely the analytical-isothermal method, the synthetic-isothermal method as well as the non-visual- and the visual-synthetic method. The different techniques have been tested for the measurement of the phase behavior of systems containing CO2 + styrene and CO2 + vinyl acetate. The measured data were compared with data from literature and discussed in terms of accuracy, advantages and drawbacks of the applied methods.

• 出版日期2010-12