(588e) Fluid Phase Equilbria at High Pressures

Sadus, R. J., Swinburne University of Technology
The high-pressure phase equilibria of fluids [1] has important consequences, ranging from practical applications to frontier sciences. A well-known example of the former is the removal of caffeine from coffee via supercritical extraction whereas modelling the chemical behavior of Saturn and Jupiter is a more exotic application. The diversity of phenomena expands as the number of components in increases. So-called â??islands of immiscibilityâ? are observed when three of more component are involved resulting from the complex interplay of mixing and de-mixing processes. The phenomena are ultimately governed by fundamental differences in the interactions between molecules and experimental phase behavior data have provided the impetus for both the development of theory [2] and molecular simulation [3] techniques. This work highlights progress in understanding phase equilibria at high prressures, emphasising new developments [4] that may challenge our understanding of phenomena at high pressures.

[1] R. J. Sadus, High Pressure Phase Behaviour of Multicomponent Fluid Mixtures, Elsevier, Amsterdam, 1992.

[2] Y. S. Wei and R.J. Sadus, AIChE J. 46, 169 (2000).

[3] R. J. Sadus, Molecular Simulation of Fluids: Theory, Algorithms and Object-Orientation, Elsevier, Amsterdam, 1999.

[4] T. M. Yigzawe and R. J. Sadus, J. Chem. Phys. 138, 194502 (2013).