No abstract

The solubilities of solid benzoic acid, phenanthrene, and 2,3-dimethylhexane in supercritical carbon dioxide were measured with a semiflow phase equilibrium apparatus at the temperatures 318.15 K and 328.15 K and the pressure range from 120 bar to 240 bar. The experimental results show that crossover pressures exist for these three solid solutes. For each isotherm, the mole fraction solubilities of these solutes were correlated satisfactorily with the equation of Adachi and Lu.

No abstract

The isobaric vapor-liquid equilibrium data of the tetraethyl orthosilicate and ethanol binary mixture were collected using a modified Othmer still at pressures of 24.00 kPa and 53.32 kPa. The experimental data showed that this mixture could be separated by a distillation process at lower temperatures under pressures of 24.00 kPa and 53.32 kPa than under atmospheric pressure. The experimental data were examined with the Herington thermodynamic consistency test and the χ 2 distribution of statistics. They are fairly well correlated with the UNIQUAC model. Also, the optimum interaction parameters of the UNIQUAC model were determined by the maximum likelihood principle.