The vapour-liquid equilibrium behaviour of the three systems methane-cthane, methane-ethylene, and ethaneethylene has been investigated over a range of 0 to 2 atmospheres, using a dew-point, bubble-point type of apparatus. The data obtained for the ethane-cthylene system were tested for thermodynamic consistency. A limited amount of liquid phase density data was also obtained for the three systems.
An apparatus was developed to investigate the solid-liquid phase diagrams for the systems methane-ethane, nethane-ethylene , ethane-ethylene , ethane-propane, nethane- propane, methane-nitrogen, and propylene-ethylene, using the method of thermal analysis.
A review of the methods of correlating and predicting vapour-liquid equilibria was made and an equation was developed to cover the thermodynamic relationships in solid-liquid equilibria.
All the systems investigated formed solid solutions and the deviation from ideal solid-solution behaviour was considerable.