Data for the Methanol-Isobutane System

Leu and Robinson (1992) reported data for this binary system. The data were obtained at temperatures of 0.0, 50.0, 100.0, 125.0, 133.0 and 150.0 °C. At each temperature the vapor and liquid phase mole fractions of isobutane were measured at different pressures. The data at 133.0 and 150.0 are given in Tables 14.9 and 14.10 respectively. The reader should test if the Peng-Robinson and the Trebble-Bishnoi equations of state are capable of describing the observed phase behaviour. First, each isothermal data set should be examined separately. 

Pressure (MPa) Liquid Phase Mole Fraction (x2) Vapor Phase Mole Fraction (y ) 

3 This is a critical point composition. Source Leu and Robinson (1992). 

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