| 초록 |
High perssure phase equilibria for the carbon dioxide(CO2) +1H,1H,2H,2H-perfluoro-1-octanol and CO2 + 1H,1H,2H-perfluoro-1-octene systems are measured in static apparatus at five temperatures 313.2, 333.2, 353.2, 373.2 and 393.2 K and pressures up to 17.22 MPa. Temperature-pressure diagram of the CO2 + 1H,1H,2H,2H-perfluoro-1-octanol and CO2 + 1H,1H,2H-perfluoro-1-octene systems mixture was between the critical temperature of CO2 and 1H,1H,2H,2H-perfluoro-1-octanol or CO2 and 1H,1H,2H-perfluoro-1-octene. The solubility of 1H,1H,2H,2H-perfluoro-1-octanol and 1H,1H,2H-perfluoro-1-octene in the two systems will gradually increase the temperature up at a fixed pressure. The CO2 + 1H,1H,2H,2H-perfluoro-1-octanol and CO2 + 1H,1H,2H-perfluoro-1-octene two experimental data shows a graph of the phase behavior of the curve type-I. Correlation of experimental results for the CO2 + 1H,1H,2H,2H-perfluoro-1-octanol and CO2 + 1H,1H,2H-perfluoro-1-octene systems are given by the Peng-Robinson equation of state using a mixed state equation having two variables (kij, ηij). |
