| 초록 |
In this article, phase equilibria for the 1H, 1H-perfluorooctyl acrylate and 1H, 1H-perfluorooctyl methacrylate play an important role as organic solvents in several industrial processes. The solubility curves of binary mixture for 1H, 1H-perfluorooctyl acrylate and 1H, 1H-perfluorooctyl methacrylate in supercritical CO2 are investigated using a static method at five temperatures of (313.2, 333.2, 353.2, 373.2 and 393.2) K and pressure up to 16.84 MPa. Both CO2 + 1H, 1H-perfluorooctyl acrylate and CO2 + 1H, 1H-perfluorooctyl methacrylate systems have critical mixture curves that show maximums in pressure-temperature space between the critical temperatures of CO2 and 1H, 1H-perfluorooctyl acrylate or 1H, 1H-perfluorooctyl methacrylate. The experimental results for the CO2 + 1H, 1H-perfluorooctyl acrylate and CO2 + 1H, 1H-perfluorooctyl methacrylate binary systems are correlated with Peng-Robinson equation of state using a mixing rule including kij and ηij. The critical properties and vapor pressure of 1H, 1H-perfluorooctyl acrylate and 1H, 1H-perfluorooctyl methacrylate were estimated with the group contribution. |
