Vapor–liquid equilibria of ethylene (C2H4) + decafluorobutane (C4F10) at 268–298 K from experiment, molecular simulation and the Peng–Robinson equation of state
作者： Andreas Köster , Prabir Nandi , Thorsten Windmann , Deresh Ramjugernath , Jadran Vrabec
DOI: 10.1016/J.FLUID.2012.08.023
关键词: Activity coefficient 、 Equation of state 、 Chemistry 、 Vapor–liquid equilibrium 、 Non-random two-liquid model 、 Binary system 、 van der Waals force 、 Thermodynamics 、 Isothermal process 、 Mole fraction
摘要: Abstract Isothermal vapor–liquid equilibrium (VLE) data are presented for the system ethylene + decafluorobutane. Measurements performed four isotherms around critical temperature of ethylene, i.e. in range from 268.13 to 298.13 K. The measurements undertaken using a “static-analytic” type apparatus, sampling phases via moving capillary sampler (ROLSITM). uncertainties present temperature, pressure and mole fraction within 0.036 K, 0.0058 MPa 0.02 mol/mol, respectively. VLE correlated with Peng–Robinson equation state (PR EOS), incorporating Mathias–Copeman alpha function. Both, Wong–Sandler mixing rule non-random two-liquid (NRTL) activity coefficient model quadratic Van der Waals one-fluid used. In addition, new rigid force field decafluorobutane is developed molecular simulations carried out. simulation results compared experimental binary system. Furthermore, pure component properties predicted literature PR EOS.
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