Determination of the vapor-liquid equilibrium of ionic liquid 1-Butyl-3-Methylimidazolium Hexafluorophosphate using molecular simulations
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Molecular Dynamics (MD) simulations have been carried out to study the liquid-vapor phase equilibrium for the ionic liquid 1-Butyl-3-Methylimidazolium Hexafluorophosphate [C4mim][PF6] or [bmim][PF 6]. The coexisting vapor-liquid densities and the critical temperature were calculated in the range of 900 K-1250 K. From the MD snapshots we visualized the liquid-vapor interface and predicted the appearance of the critical temperature above the simulated temperatures. The calculated liquid density at 298.15 K agrees with the experimental data, and the critical temperature calculated from the MD simulations is compared with the data from the literature. © 2013 Elsevier B.V.
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Critical temperature; Ionic liquids; Molecular simulations; Vapor-liquid coexistence curve 1-Butyl-3-methyl-imidazolium hexafluorophosphate; Critical temperatures; Experimental datum; Liquid-vapor interface; Molecular dynamics simulations; Molecular simulations; Vapor-liquid coexistence curve; Vapor-liquid equilibrium; Density of liquids; Molecular dynamics; Molecular structure; Phase equilibria; Temperature; Vapors; Ionic liquids
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