Liquid-Liquid Equilibrium of Ternary Systems of Cyclohexane+(Benzene,+Toluene,+Ethylbenzene, or+o-Xylene)+4-Methyl-N-butyl Pyridinium Tetrafluoroborate Ionic Liquid at 303.15 K

摘要

Liquid-liquid equilibrium data are critical for designing the extraction equipment or calculating the thermodynamic limit of a given separation. In this work, the LLE data were measured for the cyclohexane+(benzene,+toluene,+ethylbenzene, or+o-xylene)+4-methyl-N-butyl pyridinium tetrafluoroborate ([bmpy]BF4) systems at 303.15 K under atmospheric pressure. The consistency of the measured LLE data was tested using the Othmer-Tobias correlation and the root-mean-square deviation (rmsd) in the mass fraction of [bmpy]BF4 in the lower phase and the average value of the absolute difference (AAD) between experimental mass fraction of cyclohexane in the upper phase and that calculated using the Othmer-Tobias correlation.