ABSTRACT

Isobaric vapor liquid equilibrium data for {methanol (1) + dimethyl carbonate (2) + 1-octyl-3-methylimidazolium (3)} where 3 is an ionic liquid ([OMIM]+[BF4]-) were obtained at 101.32 kPa using a modified Othmer still. The results indicated that [OMIM]+[BF4]- can transfer the azeotropic point and totally eliminate the azeotropic phenomena when its mole fraction is up to x3 = 0.20. This shows that [OMIM]+[BF4]- could be used as a alternative entrainer in the extractive distillation for methanol (1) + dimethyl carbonate (2) system. The measured ternary vapor liquid equilibrium data were fitted with the NRTL.

Compounds

#	Formula	Name
1	CH4O	methanol
2	C3H6O3	dimethyl carbonate
3	C12H23BF4N2	1-methyl-3-octylimidazolium tetrafluoroborate

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	1
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	1
POMD	1 2	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	17
POMD	1 2	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Gas Liquid	Chromatography	17
POMD	1 2 3	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid Solvent: Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	30
POMD	1 2 3	Mole fraction - 1 ; Gas	Mole fraction - 3; Liquid Solvent: Mole fraction - 1; Gas	Pressure, kPa; Liquid	Gas Liquid	Chromatography	30

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Isobaric Vapor Liquid Equilibrium for Methanol + Dimethyl Carbonate + 1-Octyl-3-methylimidazolium Tetrafluoroborate

Li, Q.[Qunsheng], Zhu, W.[Wei], Fu, Y.[Yongquan], Wang, H.[Haichuan], Li, L.[Lun], Wang, B.[Baohua]

ABSTRACT