ABSTRACT

Over the last decade ionic liquids appeared as potential entrainers for extractive distillation processes.However experimental vapor liquid equilibrium data for ionic liquid containing systems is still scarce since most conventional equilibrium cells are not adequate for these systems. To overcome that limitation a new isobaric microebulliometer, operating at pressures ranging from 0.05 to 0.1 MPa and requiring a sample volume lower than 8 mL was developed and validated in this work.The new apparatus was used to determine isobaric VLE data at pressures of 0.05, 0.07 and0.1 MPa for eight binary mixtures of 1-ethyl-3-methylimidazolium chloride ([C2mim][Cl]), 1-butyl-3-methylimidazolium chloride ([C4mim][Cl]), 1-hexyl-3-methylimidazolium chloride ([C6mim][Cl]), and choline chloride ([N111(2OH)][Cl]) with water and ethanol. The experimental data here measured were correlated with the NRTL model.

Compounds

#	Formula	Name
1	C6H11ClN2	1-ethyl-3-methylimidazolium chloride
2	C8H15ClN2	1-butyl-3-methylimidazolium chloride
3	C10H19ClN2	1-hexyl-3-methylimidazolium chloride
4	C5H14ClNO	choline chloride
5	H2O	water
6	C2H6O	ethanol

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	Phase	Method	#Points
POMD	5 1	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mole fraction - 5; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	93
POMD	5 2	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mole fraction - 5; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	81
POMD	5 3	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mole fraction - 5; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	102
POMD	4 5	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mole fraction - 5; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	51
POMD	6 1	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mole fraction - 6; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	84
POMD	6 2	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mole fraction - 6; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	90
POMD	6 3	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mole fraction - 6; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	75
POMD	6 4	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mole fraction - 6; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	57

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

A new microebulliometer for the measurement of the vapor liquidequilibrium of ionic liquid systems

Carvalho, P. J.[Pedro J.], Khan, I.[Imran], Morais, A.[Antonio], Granjo, J. F. O.[Jose F.O.], Oliveira, N. M. C.[Nuno M.C.], Santos, L. M. N. B. F.[Luis M.N.B.F.], Coutinho, J. A. P.[Joao A.P.]

ABSTRACT