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

Liquid-Liquid Equilibria for {1-Ethyl-3-methylimidazolium Diethylphosphate or 1-Ethyl-3-methylimidazolium Ethylsulfate} + 4,6-Dimethyldibenzothiophene + Dodecane Systems at 298.2 K and 313.2 K

Oliveira, L. H. d.[Leonardo Hadlich de], Aznar, M.[Martin]
J. Chem. Eng. Data 2011, 56, 5, 2005-2012
ABSTRACT
Liquid-liquid equilibrium (LLE) data for {1-ethyl-3-methylimidazolium diethylphosphate ([emim][DEtPO4]) or 1-ethyl-3-methylimidazolium ethylsulfate ([emim][EtSO4])} + 4,6-dimethyl-dibenzothiophene (4,6-DMDBT) + dodecane systems, at (298.2 and 313.2) K and atmospheric pressure ( 95 kPa), were determined by refractometry. 4,6-DMDBT is one of the most difficult diesel sulfur pollutants to remove by the conventional process of hydrodesulfurization (HDS). Extraction of 4,6-DMDBT from dodecane (used as model diesel oil) was analyzed in terms of solute distribution coefficient, solvent selectivity, and percent of extraction. The results indicate that [emim][DEtPO4] is a better solvent for extractive desulfurization of dodecane than [emim][EtSO4]. The Hand and Othmer-Tobias correlations, used to ascertain the quality of the experimental data, presented R2 greater than 0.98 for systems with [emim][DEtPO4] and R2 greater than 0.96 for systems with [emim][EtSO4]. The nonrandom two-liquid (NRTL) model was used to correlate the LLE data and showed root-mean-square deviations between experimental and calculated mole fractions = 0.0002.
Compounds
# Formula Name
1 C10H21N2O4P 1-ethyl-3-methylimidazolium diethyl phosphate
2 C8H16N2O4S 1-ethyl-3-methylimidazolium ethyl sulfate
3 C14H12S 4,6-dimethyldibenzo[b,d]thiophene
4 C12H26 dodecane
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
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 2
  • POMD
  • 2
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 2
  • POMD
  • 4
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 2
  • POMD
  • 4
  • 3
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • Standard Abbe refractometry
  • 2
  • POMD
  • 4
  • 3
  • Mass fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • Titration method
  • 2
  • POMD
  • 4
  • 3
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Mass fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 8
  • POMD
  • 4
  • 3
  • 1
  • Refractive index (Na D-line) ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Standard Abbe refractometry
  • 8
  • POMD
  • 4
  • 3
  • 1
  • Refractive index (Na D-line) ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Standard Abbe refractometry
  • 6
  • POMD
  • 4
  • 3
  • 1
  • Refractive index (Na D-line) ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Standard Abbe refractometry
  • 6
  • POMD
  • 4
  • 3
  • 1
  • Mass fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 8
  • POMD
  • 4
  • 3
  • 1
  • Mole fraction - 3 ; Liquid mixture 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Titration method
  • Titration method
  • Titration method
  • 6
  • POMD
  • 4
  • 3
  • 2
  • Refractive index (Na D-line) ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Standard Abbe refractometry
  • 9
  • POMD
  • 4
  • 3
  • 2
  • Refractive index (Na D-line) ; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Standard Abbe refractometry
  • 3
  • POMD
  • 4
  • 3
  • 2
  • Refractive index (Na D-line) ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Standard Abbe refractometry
  • 6
  • POMD
  • 4
  • 3
  • 2
  • Mass fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 9
  • POMD
  • 4
  • 3
  • 2
  • Mole fraction - 3 ; Liquid mixture 2
  • Mole fraction - 2 ; Liquid mixture 1
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Titration method
  • Titration method
  • Titration method
  • 6