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

Enthalpy of Solution of the Amino Acid Ionic Liquid 1-Butyl-3-methylimidazolium Glutamine

Zhang, Q.-G.[Qing-Guo], Cai, K.-D.[Ke-Di], Jin, Z.-X.[Zhen-Xing], Wang, S.-L.[Shuang-Long], Sun, S.-S.[Si-Si]
J. Chem. Eng. Data 2010, 55, 9, 4044-4047
ABSTRACT
The molar enthalpies of solution, ?solHm(wc), of a new amino acid ionic liquid 1-butyl-3-methylimidazolium glutamine [Bmim][Glu], containing various amounts of water and with various aqueous molalities, were measured with a solution-reaction isoperibol calorimeter at (298.15 +- 0.01) K, where wc denotes water content. The standard molar enthalpies of solution of [Bmim][Glu] with given amounts of water, ?solH0m(wc), were obtained according to Archer s method. To eliminate the effect of the small amount of water in [Bmim][Glu], a linear fitting of ?solH0m(wc) versus the water content was carried out, and the intercept, ?solH0m (pure ionic liquid) = -(40.55 +- 0.06) kJ*mol-1, is the standard molar enthalpy of solution of anhydrous [Bmim][Glu]. Furthermore, the Glasser s theory of lattice energy was used to estimate the hydration enthalpy of glutamine anion [Glu]-.
Compounds
# Formula Name
1 C13H24N4O3 1-butyl-3-methyl-1H-imidazolium L-glutaminate
2 H2O water
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
  • Triple point temperature, K ; Glass
  • Glass
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 2
  • 1
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Molality, mol/kg - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Isoperibol calorimetry
  • 9
  • POMD
  • 2
  • 1
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Molality, mol/kg - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Isoperibol calorimetry
  • 6
  • POMD
  • 2
  • 1
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Molality, mol/kg - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Isoperibol calorimetry
  • 7
  • POMD
  • 2
  • 1
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Molality, mol/kg - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Isoperibol calorimetry
  • 6