Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4907216 | The Journal of Chemical Thermodynamics | 2018 | 5 Pages |
â¢The commercial sample of l-threonine was purified.â¢Heat capacities, energy of combustion at 298.15 K were measured.â¢The main thermodynamics functions in region from 5 to 370 K were calculated.â¢The thermodynamics functions of formation at 298.15 K were obtained.
Standard molar enthalpy of formation in the solid state at TÂ =Â 298.15Â K of l-threonine was derived from energy of combustion determined by static bomb combustion calorimetry. Heat capacity of l-threonine was measured by vacuum adiabatic calorimetry over the temperature range (7.37-371.97)Â K. Heat capacities and main thermodynamic functions in solid state were tabulated as a function of temperature from 5Â K to 370Â K. The entropy of formation and Gibbs energy of formation at TÂ =Â 298.15Â K of l-threonine in the condensed state were computed on the basis of the experimental results obtained. All results are compared with experimental values reported in the literature.