Abstract
The heat capacities of D-galactose and galactitol were measured on a quantum design physical property measurement system(PPMS) over a temperature range of 1.9―300 K, and the experimental data were fitted to a function of T using a series of theoretical and empirical models in appropriate temperature ranges. The fit results were used to calculate thermodynamic function values, C θp,m , Δ T0 S θm , and Δ T0 H θm from 0 K to 300 K. The standard molar heat capacity, entropy and enthalpy values of D-galactose and galactitol at 298.15 K and 0.1 MPa were determined to be C θp,m =(227.96±2.28) and (239.50±2.40) J·K−1·mol−1, S θm = (211.22±2.11) and (230.82±2.30) J·K−1·mol−1 and H θm = (33.95±0.34) and (36.57± 0.37) kJ/mol, respectively.
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Supported by the National Natural Science Foundation of China(No.21473198).
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Cheng, Z., Xue, B., Tan, Z. et al. Low-temperature heat capacity and standard thermodynamic functions of D-galactose and galactitol. Chem. Res. Chin. Univ. 31, 987–991 (2015). https://doi.org/10.1007/s40242-015-5263-3
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DOI: https://doi.org/10.1007/s40242-015-5263-3