The standard molar energies of combustion, DcU m ocr; 298:15 KP, of a-D-glucoheptono-1,4-lactone (GH) and a,b-glucooctanoic- 1,4-lactone (GO) were obtained by micro-combustion calorimetry. The obtained values are (2924.6 +- 2.3) kJ mol 1 and (3459.5 +- 2.5) kJ mol 1, respectively. From combustion energies, the standard molar enthalpies of formation in crystalline phase, DfH m ocr; 298:15 KP, for GH and GO were determined as (1546.2 +- 2.5) kJ mol 1 and (1690.6 +- 2.7) kJ mol 1, respectively. Also it was found that when the hydroxyl group number increases in the aldonolactones their standard molar enthalpies of formation increase too.
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
H2O
water
3
O2
oxygen
4
C8H14O8
alpha, beta-Glucooctanoic gamma-lactone
5
C7H12O7
D-glycero-D-gulo-Heptonic acid, gamma-lactone
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
4
Molar heat capacity at constant pressure, J/K/mol ; Crystal
Temperature, K; Crystal
Pressure, kPa; Crystal
Crystal
Small sample (50 mg) DSC
1
POMD
4
Mass density, kg/m3 ; Crystal
Temperature, K; Crystal
Pressure, kPa; Crystal
Crystal
Pycnometric method
1
POMD
5
Molar heat capacity at constant pressure, J/K/mol ; Crystal
Temperature, K; Crystal
Pressure, kPa; Crystal
Crystal
Small sample (50 mg) DSC
1
RXND
4
1
2
3
Specific internal energy of reaction at constant volume, J/g
Micro-bomb calorimetry
1
RXND
5
1
2
3
Specific internal energy of reaction at constant volume, J/g