The standard (p = 0.1 MPa) molar enthalpies of formation, in the gaseous state, at T = 298.15 K, for 2,5- dimethyl-3-furancarboxylic acid, 3-acetyl-2,5-dimethylfuran, and 4,5-dimethyl-2-furaldehyde were derived from the values of the standard molar enthalpies of formation, in the condensed phase, and the standard molar enthalpies of phase transition from the condensed to the gaseous state. The values of the standard molar enthalpies of formation of the compounds in the condensed phases were calculated from the measurements of the standard massic energies of combustion obtained by static bomb combustion calorimetry. The enthalpies of vaporization/sublimation were measured by Calvet high temperature microcalorimetry. For 2,5-dimethyl-3-furancarboxylic acid the standard enthalpy of sublimation was also calculated, by the application of the Clausius-Clapeyron equation, to the temperature dependence of the vapor pressures measured by the Knudsen effusion technique.
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
H2O
water
3
O2
oxygen
4
C7H8O2
4,5-dimethyl-2-furaldehyde
5
C8H10O2
3-acetyl-2,5-dimethylfuran
6
C7H8O3
2,5-dimethyl-3-furancarboxylic acid
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 enthalpy, kJ/mol ; Gas
Temperature, K; Gas
Pressure, kPa; Gas
Gas
Drop calorimetry
1
POMD
5
Molar enthalpy, kJ/mol ; Gas
Temperature, K; Gas
Pressure, kPa; Gas
Gas
Drop calorimetry
1
POMD
6
Molar enthalpy, kJ/mol ; Gas
Temperature, K; Gas
Pressure, kPa; Gas
Gas
Drop calorimetry
1
POMD
6
Vapor or sublimation pressure, kPa ; Crystal
Temperature, K; Crystal
Crystal
Gas
Calculated from knudsen effusion weight loss
33
RXND
6
1
2
3
Specific internal energy of reaction at constant volume, J/g
Static bomb calorimetry
1
RXND
4
1
2
3
Specific internal energy of reaction at constant volume, J/g
Static bomb calorimetry
1
RXND
5
1
2
3
Specific internal energy of reaction at constant volume, J/g