ABSTRACT

The energy of combustion of a pure sample diphenyl oxide in crystal and liquid states at T=298.15K was determined by isoperibolic calorimeter combustion. The enthalpy of fusion, the triple-point temperature and the purity of the sample were estimated by studying the melting process by calorimetric method. The enthalpies of formation in the crystalline, liquid and gaseous states were calculated. All results are compared with the experimental values reported in the literature. The value of gas-phase enthalpy of formation was calculated by G4 method in combination with isodesmic reactions. The results of this calculation are in good agreement with the obtained experimental value.

Compounds

#	Formula	Name
1	CO2	carbon dioxide
2	H2O	water
3	O2	oxygen
4	C12H10O	diphenyl ether

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 of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Gas	Adiabatic calorimetry	1
POMD	4	Triple point temperature, K ; Crystal			Crystal Liquid Gas	Adiabatic calorimetry	1
POMD	4	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small (less than 1 g) adiabatic calorimetry	8
POMD	4	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small (less than 1 g) adiabatic calorimetry	9
RXND	4 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

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Standard enthalpy of formation of diphenyl oxide

Lukyanova, V.A., Pimenova, S.M., Druzhinina, A.I., Tarazanov, S.M., Dorofeeva, O.V.

ABSTRACT