The thermodynamic properties of 1,2,3,4- and 5,6,7,8-tetrahydroquinolines: Topical report
Measurements leading to the calculation of the ideal-gas thermodynamic properties for 1,2,3,4- and 5,6,7,8-tetrahydroquinoline are reported. Thermochemical and thermophysical properties were determined by adiabatic heat-capacity calorimetry, comparative ebulliometry, inclined-piston gauge manometry, and combustion calorimetry. Results were used to calculate entropies, enthalpies, and Gibbs energies of formation for the ideal-gas state at selected temperatures to 500 K. The results of the thermodynamic property measurements reported in this Topical Report have been used to determine equilibrium constants, and hence equilibrium concentrations, for the quinoline/hydrogen/tetrahydroquinoline system at temperatures of interest in the processing of fuels from crudes with a high nitrogen content. The results prove that under typical processing conditions (650 K and 7.0 MPa hydrogen pressure) there is thermodynamic equilibrium between quinoline and 1,2,3,4-tetrahydroquinoline. The proof that equilibrium conditions exist between quinoline and 5,6,7,8-tetrahydroquinoline in processing is not as unequivocal as in the former case, but there is strong evidence of such an equilibrium. 45 refs., 11 figs., 12 tabs.
- Research Organization:
- National Inst. for Petroleum and Energy Research, Bartlesville, OK (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC22-83FE60149
- OSTI ID:
- 6433416
- Report Number(s):
- NIPER-399; ON: DE89000729
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
023000* -- Petroleum-- Properties & Composition
AROMATICS
AZAARENES
AZINES
CALORIMETRY
CHEMICAL REACTIONS
ENERGY
ENTHALPY
ENTROPY
EQUILIBRIUM
EVAPORATION
FREE ENTHALPY
HETEROCYCLIC COMPOUNDS
HYDROGENATION
ISOMERS
KINETICS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PYRIDINES
QUINOLINES
REACTION KINETICS
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE