The thermodynamic properties of 2-aminobiphenyl (an intermediate in the carbazole/hydrogen reaction network) [electronic resource].
- Washington, D.C. : United States. Office of Fossil Energy, 1990.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: (57 pages) : digital, PDF file
- Additional Creators:
- United States. Office of Fossil Energy
United States. Department of Energy. Office of Scientific and Technical Information
- Catalytic hydrodenitrogenation (HDN) is a key step in upgrading processes for conversion of heavy petroleum, shale oil, tar sands, and the products of the liquefaction of coal to economically viable products. This research program provides accurate experimental thermochemical and thermophysical properties for key organic nitrogen-containing compounds present in the range of alternative feedstocks, and applies the experimental information to thermodynamic analyses of key HDN reaction networks. This report is the first in a series that will lead to an analysis of a three-ring HDN system; the carbazole/hydrogen reaction network. 2-Aminobiphenyl is the initial intermediate in the HDN pathway for carbazole, which consumes the least hydrogen possible. Measurements leading to the calculation of the ideal-gas thermodynamic properties for 2-aminobiphenyl are reported. Experimental methods included combustion calorimetry, adiabatic heat-capacity calorimetry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (d.s.c). Entropies, enthalpies, and Gibbs energies of formation were derived for the ideal gas for selected temperatures between 298.15 K and 820 K. The critical temperature and critical density were determined for 2-aminobiphenyl with the d.s.c., and the critical pressure was derived. The Gibbs energies of formation are used in thermodynamic calculations to compare the feasibility of the initial hydrogenolysis step in the carbazole/H₂ network with that of its hydrocarbon and oxygen-containing analogous; i.e., fluorene/H₂ and dibenzofuran/H₂. Results of the thermodynamic calculations are compared with those of batch-reaction studies reported in the literature. 57 refs., 8 figs., 18 tabs.
- Published through SciTech Connect.
Steele, W.V.; Nguyen, A.; Chirico, R.D.; Knipmeyer, S.E.
National Inst. for Petroleum and Energy Research, Bartlesville, OK (USA)
- Funding Information:
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