Reaction networks in catalytic hydrodenitrogenation
The catalytic hydrodenitrogenation of some nitrogen containing heterocyclic compounds, typical of those found in residual petroleum fractions and coal liquids, has been studied. In all cases examined, the reaction is a stepwise process with hydrogenation of the nitrogen containing ring as the first step. The hydrodenitrogenation of indole was studied in some detail to obtain more extensive information concerning the nature of subsequent steps. The reaction was found to proceed via the intermediates, 2,3-dihydroindole and o-ethylaniline. The predominant subsequent reaction path leads to formation of ethylcyclohexane via ring hydrogenation and ammonia elimination or direct hydrogenolysis. Direct hydrogenolysis of o-ethylaniline to ethylbenzene occurs to a lesser extent. Rate constants for the major steps in the sequence have been estimated. It has been shown that relative rates of the various steps (but not the overall reaction patter) depend on the catalyst employed.
- Research Organization:
- Engelhard Minerals and Chemicals Corp., Edison, NJ
- OSTI ID:
- 6325465
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 57:3; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AZOLES
CATALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL LIQUIDS
DENITRIFICATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HYDROGENATION
INDOLES
KINETICS
MINERAL OILS
OILS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PYRROLES
REACTION INTERMEDIATES
REACTION KINETICS
SHALE OIL
SYNTHETIC FUELS
SYNTHETIC PETROLEUM