Development of unique catalysts for hydrodenitrogenation of coal-derived liquids. Second quarterly report, December 15, 1978-March 15, 1979
Experimental runs using decahydroquinoline, o-ethylaniline, and aniline as reactants have been made. Results from decahydroquinoline runs show that carbon-nitrogen bond scission occurs by a catalytic route; it is not thermal. Strong Bronsted acid sites do not crack carbon-nitroge bonds; carbon-nitrogen bond scisson must therefore occur on other sites on the catalyst. Anilines are an important species in hydrodenitrogenation of multi-ring aromatic systems. Hydrodenitrogenation of anilines clearly shows kinetic behavior characteristic of hydrogenation including positive order dependence on hydrogen pressure and an activation energy between that for hydrogenation and that for cracking; yet the primary product appears to be the fully aromatic ring. To better understand the mechanism of hydrodenitrogenation of anilines and of substituted anilines, hydrodenitrogenation of aniline and o-ethylaniline was studied over a presulfided Ni-Mo/Al/sub 2/O/sub 3/ catalyst, and a reaction network has been determined for aniline hydrodenitrogenation. Aniline hydrodenitrogenaton appears to involve partial hydrogenation of the benzene ring to reduce aromatic resonance with the nitrogen atom reducing the C-N bond strength and facilitating elimination of NH/sub 3/.
- Research Organization:
- Delaware Univ., Newark (USA). Dept. of Chemical Engineering
- OSTI ID:
- 5582629
- Report Number(s):
- FE-3297-2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of unique catalysts for hydrodenitrogenation of coal-derived liquids. Third quarterly report, March 15-June 15, 1979
Development of unique catalysts for hydrodenitrogenation of coal-derived liquids. First quarterly report, September 15-December 15, 1978
Related Subjects
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AMINES
ANILINE
AROMATICS
CARBONACEOUS MATERIALS
CATALYSTS
CHEMICAL BONDS
CHEMICAL REACTIONS
CHEMISTRY
CLEAVAGE
COAL
COAL LIQUEFACTION
COAL LIQUIDS
CRYSTAL STRUCTURE
DATA
DATA FORMS
DENITRIFICATION
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GRAPHS
HYDROGENATION
INFORMATION
LIQUEFACTION
MICROSTRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
PROCESSING
REFINING
STRUCTURAL MODELS
TABLES
THERMOCHEMICAL PROCESSES