Kinetics and mechanism of desulfurization and denitrogenation of coal-derived liquids. Thirteenth quarterly report, June 21-September 20, 1978

Technical Report · Fri Mar 16 04:00:00 EST 1979

DOI:https://doi.org/10.2172/5809930· OSTI ID:5809930

Gates, B. C.; Katzer, J. R.; Olson, J. H.; Kwart, H.; Stiles, A. B.

Studies of competing hydroprocessing reactions catalyzed by Ni-Mo/..gamma..-Al/sub 2/O/sub 3/ and involving quinoline, indole, dibenzothiophene, and naphthalene in n-hexadecane show that marked interactions exist. The naphthalene hydrogenation rate is markedly reduced by the presence of quinoline; whereas the reactivity of quinoline is virtually unchanged by the presence of naphthalene. Similarly the rate of hydrodenitrogenation of indole, a non-basic nitrogen-containing compounds is strongly reduced by the presence of quinoline, whereas the rate of hydro-denitrogenation of quinoline, a basic nitrogen-containing compound, is unaffected by the presence of indole. The hydrogenation reactions in the dibenzothiophene reaction network are inhibited severely as indicated by the reduction in their pseudo first-order-rate constants as are the hydrogenation reactions for naphthalene. Thus the hydrogenation rate is reduced 30-fold by increasing the initial quinoline concentration from 0.0 to 0.5 wt % in naphthalene hydrogenation and in dibenzothiophene hydrodesulfurzation. The rate of direct sulfur removal is reduced by only 3-fold by increasing the quinoline concentration from 0.0 to 0.5 wt %. These results clearly show that the rate expressions for the hydrotreating reactions are of the form given in the text.

• Research Organization: Delaware Univ., Newark (USA)
• Sponsoring Organization: US Energy Research and Development Administration (ERDA)
• DOE Contract Number: EX-76-C-01-2028
• OSTI ID: 5809930
• Report Number(s): FE-2028-15
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
AZINES
AZOLES
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
CONDENSED AROMATICS
DATA
DATA FORMS
DENITRIFICATION
DESULFURIZATION
ELEMENTS
EXPERIMENTAL DATA
GRAPHS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INDOLES
INFORMATION
LIQUEFACTION
METALS
MOLYBDENUM
NAPHTHALENE
NICKEL
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PROCESSING
PYRIDINES
PYRROLES
QUINOLINES
REFINING
REFRACTORY METALS
REMOVAL
STRUCTURAL MODELS
SULFUR
TABLES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS