Kinetics and mechanism of catalytic hydroprocessing of components of coal-derived liquids. Third quarterly report, November 15, 1979-February 15, 1980

Technical Report · Sat Nov 01 04:00:00 EST 1980

OSTI ID:5062535

Gates, B C; Katzer, J R; Kwart, H; Petrakis, L; Ruberto, R; Schuit, G C.A.; Stiles, A B

An asphaltene-containing SRC-II coal liquid derived from Powhatan No. 5 mine coal and produced in the Ft. Lewis demonstration plant has been selected for study of catalytic hydroprocessing reactions. Analytical separation by liquid chromatography is being carried out to produce nine district fractions from 1 kg of coal liquid. These fractions will be used as feeds to high-pressure catalytic flow microreactors. Hydroprocessing of polynuclear aromatic hydrocarbons under industrially relevant conditions has shown that these are much more reactive than benzene. The reaction networks involve reversible hydrogenation and isomerization, and significant concentrations of hydroaromatic (hydrogen-donor) species are attainable under practical conditions. Hydroprocessing of solutions containing the following combinations of compounds has also been studied: quinoline/indole, quinoline/indole/dibenzothiophene, and quinoline/indole/naphthalene. The kinetics of biphenyl hydrogenation catalyzed by sulfide Co-Mo/..gamma..-Al/sub 2/O/sub 3/ has been determined quantitatively at 70 to 200 atm and 300 to 375/sup 0/C. The effects of reversibility of the reaction and inhibition by biphenyl, H/sub 2/S, and H/sub 2/ are summarized in a rate equation of the Langmuir-Hinshelwood type. Scanning electron microscopy combined with catalytic activity measurements was used to characterize deactivated and regenerated Ni-Mo-Al/sub 2/O/sub 3/ catalysts. EDAX results determined chemical composition of the catalyst and the deposited mineral crust. The results indicate that regeneration of the catalysts can recover much of the activity lost as a result of coke formation.

• Research Organization: Delaware Univ., Newark (USA). Dept. of Chemical Engineering; Gulf Research and Development Co., Pittsburgh, PA (USA)
• DOE Contract Number: AC22-79ET14880
• OSTI ID: 5062535
• Report Number(s): DOE/ET/14880-03; ON: DE82019758
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
AZINES
AZOLES
BIPHENYL
CATALYSTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL LIQUEFACTION
COAL LIQUIDS
CONDENSED AROMATICS
DATA
DEACTIVATION
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
FLUIDS
FRACTIONATION
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGENATION
INDOLES
INFORMATION
KINETICS
LIQUEFACTION
LIQUID COLUMN CHROMATOGRAPHY
LIQUIDS
MICROSCOPY
NAPHTHALENE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLYCYCLIC AROMATIC HYDROCARBONS
PYRIDINES
PYRROLES
QUINOLINES
REACTION KINETICS
REGENERATION
RESEARCH PROGRAMS
SEPARATION PROCESSES
SRC-II PROCESS
STRUCTURAL MODELS
THERMOCHEMICAL PROCESSES