Kinetics and mechanism of catalytic hydroprocessing of components of coal-derived liquids. Twentieth quarterly report, February 16, 1984-May 15, 1984 (open access)

Kinetics and mechanism of catalytic hydroprocessing of components of coal-derived liquids. Twentieth quarterly report, February 16, 1984-May 15, 1984

Kinetics data have been determined for the catalytic hydroprocessing of the acidic fractions of a heavy distillate of a liquid derived from Powhatan No. 5 coal. A commercial, sulfided Ni-Mo/..gamma..-Al/sub 2/O/sub 3/ catalyst was used in the experiments, carried out at 350/sup 0/C and 120 atm with the coal liquid fractions dissolved in cyclohexane. The feed and hydrotreated products were analyzed by gas chromatography/mass spectrometry. The data were analyzed with group-type methods for compound classes, and results were also obtained for some individual organooxygen compounds. Catalytic hydroprocessing leads to a large increase in the number of compounds and a shift to lower boiling ranges. The data are broadly consistent with reaction networks determined with pure compounds; the most important reactions include aromatic ring hydrogenation, hydrodeoxygenation, and hydrodemethylation. Pseudo first-order rate constants for conversion of the predominant organooxygen compounds are on the order of 10/sup -4/ L/(g of catalyst.s); the reactivity decreases in the order cyclohexylphenol > dimethylhydroxyindane > tetrahydronaphthol > phenylphenol > 1-naphthol. 12 references, 15 figures, 5 tables.
Date: June 26, 1984
Creator: Gates, Bruce C.; Olson, Jon H.; Schuit, G. C. A.; Stiles, Alvin B. & Petrakis, Leon
System: The UNT Digital Library