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/y-Al,O, catalyst was used in the experiments, carried out at 350 OC 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 wlth reaction networks determined with pure compounds; the most important reactions include aromatic ring hydrogenation, hydrodeoxygenation, and hydrodemethylation. Pseudofirst-order rate constants for conversion of the predominant organooxygen compounds are on the order of L/(g of catalyst-s); the reactivity decreases in the order cyclohexylphenol > dimethylhydroxyindan > tetrahydronaphthol > phenylphenol > I-naphthol. 1978, 24, 1015. Dev. 19858, 24, 92. 31, 170. Des. Dev. 1979, 18, 625. Dev. 1983A. 22, 292. Dev. 19838, 22, 298. 68.
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