Abstract
Red mud has been activated by dissolution in hydrochloric acid and reprecipitation with ammonia. The activated material has been evaluated as a catalyst for the hydrogenation of naphthalene, phenanthrene and pyrene and in the hydroliquefaction of both a high and low rank coal utilizing solvents of high and low hydrogen donating ability. Activation led to a substantial increase in the ability to hydrogenate the model compounds and a significant increase in oil yield was obtained in the hydroliquefaction of a low rank coal in the presence of a poor donor solvent. However, activation did not lead to significant increases in overall yields of liquids in other cases and the activated red mud was significantly less active than a commercial nickel-molybdenum-sulphur catalyst.
Original language | English |
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Pages (from-to) | 449-453 |
Number of pages | 5 |
Journal | Fuel |
Volume | 71 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Jan 1992 |
Keywords
- aromatic compounds
- coals
- hydrogenation