Red mud, and red mud activated by dissolution in hydrochloric acid and
reprecipitation with ammonia, were tested as catalysts for the hydrog
enation of an anthracene oil in a trickle-bed reactor. Conversion data
were determined for the different polyaromatic compounds in the anthr
acene oil. Red mud shows appreciable catalytic activity, which is enha
nced by the activation. Although both red mud and activated red mud ar
e less active than a commercial Ni-Mo/gamma-alumina hydrotreating cata
lyst, the difference in activity is smaller when conversion to hydroar
omatics instead of total conversion of reactants is Considered.