| abstract |
FIELD: petrochemical process catalysts. SUBSTANCE: calcined aluminum hydroxide is mixed with dolomite, mechanically activated, agglomerated in presence of low-temperature pore-formers decomposing to evolve gases at 60-120 C, hydrated with live steam or steam-air mixture at 60-90 C, calcined at 450-620 C, and cooled at rate 10-15 C/min to temperature by 70-150 C inferior to calcinations temperature. According to invention, pore-formers utilized are ammonium carbonate, sodium carbonate, or sodium bicarbonate and agglomeration paste or catalyst is impregnated by polymetallic solution with pH 1 to 7 and then subjected to heat treatment. Catalyst can be, in particular, used to remove sulfur from crude oil. EFFECT: improved preparation procedure. 3 cl, 2 ex |