abstract |
FIELD: catalysts in petroleum processing. SUBSTANCE: aluminum hydroxide containing 20-30% solids is mixed with boric and phosphoric acid solutions at pH 2.0-3.5. Suspension obtained is stirred at 50-70 C for 5-10 min, after which ammonium paramolybdate and nickel nitrate are successively added and mixture is dried at 110-150 C and calcined at 500-550 C. EFFECT: increased catalyst activity. 1 tbl |