| 摘要 |
FIELD: petrochemical process catalysts. ^ SUBSTANCE: invention provides catalyst for hydrofining of petroleum fractions, which catalyst shows elevated strength and stability upon regeneration. This is achieved supplementing alumina-based carrier with texturing additives selected from alumina and gibbsite thermochemical activation product in amount 5 to 30 wt %. Alumina additive is used with particle size not larger than 15 mum and gibbsite thermochemical activation product with that not larger than 45 mum. As binding agent in catalyst, nitric acid is used at molar ratio to alumina (0.01-0.03):1 and/or aluminum nitrate/ aluminum metal reaction product in amounts 1 to 5% based on alumina. Prior to be impregnated, catalyst is steamed at elevated temperature and impregnation is carried out from aqueous solution of nickel-cobalt-molybdenum-containing complex at pH 1-3. ^ EFFECT: improved performance characteristics of catalyst. ^ 2 cl, 3 tbl, 10 ex |
