METHOD OF PRODUCING CATALYST USED FOR PETROLEUM FRACTION HYDROREFINING Russian patent published in 1996 - IPC

FIELD: oil processing. SUBSTANCE: method involves treatment of aluminosilicate carrier with boric acid, nickel amd molybdenum salts, drying and the following calcination of granulated catalyst at 500-550 C for 4-8 hr. Aluminosilicate carrier is a mixture of crystalline zeolite type "ЦВМ", aluminium hydoxide powder at moisture content 7-11 wt.-%, specific surface 145-185 кв²/g, filled density 0.9-1.0 g/см³, and aluminium hydroxide at moisture content 35-40 wt.-%, specific surface 180-250 кв²/g, filled density 0.50-0.65 g/см³ at their mass ratio = (0.15:1:2)-(0.55:1:4), respectively. Carrier treatment is carried out at 80-90 C at stirring up to homogeneous mass followed by evaporation of catalytic mass to moisture content 45-55 wt. -%. Drying is carried out at 20-35 C for 18-24 hr. EFFECT: improved method of catalyst making.