CATALYST FOR HYDROFINING HEAVY PETROLEUM CUTS AND METHOD OF PREPARING SAID CATALYST Russian patent published in 2011 - IPC B01J21/04 B01J21/08 B01J23/30 B01J23/14 B01J37/02 B01J23/755 B01J23/28 B01J23/20 B01J27/14 C10G45/08 

FIELD: chemistry.

SUBSTANCE: invention relates to production of hydrofining catalysts. Described is a catalyst for hydrofining heavy petroleum cuts which contain active components: [Si·(WO₃)₁₂] in amount of 1.0-9.0 wt %; [P-(WO₃)₁₂] in amount of 1.0-9.0 wt %; [Si-(MoO₃)₁₂] in amount of 4.0-22.0 wt %; [P-(MoO₃)₁₂] in amount of 6.0-22.0 wt %; active component promoter - nickel oxide NiO, in amount of 3.0-8.0 wt %; carrier modifier - V₂O₅ in amount of 0.5-5.0 wt % and SnO₂ in amount of 0.1-4.0 wt %; aluminium oxide Al₂O₃ in amount of 84.4-21.0 wt %. Described also is a method of preparing said catalyst, involving saturation of the carrier with a solution of a molybdenum or nickel compound, involving synthesis and saturation of the modified carrier: V₂O₅, SnCl₄·5H₂O, H₄[Si(W₁₂O₄₀)]·10H₂O, H₄[P(W₁₂O₄₀)]·10H₂O is added to aluminium hydroxide peptised with a monobasic acid; the mixture of starting compounds is evaporated to residual moisture of 60-70%, moulded in form of extruded articles, dried and calcined, with the final calcination temperature of the carrier equal to 550°C; the calcined extruded articles then undergo one-time saturation with an impregnating solution which contains heteropoly-compounds of molybdenum H₄[Si(Mo₁₂O₄₀)]·21H₂O, H₄[P(Mo₁₂O₄₀)]·14H₂O and nickel nitrate Ni(NO₃)₂·6H₂O, with pH of the medium equal to 3.0-5.5, followed by thermal treatment of the ready catalyst.

EFFECT: catalyst characterised by high activity when hydrofining heavy petroleum cuts is obtained.

5 cl, 3 tbl, 7 ex