METHOD OF PREPARING A DIESEL FUEL HYDROFINING CATALYST Russian patent published in 2020 - IPC B01J37/02 B01J37/08 C10G45/04 

FIELD: chemistry.

SUBSTANCE: invention relates to catalysis. Described is a method of preparing a hydrotreating catalyst for diesel fuel, characterized in that the catalyst is prepared by impregnating a support containing, in terms of oxides of non-metals SiO₂ – 0.1–20 wt.% and B₂O₃ – 0–10 wt.%, sodium – not more than 0.03 wt%, γ- and χ-Al₂O₃ – balance, wherein ratio of low-temperature forms of aluminum oxide χ-Al₂O₃ and γ-Al₂O₃ in support is (0–40):(100–60) wt%, with an aqueous solution simultaneously containing a mixture of complex compounds [Co(H₂O)₂(C₆H₅O₇)]₂[Mo₄O₁₁(C₆H₅O₇)₂], Co₂[H₂P₂Mo₅O₂₃] and (NH₄)₄[Mo₄(C₆H₅O₇)₂O₁₁], followed by drying, wherein concentrations of solution components provide a catalyst which includes, wt.%: [Co(H₂O)₂(C₆H₅O₇)]₂[Mo₄O₁₁(C₆H₅O₇)₂] – 11.42–18.9, Co₂[H₂P₂Mo₅O₂₃] – 12.1–22.6 and (NH₄)₄[Mo₄(C₆H₅O₇)₂O₁₁] – 3.25-4.73, carrier – balance; followed by sulphurisation and obtaining catalyst composition, wt.%: 11–14 Mo, 2–4 Co, 0.8–1.5 P, 9.0–11.4 S; carrier – balance; wherein carrier comprises, wt.%: SiO₂ – 0.01–20.0 and B₂O₃ – 0–10; Al₂O₃ – balance.

EFFECT: increased activity of the catalyst.

4 cl, 1 tbl, 7 ex