HYDROFINING CATALYST FOR DIESEL FUEL Russian patent published in 2020 - IPC B01J23/882 B01J21/04 B01J27/19 B01J31/18 B01J31/22 B01J32/00 C10G45/08 

FIELD: chemistry.

SUBSTANCE: invention relates to catalysts for hydrofining of diesel fuel with low content of sulfur. Described is a catalyst comprising, 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; support – balance containing, wt%: in terms of oxides of non-metals SiO₂ – 0.1–20 and B₂O₃ – 0–10; Na is not more than 0.03; γ- and χ-Al₂O₃ – balance, wherein ratio of low-temperature forms of aluminum oxide χ-Al₂O₃ and γ-Al₂O₃ in the support in wt% is (0–40):(100–60). Catalyst has specific surface area of 140–180 m²/g, pore volume of 0.35–0.70 cm³/g, average pore diameter of 9–13.5 nm and is particles with cross-section in form of circle, trefoil or quartet with diameter of circumscribed circle of 1.0–1.6 mm and length of up to 20 mm. After sulphurisation using known techniques, catalyst contains, wt.%: 11–14 Mo, 2–4 Co, 0.8–1.5 P, 9.0–11.4 S; carrier – balance, wherein carrier contains, wt%: SiO₂ – 0.1–20.0 and B₂O₃ – 0–10; Na is not more than 0.03; γ- and χ-Al₂O₃ – balance, wherein ratio of low-temperature forms of aluminum oxide χ-Al₂O₃ and γ-Al₂O₃ in the support in the following ratios, wt%: (0–40):(100–60).

EFFECT: maximum activity of the catalyst in target reactions occurring during hydrofining of diesel fuel.

4 cl, 1 tbl, 7 ex