ISODEWAXING CATALYST OF DIESEL FRACTIONS Russian patent published in 2022 - IPC B01J23/883 B01J23/85 B01J31/34 B01J31/28 B01J29/65 

FIELD: petroleum industry.

SUBSTANCE: invention relates to the field of petroleum refining, in particular, to isodewaxing catalysts of hydrotreated diesel fractions in the process of production of diesel fuel with enhanced low-temperature characteristics (winter grades). Isodewaxing catalyst of hydrotreated diesel fractions in the process of production of diesel fuel contains, wt.%: 7.0 to 14.0 Mo or 18.0 to 20.0 W; 2.0 to 7.0 Ni; 8.0, 8.4, 8.8, 9.0 to 11.4 S; a carrier the rest. The carrier therein contains a one-dimensional mesoporous zeolite ZSM-23 with an MTT structure and a 48 to 120 modulus in an amount of 40 to 60 wt.%, and a binder – aluminium γ-oxide – the rest, produced by sulphidising the following composition, wt.%: [Ni(H₂O)₂]₂[Mo₄O₁₁(C₆H₅O₇)₂] – 19.2 to 66.9, or Ni(NH₄)[HW₂O₅(C₆H₅O₇)₂] – 42.3 to 57.2, a carrier the rest. The catalyst has a specific surface area of at least 140 m²/g, a pore volume of at least 0.25 cm³/g.

EFFECT: production of low-pour-point grades of diesel fuels with a high yield of the target product (no less than 93%) in the process of isodewaxing of diesel fractions.

2 cl, 1 tbl, 7 ex