PROTECTIVE LAYER CATALYST FOR HYDROFINING OF SILICON-CONTAINING HYDROCARBON MATERIAL Russian patent published in 2019 - IPC B01J23/883 B01J31/22 B01J31/16 B01J31/04 C10G45/08 

FIELD: chemistry.

SUBSTANCE: invention relates to catalysts of protective layer arranged in front of main hydrotreating catalyst of hydrocarbon raw material to prevent its contamination with silicon compounds contained in hydrofining feed. Described is a catalyst which contains molybdenum and nickel in form of nickel alumohemopolymolybdate with Andersen structure NiH[Al(OH)₆Mo₆O₁₈] – 5.5–7.7 wt% and in the form of nickel molybdate NiMoO₄ – 4.6–6.4 wt%; carrier – balance; wherein the carrier contains, wt%: aluminum borate Al₃BO₆ with norbergite structure – 5.0–25.0; γ-Al₂O₃ – balance. Catalyst has specific surface area of 245–275 m²/g, pore volume 0.50–0.55 cm³/g, average pore diameter of 80–85 Å, is granules in cross-section in form of a clover with size from top to the middle of base 2.5±0.2 mm and length up to 10 mm. Sulphided catalyst containing wt%: Mo – 5.0–7.0; Ni – 1.7–2.3; S – 3.4–4.7; carrier – balance; wherein the carrier contains, wt%: aluminum borate Al₃BO₆ with norbergite structure – 5.0-25.0; γ-Al₂O₃ – balance.

EFFECT: high rate of extraction of silicon from the material, high capacity of the catalyst for silicon dioxide, high resistance of the catalyst to decontamination under conditions of hydrofining of hydrocarbon material.

6 cl, 3 tbl, 4 ex