CATALYST OF SELECTIVE HYDRAULIC CLEANING OF HIGH-SURFACE OLEFINS-CONTAINING HYDROCARBON RESERVES Russian patent published in 2018 - IPC B01J23/888 B01J21/18 B01J37/02 C10G45/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a catalyst for the selective hydrodesulfurization of a high-sulfur olefin-containing hydrocarbon feedstock and a method for its preparation. Catalyst contains at least one of the following heteropolyanions [SiW₁₂O₄₀]^4-, [SiW₁₁O₃₉]^8-, [SiW₉O₃₄]^10-, [PW₁₂O₄₀]^3-, [PW₁₁O₃₉]^7-, [PW₉O₃₄]^9-, [Ni(OH)₆W₆O₁₈]^4-, [Fe(OH)₆W₆O₁₈]^3- and complexant Ni and Fe, containing at least two carboxyl groups and 2–10 carbon atoms deposited on a porous carrier with a carbon content of 0–10 wt. %, wherein the content is calcined at 550°With catalyst W is 9–19 wt. % Ni – 0.4–4 wt. % and Fe – 0.2–3 wt. %. Catalyst has a specific surface of 150–350 m²/g, pore volume 0.3–1.0 cm²/g, the average pore diameter of 4.0–10.0 nm. Method of preparation of the catalyst includes the impregnation of a porous carrier with a carbon content of 0–10 wt. % moisture content, followed by drying, at that, the carrier is evacuated and impregnated once with an aqueous solution of the precursors of the active components.

EFFECT: proposed catalyst allows selective hydrotreating of high-olefin-containing hydrocarbon feedstock under mild conditions and maintaining the octane number.

6 cl, 10 ex, 2 tbl