CATALYST SYSTEM AND METHOD FOR HYDROTREATMENT HEAVY OILS Russian patent published in 2014 - IPC B01J23/28 B01J23/30 B01J23/88 B01J23/888 B01J23/22 B01J27/47 B01J29/70 C10G45/04 C10G45/12 C10G45/14 C10G45/16 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a catalyst system for hydrotreatment of heavy oils. Said catalyst system includes a catalyst having a hydrogenation catalyst function and a cocatalyst. Said catalyst having a hydrogenation function is selected from: a catalyst consisting of MoS₂ or WS₂, or a mixture thereof in form of plates, or an oil-soluble precursor thereof; a catalyst consisting of MoS₂ or WS₂, or a mixture thereof in form of plates, or an oil-soluble precursor thereof and V, Ni and Fe sulphides; a catalyst consisting of MoS₂ distributed in a carbon-containing matrix which includes crystalline domains of V, Ni and Fe sulphides. The cocatalyst includes nano- or microparticles and is selected from cracking and/or denitrification catalysts, where said cocatalyst consists of zeolites and/or supported oxides, or sulphides, or Ni and/or Co sulphide precursors, in a mixture with Mo and/or W. The invention also relates to a method for hydrotreatment of heavy oils using said catalyst system.

EFFECT: disclosed catalyst system has a synergetic effect on the reaction medium.

13 cl, 2 tbl, 5 ex