CATALYST WITH BIMODAL POROSITY, METHOD FOR PREPARING SAME BY COMULLING ACTIVE PHASE AND USE THEREOF FOR HYDROTREATMENT OF HYDROCARBON RESIDUUM Russian patent published in 2019 - IPC B01J23/74 B01J23/85 B01J23/883 B01J27/19 B01J27/185 B01J21/04 B01J35/10 B01J37/04 B01J37/08 B01J37/16 B01J37/20 C01F7/02 C01F7/34 C10G45/08 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a hydroconversion catalyst with a bimodal porous structure, with a completely mixed active phase containing at least one group VIB metal of the periodic table of elements, optionally at least one group VIII metal of the periodic table of elements, optionally phosphorus and annealed aluminium oxide matrix, having aluminium oxide content greater than or equal to 90 % and silicon oxide content of not more than 10 wt. % SiO₂ equivalent relative to matrix weight, including steps (a) - (j) disclosed in claim 1. Invention also relates to the catalyst obtained by such a method and to a method of treating heavy hydrocarbon feedstock involving contacting heavy hydrocarbon feedstock with hydrogen and said catalyst, wherein catalyst has specific surface S_BET from 150 to 250 m²/g, average volume diameter of mesopores from 12 to 25 nm inclusive, medium-volume diameter of macropores from 250 to 1500 nm inclusive, volume of mesopores measured by intrusion on mercury porosimeter from 0.60 ml/g to 0.80 ml/g and total volume of pores, measured by mercury porosimetry method, from 0.80 to 1.00 ml/g and macropore volume from 10 % up to 40 % of total pore volume.

EFFECT: technical result is a simpler method of producing a hydroconversion catalyst with a bimodal porous structure with a reduced number of steps and, as a result, production costs, resulting in a catalyst with improved activity, a more favourable porous structure for hydrotreatment of heavy material and requiring lower operating temperatures.

16 cl, 15 tbl, 10 ex