METHOD OF OBTAINING CATALYST USABLE IN HYDROPROCESSING AND IN HYDROCONVERSION Russian patent published in 2017 - IPC B01J37/02 B01J37/08 C10G45/08 B01J21/04 B01J23/74 B01J23/85 B01J27/19 B01J31/02 B01J31/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a process of the preparation of a catalyst starting from a catalyst precursor containing an alumina carrier and/or silica-alumina and/or zeolite and containing at least one Group VIB element and optionally at least one element VIII Group. The method includes impregnating mentioned precursor with a solution of (C₁-C₄)dialkylsuccinate. The method includes the step of impregnating (step 1) of mentioned dried, calcined or regenerated precursor with at least one solution containing at least one carboxylic acid other than acetic acid, followed by aging and drying at a temperature of less than or equal to 200°C, possibly followed by heat treatment at a temperature of less than 350°C; Step 1 is followed by impregnation (step 2) with a solution containing at least one (C₁-C₄)dialkylsuccinate, then aging and drying at a temperature of less than 200°C no subsequent calcination step. The catalyst precursor and/or the solution of step 1 and/or the solution of step 2 contains phosphorus. The catalyst is used in hydroprocessing and/or hydroconversion.

EFFECT: improvement of catalytic activity.

21 cl, 1 dwg, 2 tbl, 8 ex