BEAD CATALYST FOR HYDROFINING HEAVY FRACTIONS AND METHOD FOR PREPARATION THEREOF Russian patent published in 2013 - IPC B01J21/04 B01J29/14 B01J29/16 B01J23/84 B01J37/00 B01J35/10 C10G45/00 C10G45/50 C10G45/54 C10G45/64 C10G45/08 C10G45/12 B01J35/08 

FIELD: chemistry.

SUBSTANCE: invention relates to hydrofining catalysts. Described is a bead catalyst for hydrofining oil fractions, which consists of an aluminium oxide support, active components - molybdenum, nickel or cobalt compounds in form of oxides and/or sulphides and, optionally, additional zeolite Y in hydrogen form, which is in form of spherical or elliptical granules, characterised by that the catalyst granules have packed density of 0.4-0.5 g/ml and pore volume of not less than 1.2 ml/g. Described is a method of preparing said catalyst, involving peptisation of the starting powder - an aluminium oxide source with aqueous solution of an organic acid to obtain a pseudo-sol, moulding the obtained pseudo-sol in ammonia solution, drying and calcination of the support with subsequent embedding of active components therein, with optional embedding of zeolite Y in hydrogen form, drying and calcination of the catalyst in an air current, wherein the starting powder - aluminium oxide source used is weakly crystalline pseudo-boehmite; peptisation thereof is carried out using aqueous solution of an organic acid with concentration of 1-15 wt % and granulation (moulding) is carried out by drip moulding with the solid to liquid ratio in the pseudo-sol of not less than 1:2 and pH of the ammonia solution of not less than 11.0.

EFFECT: high activity, selectivity and stability of the catalyst.

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