FIELD: chemistry.
SUBSTANCE: present invention relates to a composition for use as a catalyst for hydrodesulphurisation of distillate, a method of preparing said composition and a method of obtaining distillate. Described is a method of preparing a composition for use as a catalyst for hydrodesulphurisation of distillate, involving: combined grinding of inorganic substance, molybdenum trioxide particles having size ranging from 0.2 to 150 mcm and a nickel compound to form a mixture; moulding said mixture into particles; and calcining said particles to form a calcined mixture, where said calcination is carried out while controlling temperature conditions such that calcination temperature ranges from approximately 600°C (1112°F) to approximately 760°C (1400°F) for a calcination period of time which is sufficient for obtaining said calcined mixture, having such pore size distribution that at least 70% of total pore volume of said calcined mixture is due to pores of said calcined mixture, having diameter ranging from 70 Å to 150 Å, and where said calcined mixture has molybdenum content ranging from 7 wt % to 22 wt %, where the weight percentages are based on molybdenum in metal form and total weight of the calcined mixture, and content of group VIII metal ranging from 3 wt % to 12 wt %, where the weight percentages are based on group VIII metal in its elementary form and total weight of the calcined mixture. Described is a catalytic composition containing a calcined mixture obtained by calcining a mixture containing an inorganic oxide, molybdenum trioxide particles having the size given above, a group VIII meta with content given above. Described is a method of obtaining distillate with ultralow content of sulphur, involving contact of starting material at suitable desulphation conditions with the composition described above.
EFFECT: obtaining distillate with ultralow content of sulphur, having sulphur concentration less than 50 wt ppm.
14 cl, 4 tbl, 11 ex, 1 dwg
