| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: method involves formation of moulded particles containing at least 90 wt % boehmite excluding water; thermal treatment of the said moulded particles at controlled temperature to convert the said boehmite of the said moulded particles to gamma-aluminium oxide; maintaining the said controlled temperature in a calcination temperature interval from approximately 454C (850F) to 510C (950F), so as to convert the said boehmite to a crystalline intermediate phase of aluminium oxide with formation of thermally treated moulded particles, containing less than 5 wt % boehmite in terms of total mass of the said thermally treated moulded particles and where less than 5 wt % of the said aluminium oxide of the said thermally treated moulded particles are a crystalline intermediate phase of aluminium oxide different from gamma-aluminium oxide and; combining a hydrogenising catalyst component with the said thermally treated moulded particles with formation of impregnated thermally treated moulded particles; and thermal treatment of the said impregnated thermally treated moulded particles at temperature ranging from 471C (880F) to 532C (990F) with formation of the said catalyst composition. The invention also relates to a catalyst composition obtained using the said method and a desulphurisation method using the said catalyst composition. ^ EFFECT: method is presented for preparing a highly active catalyst which is suitable for use in desulphurisation of an initial middle distillate such as diesel fuel, which has high concentration of sulphur, with obtaining of a middle distillate with ultralow sulphur content. ^ 14 cl, 4 ex, 3 tbl, 5 dwg |
