CATALYST FOR HYDROFINING DIESEL FRACTIONS AND METHOD FOR PRODUCTION THEREOF

摘要

FIELD: chemistry.SUBSTANCE: invention relates to an aluminium oxide-based catalyst for hydrofining diesel fractions and contains, wt %: nickel or cobalt oxide - 3.0-7.0, molybdenum oxide (MoO) - 16-22.0, including: in the form of molybdenum trioxide - 8-11, phosphomolybdic acid in terms of molybdenum trioxide - 8-11, tungsten oxide (WO) - 12.0, phosphorus - 0.37, aluminium oxide - the balance. The catalyst is obtained by modifying a support by successively adding to aluminium hydroxide a solution of phosphotungstic acid and aqueous ammonium paramolybdate solution, extrusion moulding, drying and annealing. The annealed modified support is impregnated with a combined solution of phosphomolybdic acid and cobalt or nickel salts for 1.5-2 hours while stirring and heating to 55-60°C. The obtained catalyst is dried and annealed.EFFECT: high catalytic activity, which provides high output of a stable hydrogenation product and obtaining diesel fuels with ultralow sulphur content.2 cl, 1 tbl, 6 ex