The present invention relates to a catalyst for heavy oil hydrogenization treatment. It uses the aluminium oxide containing silicon and phosphorus as carrier. In particular, it is a catalyst made up by mixing silicon-bearing and phosphorus-bearing macropore and micropore aluminium oxides, carrying elements of molybdenum, nickel and phosphorus. Said catalyst contains (wt%) 10-30% of MoO3, 2-6% of NiO and 2-6% of P, and its specific surface area is 160-190m2/g, pore volume is 0.30-0.40 ml/g and its average pore diameter is 7.0-9.5 nm. Because the silicon and phosphorus are added in the carrier by using fractional gelatination method, the greater parts of silicon and phosphorus are dispersed on the surface of aluminium oxide, so that it has the good denitrification function. |