PROCESS FOR THE PREPARATION OF NEW CATALYSTS

摘要

An invention is a catalyst comprising one or more metals selected from the group consisting of nickel, cobalt, molybdenum and vanadium on a carrier and displaying the following characteristics: (1) the quotient of the specific average pore diameter (p in nm) and the specific average particle diameter (d in nm) is larger than 15, (2) the percentage (v) of the total pore volume that consists of pores with a diameter larger than 100 nm is at least 50, (3) the pore volume (y) that consists of pores with a diameter larger than 50 nm is at least 0.2 ml/g, and (4) the specific surface area is larger than 150 m2/g. The invention also extends to a process for preparing the catalyst. The catalyst is useful in the treatment with hydrogen of heavy oil to demetallize the heavy oil before the heavy oil is subjected to cracking, hydrocracking or hydrodesulphurization.