SELF-ACTIVATING HYDROPROCESSING CATALYST HAVING ENHANCED ACTIVITY AND SELF-ACTIVATION CHARACTERISTICS AND ITS USEFOR TREATING RESID FEEDSTOCKS

摘要

A self-activating catalyst for treating heavy hydrocarbon feedstocks that comprises a calcined particle treated with a sulfoxide compound in the presence of hydrogen. The calcined particle comprises a co-mulled mixture made by co-mulling inorganic oxide powder, molybdenum trioxide powder, and a nickel compound and then forming the co-mulled mixture into a particle that is calcined to thereby provide the calcined particle. The calcined particle comprises from 1 to 10 weight percent molybdenum and nickel that is present in an amount such that the weight ratio of said nickel-to-molybdenum is less than 0.4. The calcined particle has a pore size distribution that contributes to the unique properties of the catalyst. The enhanced self-activating catalyst is used in the hydroprocessing of heavy residue feedstocks that have high nickel, vanadium and sulfur concentrations.