| abstract |
The present invention relates to a self-activating catalyst for treating heavy hydrocarbon feedstocks comprising fired particles treated with a sulfoxide compound in the presence of hydrogen. The fired particles include a co-kneaded mixture prepared by co-kneading an inorganic oxide powder, a molybdenum trioxide powder, and a nickel compound, wherein the co-kneaded mixture is subsequently formed into particles, and the particles are fired Thereby providing the fired particles. The fired particles comprise 1 to 10 weight percent molybdenum and nickel present in an amount such that the weight ratio of nickel to molybdenum is less than 0.4. The calcined particles have a pore size distribution that contributes to the unique properties of the catalyst. Improved self-activating catalysts are used in the hydrogenation of heavy residue feedstocks having high nickel, vanadium and sulfur concentrations. |