Ni/Co Mo P on titania-alumina hydrodesulfurizing catalyst and process of hydrodesulfurizing using the same

Claim 1

In the process of hydrodesulfurizing petroleum fractions, such as petroleum distillate or petroleum resid at elevated temperatures and superatmospheric pressure by passing hydrogen and the petroleum fraction over a hydrodesulfurizing catalyst consisting of an alumina support promoted with metals of Group IV-B, Group VI-B and Group VIII, the improvement which comprises conducting the hydrodesulfurization over a high strength, abrasion-resistant catalyst having an "Abrasion Index" of less than about 10% and a "Crush Index" of less than about 10; the catalyst being in the form of an anhydrous pellet consisting of a substrate and catalytic promoters, the substrate being essentially an intimate mixture of dehydrated alumina and a Group IV-B metal oxide selected from anatase and zirconia; the catalytic promoters containing at least one Group VIII metal oxide selected from the oxides of Fe, Ni or Co; and a Group VI-B metal compound selected from the metals of Mo and W, which metal compound is present in the form of a metal phosphate.