Patent ID: 8128811

Claim:
A method for hydroprocessing a hydrocarbon feedstock using a rejuvenated supported hydroprocessing catalyst, comprising exposing the hydrocarbon feedstock to the rejuvenated supported hydroprocessing catalyst under effective hydroprocessing conditions, wherein the rejuvenated supported hydroprocessing catalyst is prepared by a process comprising: a) preparing a solution, slurry, or other mixture containing at least one Group VIB metal, at least one Group VIII metal, and a first organic complexing agent; b) stripping a supported hydrotreating catalyst, the supported hydrotreating catalyst including a support, at least one Group VIB metal, and at least one Group VIII metal; c) regenerating the stripped catalyst in the presence of an oxygen containing gas at a temperature of about 500° C. or less; d) impregnating the regenerated catalyst with the solution, slurry, or mixture; e) drying the impregnated, regenerated catalyst at a temperature of from 200 to 450° C. to produce a partially calcined, impregnated, regenerated catalyst having a carbon content of at least 5 wt % based on the weight of the partially calcined, impregnated, regenerated catalyst, the organic solvent not being present on the partially calcined, impregnated support; and f) sulfiding the partially calcined, impregnated, regenerated catalyst.