Patent ID: 7691774

Claim:
A process for producing a hydrodesulfurization and isomerization catalyst for a sulfur-containing hydrocarbon oil, which comprises supporting palladium on a composition comprising a platinum-supported sulfated zirconia and alumina, which comprises conducting the following (1)-(5) in the recited order: (1) an alumina-mixing step of mixing a platinum-supported sulfated zirconium hydroxide and pseudoboehmite; (2) a molding step of molding the resulting mixture into a catalyst molded form; (3) a calcining step in which the molded form is calcined at a temperature of 200° C. to 800° C. for a period of 0.5 to 10 hours in an oxidizing atmosphere to stabilize it; (4) a palladium-supporting step of supporting palladium on the calcined molded form; and (5) a calcining step of the palladium-supported product in which the palladium-supported product is calcined at a temperature of 100° C. to 800° C. for a period of 0.5 to 10 hours in an oxidizing atmosphere to produce a final catalyst.