Patent ID: 7427578

Claim:
A method for producing a hydrorefining catalyst by bringing a carrying solution into contact with a carrier composed of an inorganic porous oxide, the hydrorefining catalyst containing molybdenum, phosphorus, cobalt and nickel and being for hydrorefining a vacuum gas oil distillate product, the method comprising the steps of: preparing the carrying solution containing molybdenum, phosphorus, cobalt and nickel, and bringing the carrier into contact with the carrying solution, wherein: a molar ratio of molybdenum with respect to phosphorus in the carrying solution is 2.5 to 7.0, a molar ratio of a total of molybdenum, cobalt, and nickel with respect to phosphorus is 3.5 to 9.0, and a molar ratio of molybdenum with respect to a total of cobalt and nickel is 1.9 to 2.8; pH of the carrying solution is 2 to 5; and a Raman spectroscopy spectrum of the carrying solution has a peak top between 965 cm −1 and 975 cm −1 .