CATALYST AND METHOD FOR HYDRODESULFURIZATION OF PETROLEUM HYDROCARBONS

摘要

The present invention provides a hydrodesulfurization that can attain an extremely high depth of desulfurization to a sulfur content of 10 ppm by mass and maintain such a high desulfurization activity for a long period of time. The catalyst comprises an inorganic porous support containing alumina and phosphorus, at least one active metal selected from the metals of Group 8 of the periodic table, and at least one metal selected from the metals of Group 6A of the periodic table, the Group 8 metal and the Group 6A metal being contained in a molar ratio defined by [oxide of the Group 8 metal]/[oxide of the Group 6A metal] ranging from 0.055 to 0.150, and the content of the Group 6A metal in terms of oxide being in the range of 30 to 40 percent by mass based on the mass of the catalyst.