| abstract |
[Problem] To provide a hydrotreating catalyst for hydrocarbon oil, wherein the hydrotreating catalyst maintains high industrial productivity, has excellent desulfurization activity, and can regenerate a high performance catalyst. [Solution] On a γ-alumina carrier (a carrier composed of 100% γ-alumina or an inorganic composite oxide carrier obtained by mixing γ-alumina with a different metal element) are carried, for example, 15-28 parts by mass of molybdenum and/or tungsten in terms of oxides and 2-7 parts by mass of cobalt and/or nickel in terms of oxides with respect to 100 parts by mass of the catalyst, and the content of carbon derived from an organic acid is 2.0 parts by mass or less on an elemental basis. The catalyst has a specific surface area of 180-320 m 2 /g, and has an average pore diameter of 50-110 Å as measured by a mercury penetration method. The ignition loss of the catalyst is 5.0% or less, and the adsorption amount of nitric oxide on the sulfide-treated catalyst is 8.0 ml/g or more. |