| abstract |
The catalyst of the present invention is a hydrodesulfurization catalyst which is supported on a composite oxide carrier containing a specific amount of alumina and HY zeolite having a specific microcrystalline diameter, and is carried by a long-term periodic table. One or more metals selected from the group consisting of Group 6 elements and one or more metals selected from the group consisting of Group 9 elements and Group 10 elements, phosphorus, and organic acids; The catalyst contains the above-mentioned Group 6 metal and 1 to 15% by mass of the aforementioned Group 9 and Group 10 metals, and 1.5 to 8% by mass of phosphorus based on the catalyst in terms of oxide, 10 to 40% by mass, Further, it contains an organic acid-derived carbon based on a catalyst and converted to 0.8 to 7% by mass in terms of an element; and the catalyst contains an organic substance per 1 mole of the above-mentioned Group 9 element and Group 10 element. The acid is 0.2 to 1.2 moles; further, the specific surface area, pore volume, and average pore diameter in the pore distribution of the catalyst are within a specific range. |