Diesel oil hydrodesulfurization catalyst and preparation method thereof

The invention discloses a diesel oil hydrodesulfurization catalyst and a preparation method thereof.The preparation method comprises the steps that phosphoric acid, molybdenum oxide and nickel or cobalt salt are sequentially added into deionized water, then heating is conducted, and cooling is conducted after the solution is clarified and transparent; zinc salt is added and stirred, the volume is fixed after the zinc salt is completely dissolved, and metal impregnation liquid is obtained; and impregnating the carrier in the metal impregnation liquid by adopting an equivalent-volume impregnation method, drying and roasting to obtain the diesel oil hydrodesulfurization catalyst. According to the preparation method, the acting force between the carrier and the active metal can be adjusted, rapid impregnation of the carrier is facilitated, impregnation liquid is uniformly distributed in the catalyst carrier by active components, and thus the high-activity diesel oil hydrodesulfurization catalyst is prepared. 本发明公