Hydrodesulfurization catalyst as well as preparation method and application thereof

The invention discloses a hydrodesulfurization catalyst as well as a preparation method and application thereof. The catalyst comprises an active component, an auxiliary component and a carrier, the carrier is a Meso-USY-Al2O3 carrier, and the molecular weight of the catalyst is 100-200; the active component is Mo; the auxiliary agent component is Ni or Co; wherein the Meso-USY-Al2O3 carrier is a composite carrier of a hierarchical pore Y molecular sieve and gamma-Al2O3 (aluminum oxide). The carrier is a composite carrier of a multistage mesoporous Y molecular sieve and gamma-Al2O3, has a mesoporous structure and a large specific surface area, and can improve the performance of a hydrodesulfurization catalyst. 本申请公开一种加氢脱硫催化剂及其制备方法和应用，所述催化剂包括：活性组分、助剂组分和载体；所述载体为Meso-USY-Al2O3载体；所述活性组分为Mo；所述助剂组分为Ni或Co；其中，所述Meso-USY-Al2O3载体为多级孔Y分子筛与γ-Al2O3的复合载体。该载体为多级介孔Y分子筛与γ-Al2O3的复合载体，具有介孔结构，且比表面积大，可提高加氢脱硫催化剂的性能。