NiMo catalysts supported on hierarchically macro-mesoporous alumina were prepared and applied to the hydrodesulfurization (HDS) of dibenzothiophene (DBT). The alumina supports with different macroporous structures (either parallel macropores or interconnected macropores) were synthesized by two methods, hydrolysis of aluminum tri-sec-butoxide and dual-template approach. All hierarchically porous structured Ni-Mo/Al₂O₃ catalysts showed higher HDS activities when compared to a Ni-Mo/Al₂O₃ with only mesopores, which were mainly due to the enhanced diffusion by macropores. In particular, a dual-template derived catalyst with highly interconnected macropores and large porosity displayed the best activity, which remained stable during a long-term test of 100 h.

制备了负载在分级大孔介孔氧化铝上的Ni Mo催化剂，并将其应用于二苯并噻吩（DBT）的加氢脱硫（HDS）。通过三仲丁醇铝的水解和双模板法两种方法合成了具有不同大孔结构（平行大孔或互连大孔）的氧化铝载体。所有分级多孔结构化镍-钼/铝_2种ö ₃相比，镍-钼/铝时催化剂显示出较高的HDS活性₂ ö ₃仅具有中孔，这主要是由于大孔的扩散增强所致。特别地，具有高度互连的大孔和大孔隙率的双模板衍生的催化剂显示出最佳的活性，其在100小时的长期测试中保持稳定。