This article proposes a heteropoly-compound hydrothermal deposition method for preparing a Co₄Mo₁₂/Al₂O₃ hydrodesulfurization (HDS) catalyst. The proposed method improves the dispersibility of Mo₁₂O₃₀(μ₂-OH)₁₀H₂[Co(H₂O)₃]₄ (Co₄Mo₁₂) on Al₂O₃ by hydrothermal deposition. Direct sulfurization without calcination weakens the metal-support interaction and improves the stacking of MoS₂ slabs. Furthermore, the intimate contact between Co and Mo atoms and the high Co/Mo ratio in Co₄Mo₁₂ guarantee a high concentration of active CoMoS phases. Consequently, the Co₄Mo₁₂-based catalyst presents higher activity for dibenzothiophene (DBT) HDS than do its counterparts prepared via incipient wetness impregnation.

本文提出了一种杂多化合物水热沉积法制备Co ₄ Mo ₁₂ / Al ₂ O ₃加氢脱硫（HDS）催化剂。该方法提高的分散性沫₁₂ ø ₃₀（μ ₂ -OH）₁₀ ħ ₂ [CO（H ₂ O）₃ ] ₄（联合₄沫₁₂）对Al ₂ ö ₃由水热沉积。没有煅烧的直接硫化会削弱金属与载体之间的相互作用，并改善MoS ₂的堆积平板。此外，Co和Mo原子之间的紧密接触以及Co ₄ Mo _12中的高Co / Mo比确保了高浓度的活性CoMoS相。因此，基于Co ₄ Mo ₁₂的催化剂对二苯并噻吩（DBT）HDS的活性高于通过初期湿法浸渍制备的对应物。