CoP and Co₂P were prepared by temperature-programmed reduction of the mixtures of Co(OH)₂ and H₃PO₃ with stoichiometric P/Co ratios, but their surfaces were still enriched in phosphorus. Based on the product distributions of the hydrodesulfurization (HDS) of dibenzothiophene (DBT), 1,2,3,4-tetrahydro-dibenzothiophene (TH-DBT), and 1,2,3,4,4a,9b-hexahydro-dibenzothiophene (HH-DBT), a reaction network of DBT HDS was proposed and the mechanisms of the cleavage of different C−S bonds in DBT and its hydrogenated intermediates were discussed. CoP was much more active and more nitrogen-tolerant than Co₂P, which make it a promising HDS catalyst. The HDS reactions over CoP and Co₂P followed a pseudo-first-order kinetics and a pseudo-zero-order kinetics, respectively. Piperidine strongly inhibited the hydrogenation/dehydrogenation reactions and the direct desulfurization of DBT, but its inhibition on the desulfurization of TH-DBT and HH-DBT were less pronounced. The active surfaces of CoP and Co₂P in HDS reactions can be cobalt phosphosulfide phases.

CoP和Co ₂ P是通过以化学计量的P / Co比对Co（OH）₂和H ₃ PO ₃的混合物进行程序升温还原而制备的，但它们的表面仍富含磷。基于二苯并噻吩（DBT），1,2,3,4-四氢-二苯并噻吩（TH-DBT）和1,2,3,4,4a，9b-六氢-二苯并噻吩的加氢脱硫（HDS）的产物分布（HH-DBT），提出了DBT HDS的反应网络，并讨论了DBT及其氢化中间体中不同CS键断裂的机理。CoP比Co ₂ P具有更高的活性和更多的耐氮性，使其成为有前途的HDS催化剂。HDS对CoP和Co _2的反应P分别遵循伪一阶动力学和伪零阶动力学。哌啶强烈抑制DBT的加氢/脱氢反应和直接脱硫，但对TH-DBT和HH-DBT脱硫的抑制作用较弱。HDS反应中CoP和Co ₂ P的活性表面可以是磷硫化钴相。