Restricted Diffusion of Model Sulfides over NiMo/BK Catalyst in the Hydrodesulfurization Conditions

The intra-particle diffusion effect on HDS of four model sulfides (including thiophene, benzothiophene, dibenzothiophene, and 4,6-dimethyldibenzothiophene) was investigated systematically over the novel NiMo/BK catalyst. The η values of NiMo/BK are higher than that of the traditional NiMo/Al₂O₃ catalyst. Then, the restrictive factors were correlated by F(λ)=(1-λ)^3.15 for NiMo/BK catalyst.