Kinetics Study of Selective Hydrogenation in Aromatics Mixture over Ni-W Composite Catalysts

Ni-W/HZSM5-HMS catalysts were evaluated for benzene hydrogenation reaction at 130–190 oC. Kineticsof benzene hydrogenation was investigated under various hydrogen and benzene pressures and the effect of reactionconditions on catalytic performance was studied. The results showed that these catalysts have a good ability for thisreaction. For more study, two kinetic models have been selected and tested to describe the kinetics for this reaction.Both used models, the power law and Langmuir-Hinshelwood, provided a good fit towards the experimental data andallowed to determine the kinetic parameters. The kinetics evaluations were shown that the catalyst with Ni/W=1.5could perform this hydrogenation reaction with appropriate rate.

کلیدواژه ها:

Benzene hydrogenation ، Kinetics ، Power law model ، Langmuir-Hinshelwood model