Comparative study of the reaction characteristics and kinetics of catalytic hydrogenation involving propylene, 1-butene, and their mixture over Pt/ZrO2
摘要
In this study, the hydrogenation reaction of propylene, 1-butene, and their equimolar mixture was conducted over a Pt/ZrO2 catalyst with varying temperatures and initial gas compositions, in order to compare the reaction characteristics and kinetics of hydrogenation involving propylene and 1-butene. The results demonstrated that the conversion of propylene was generally higher than that of 1-butene, with the difference being less pronounced in a mixture feedstock. A kinetic model based on the Langmuir–Hinshelwood mechanism was developed for each feedstock. After optimization of the parameters included in the model while meeting the physicochemical constraints, the present model was successful in reproducing the measured data, with an error margin of less than 20%. Particularly, due to the similarity of reaction characteristics between propylene and 1-butene in a mixture feedstock, it was suggested that treating them as one olefin is a good option for simplifying the rate equation