THE KINETICS OF CATALYTIC INCINERATION OF (CH₃)₂S₂ OVER THE CuO–MoO₃/γ-Al₂O₃ CATALYST

ABSTRACT

In this study, by varying reaction conditions including particle size, space velocity, reactant concentration and reaction temperature, the kinetics of catalytic incineration of (CH₃)₂S₂ catalyzed by the CuO–MoO₃/γ-Al₂O₃ catalyst was investigated. Three kinetic models, i.e., the power-rate law model, Langmuir-Hinshelwood model and Mars-Van Krevelen model, were applied to best fit the experimental results. It was shown that the Mars-Van Krevelen model was more appropriate than the other two models for describing the mechanism of catalytic incineration of (CH₃)₂S₂ on the CuO–MoO₃/γ-Al₂O₃ catalyst. The reaction expression of the Mars-Van Krevelen model was as follows:

where α is 5.5 and C _R and C _O represent concentrations of (CH₃)₂S₂ and O₂, respectively. The enlarged difference between experimental and predicted data was observed at higher operating temperatures. This might be due to the dominating mechanism at this temperature region was different.

Keywords:

• Catalytic incineration
• (CH₃)₂S₂
• CuO–MoO₃/γ-Al₂O₃
• Mars-Van Krevelen model

Acknowledgments