Allyl chloride epoxidation with H2O2 on TS-1/SiO2 catalyst in a fixed-bed reactor: experiments and deactivation kinetics

Abstract

The epoxidation of allyl chloride with hydrogen peroxide catalyzed by a TS-1/SiO2 catalyst in a fixed-bed reactor has been studied. The effects of reaction temperature (304–316 K), methanol concentration (73.51–76.02 wt%) and hydrogen peroxide concentration (1.44–2.02 wt%) on the reaction are investigated. The experimental results show that the decreasing rate of hydrogen peroxide conversion with reaction time on stream decreases with rising reaction temperature, methanol concentration and decreasing hydrogen peroxide concentration. The kinetics of the catalyst decay of the allyl chloride epoxidation based on the Wojciechowski model is studied by fitting the experimental data. The results show that the deactivation reaction order is two, and the catalyst exhibits higher stability with higher methanol concentration and lower hydrogen peroxide concentration.