Reaction Kinetics Of N₂O One-step Oxidation Benzene To Phenol Over Fe-ZSM-5 Zeolite Catalyst

The intrinsic kinetic experiments of N₂O one-step oxidation benzene to phenol over Fe-ZSM-5 zeolite catalyst were carried out in an isothermal integral reactor under the following conditions: atmosphere pressure, 380-430°C and feed gas concentration of 3%～10 mol% N₂O, 40%～52 mol% benzene (He taken as balance gas). And 25 groups of intrinsic kinetic data were obtained.Based on the analysis of thermodynamics, reaction net and reaction mechanism about N₂O one-step oxidation benzene to phenol over Fe-ZSM-5 zeolite catalyst, The double power law type and mechanism type kinetic models for Fe-ZSM-5 zeolite catalyst were established, the kinetic parameters were estimated by means of Simplex-Marquardt optimal method and Merson integral method. Statistical test showed that the kinetic models established here not only agree well with the experiment results, but are highly acceptable and reliable also. The contrasting analysis, hower, showed that the mechanism type kinetic models had more agreement with the experimental results than pawer law kinetic models, therefore, the mechanism type kinetic models established here were finally chosed as the describing model of Fe-ZSM-5 zeolite catalyst kinetic performance.