Kinetics of dimethyl ether oxidation over Pt/ZSM-5 catalyst |
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| Affiliation: | 1. School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China;2. Department of Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;3. Department of Chemical Engineering, Curtin University, Perth, WA 6845, Australia;1. CNR-IMM, via S. Sofia 64, 95123 Catania, Italy;2. Dipartimento di Fisica e Astronomia, Università di Catania, via S. Sofia 64, 95123 Catania, Italy;3. CEMES-CNRS Université de Toulouse, 29 Rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France;4. Dipartimento di Scienze Chimiche - Università di Catania and I.N.S.T.M. UdR of Catania, Viale Andrea Doria 6, 95125 Catania, Italy |
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| Abstract: | A kinetic study of dimethyl ether (DME) combustion over Pt/ZSM-5 was performed below 423 K. Power law model and Langmuir-Hinshelwood model were established to predict the reaction rate. Reaction orders for DME and O2 were 0.28 and 2.30, respectively. Activation energies for the two models were 99.35 and 109.30 kJ/mol. The reaction orders and adsorption constants suggested DME was more strongly adsorbed on Pt/ZSM-5 than O2 at low temperatures. The reliability of the models was confirmed by the comparison between the predicted and experimental conversions of DME. |
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