Article history: The kinetics of the catalytic combustion of benzene at different concentrations over the Received 8 December 2015 NiMnO /CeO /Cordierite catalyst were investigated to gain more insight into the catalytic reaction mech- 3 2 Received in revised form 20 January 2016 anism. A kinetic study was performed in a packed-bed tubular reactor under different conditions. The Accepted 20 January 2016 catalytic combustion kinetics were modeled using a Power-Law model and the Mars–Van Krevelen Available online 22 January 2016 model. The results showed that the Mars–Van Krevelen kinetic model provided a signiﬁcantly better ﬁt to explain the catalytic combustion kinetics of benzene over the NiMnO /CeO /Cordierite catalyst. 3 2 Keywords: The results showed that the reduction reaction occurred more easily than did the oxidation reaction Kinetic study on the surface of the catalyst. Moreover, the values of the pre-exponential factor for the reduction steps Catalyst mechanism 11 −1 9 −1 (7.84 × 10 s ) is higher than those of the oxidation steps (1.04 × 10 s ), indicating that the more is the NiMnO /CeO /Cordierite catalyst 3 2 effective collision times between the activated molecules, and the easier for chemical reaction to occur, and the
Journal of Molecular Catalysis A: Chemical – Elsevier
Published: May 1, 2016
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