Abstract
The present study assessed the kinetics of methane reforming with CO2 over a Ni (10%)/La–Al2O3 bimodal pore catalyst. The prepared catalysts showed sustainable activity during a long-term activity study for 100 h at 750 °C and 1 bar. The catalyst was characterized using various analytical techniques to understand the correlation between the catalyst’s physicochemical properties and activity and stability. The kinetic data were collected in a temperature range of 550–650 °C with a step increase of 50 °C at atmospheric pressure. A Langmuir–Hinshelwood–Hougen–Watson (LHHW) model was established by assuming that the CH4 dissociative adsorption and intermediate carbon gasification is the rate-determining step. The developed kinetic expressions satisfactorily fit the experimental data, with an R2 value above 0.95. The apparent activation energies were also calculated.
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