Kinetic study on CO2 reforming of methane

The kinetics of CO2 reforming of methane has been studied at 976-1033K on a commercial NiO/CaO/Al2O3 catalyst in a packed-bed continuous reactor. The reaction was carried out at atmospheric pressure and CO2/CH4 ratio > 2. The Hougen-Watson rate models were fitted to experimental data assuming the di ssociative adsorption of methane as the rate-determining step. The reaction rate showed an effective reaction order of about unity for CH4. The appare nt activity energy was found to be 104kJ . mol(-1). Therefore the kinetic r eaction parameters were determined and a possible reaction mechanism was pr oposed.