Abstract
In this study, the effect of different additives on the kinetics of carbon gasification was studied by nonisothermal thermogravimetric analysis. The results showed that the carbon gasification comprised slow and fast gasification stages. Moreover, the carbon gasification was exothermic and endothermic in the low- and high-temperature regions, respectively. The nonisothermal kinetics of the carbon gasification was studied by the modified Coats-Redfern integration method. In the low-temperature region, the activation energy of the carbon gasification decreased by using B4C and SiO2 and increased by using MgO, Al2O3, and SiC. In the high-temperature region, B4C increased the activation energy, and Al2O3, MgO, SiC, and SiO2 decreased the activation energy.
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