Kinetics of the gasification of a Rio Turbio coal under different pyrolysis temperatures

► Kinetics of gasification of Rio Turbio coal was studied by gas chromatography. ► Reactivity of the chars decrease slightly with the increase in pyrolysis temperature. ► For pyrolysis at 1223 K the CO2 concentration has no influence in the reaction rate. ► For pyrolysis at 1123 K a 0.5 reaction order was found for CO2 concentration below 30%. ► Reaction rate is well correlated with grain model and random pore model.