“…Given that the reported temperatures were the operating temperatures (i.e., air temperature) and not the temperatures within the solid matrix, localized temperatures where the reaction takes place may be higher (or lower). GAC has the potential to autoignite at temperatures >450 °C in air or inert atmospheres due to its oxygenated functional groups . In this study, below 800 °C, we did not observe autoignition of the GAC.…”