“…In the present study, an inflection point of K where R starts to decrease, as identified for the high-ash containing char and potassium-impregnated coal char gasification, ,,, was not observed. Additionally, the determined increase of the instantaneous reaction rate as shown in Figure is not proportional, as reported by Karlström et al, who observed a proportionality between the instantaneous conversion rate and the K/C ratio in the conversion range of 0 to 80% during CO 2 char gasification of K-rich agricultural biomass.…”