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The conversion rate of char highly depends on gasification temperature (Tg). However, knowledge about how the temperature affects the kinetics of CO2 gasification is still unclear. We are therefore mo...tivated to investigate relationships between Tg and behavior of catalysts activity as well the deactivation rate. Herein, we conducted the gasification of an Indonesian lignite (raw and demineralized) at 800, 850 and 900 °C until char conversion, X >99.9%. The gasification of demineralized coal can be predicted by applying random pore model (RPM). Meanwhile, the kinetics model in which consider the activity of three types of catalysts together with a type of precursor successfully predict conversion level, 1-X as result of the change in catalysts activity during gasification for X = 0-0.999 under different Tg. This paper address the higher gasification temperature increases the activity of catalyst but also the deactivation rate, but not linearly which affects conversion rate during gasification.続きを見る
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