X-ray diffraction parameters and reaction rate modeling for gasification and combustion of chars derived from inertinite-rich coals

► The standard and XRD properties occurring during devolitalization was determined. ► Significant graphitization occurs at 900 °C with aromaticity equal to 0.95. ► The random pore model showed that the intrinsic reactivity correlates with the aromaticity. ► The activation energy increased with increasing aromaticity.