Gasification of carbon using calcium oxide

CO2 gasification of activated carbon catalyzed by earth alkaline elements

“…From the observation that deactivation during gasification (Figure 1) is accompanied by an evolving XRD pattern ( Figure 6 and zur Loye et al, 1984), due to crystallite formation, it can be concluded that sintering, i.e., loss of dispersion, is responsible for deactivation.…”

“…At low Ca concentration the density of the active sites is lower, so the CO formation will be lower than at high Ca concentrations, as is shown in Figure 5. In the literature more suggestions have been made that the oxide is the active species (Baker et al, 1984;Coates et al, 1983;zur Loye et al, 1984), but still no direct evidence is available. Especially in a CO, environment the CaO might be transformed into the carbonate via Eq.…”