“…The activation energies are within the ranges expected for the type reactions considered, in that several are in line with values previously published for chars and activated carbons. For example, the activation energy of reaction R.10 is in agreement with other observations [57,74,75] and the activation energy for reaction R.14 is similar to other findings [76][77][78]. Also, the activation energies of the desorption reactions (R.4, R.12r and R.18) are in agreement with results of temperature-programmed desorption experiments performed by other researchers [21,43,45,79].…”