Hence, the catalytic activity of
CaO was higher than that of Ca(OH)2 [11]. Presently, as a result
of the co-existence of Ca(OH)2 and CaO, the surface basicity of
the M-CaO_RT and M-CaO_100 catalysts is lower than that of the
U-CaO catalyst (1.79 mmol/m2
),