The hydrodynamics and the mass-transfer impact of the three-phase trickle-b
ed reactor performance in an environmental application of phenol catalytic
wet oxidation is described. The activities of both the CuO-supported cataly
st and the extruded active carbon were compared. To avoid liquid maldistrib
ution, also the bed of catalyst particles with void fraction diluted by fin
e glass spheres was used. Under the conditions of the gas component transfe
r limitation, a better wetting of the catalyst can lead to the worse reacto
r performance due to lower reaction rates.