| 초록 |
Wet air oxidation is the liquid phase oxidation of organics to the desired end products, CO2 and H2O, at high temperatures (125~320℃) and pressures (0.5~20MPa) using gaseous source of oxygen (usually air) as oxidant. Proper catalysts should be developed for the wet air oxidation, in order to moderate the reaction conditions and to change the reaction pathway to the environmentally benign end product. In this study, the wet air oxidation of phenol over the TiO2-supported metal catalysts were investigated for this purpose. The noble metal catalysts on TiO2 with 1 wt% and the transition metal oxide catalysts on TiO2 with 5 wt% loading of each metal were prepared by incipient wetness impregnation method. Their activity for wet air oxidation of phenol was investigated in a batch reactor (150℃, 5.05MPa). The phenol concentration and the TOC concentration of each sample were examined using a HPLC system and TOC analyzer. The catalysts were characterized by N2 adsorption, XRD, TPO, and TPR experiments. |
