Resumo

MASSA, Paola; DAFINOV, Antón; FENOGLIO, Rosa  e  MEDINA CABELLO, Francisco. Catalytic degradation of phenol with hydrogen peroxide: Heterogeneous Fenton-Like systems. Rev. Soc. Quím. Perú [online]. 2009, vol.75, n.2, pp.194-200. ISSN 1810-634X.

Fe₂O₃/CeO₂ catalysts were synthesized with different Fe loading (5-20%), using a simple combustion preparation method. The samples were calcined at several temperatures (400-900°C), and tested in a batch reactor at atmospheric pressure, in a temperature range of 60°C-100°C, for 4 hours. The effect of different H₂O₂/phenol ratios was also studied. Fresh and used samples were characterized by Scanning Electronic Microscopy, Temperature Prograrnmed Reduction, X-ray Diffraction and Surface Area Measurements (BET Method). The catalysts presented considerable phenol conversion and selectivity levels, at the operation conditions. Higher phenol conversions were reached with increasing iron content of the catalytic system; however, higher Fe lixiviation levels were also detected. A reduction in the phenol conversion and, more significantly, in the selectivity towards final products was observed when samples calcined at high temperatures were used.

Palavras-chave : Pbenol oxidation; CWPO; Fe₂O₃/CeO₂.

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