Cu(5%)/Al2O3 catalytic performance on the phenol wet oxidation with H2O2: Influence of the calcination temperature
- Devard, Alejandra Veronica
- Brussino, Paula
- Marchesini, Fernanda Albana
- Ulla, Maria Alicia del H.
DOIAbstract
In this work the catalytic performance of Cu(5%)/Al2O3 catalysts prepared by wet impregnation and calcined at three different temperatures, 400 ºC (WI 400), 650 ºC (WI 650) and 900 ºC (WI 900), was analyzed. These materials were tested in the phenol wet oxidation reaction using H2O2 (0.22 or 0.88 M) as an oxidizing agent, 1000 mg/L of phenol at 70 °C and atmospheric pressure. A complete conversion of phenol and a high extent of phenol mineralization were obtained for the three catalysts. Surface Cu2+ species suffered a reduction process during the catalytic reaction due to the drop of the pH value and a fraction of the reduced copper was leached to the liquid phase. Despite this, the increment in the calcination temperature produced a decre...
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