2006•Journal of Chemical Industry and EngineeringRequires access
Preparation and activity of Fe_2O_3-CeO_2/γ-Al_2O_3 catalyst for catalytic wet peroxide oxidation of dye wastewater
Dezhi Sun
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Abstract
A Fe_2O_3-CeO_2/γ-Al_2O_3 catalyst was prepared by the successive impregnating procedure, and the preparation parameters were optimized.BET, X-ray photoelectron spectroscopy (XPS) and X-ray fluorescence spectroscopy (XRF) techniques were performed to characterize the Fe_2O_3-CeO_2/γ-Al_2O_3 catalyst.The catalytic activity of the prepared catalyst was investigated by catalytic wet peroxide oxidation (CWPO)of azo dyes at room temperature (25℃) and atmospheric pressure.The results showed that Fe_2O_3-CeO_2/γ-Al_2O_3 catalyst had excellent catalytic activity.For artificial wastewater of methyl orange (dye concentration 500 mg·L~ -1 ), it was possible to remove 88.77% of color, 89.54% of COD and 81.44% of TOC after 3 h of oxidation at 30 g·L~ -1 Fe_2O_3-CeO_2/γ-Al_2O_3 and 330 mg·L~ -1 H_2O_2.