Özet:

In this study, Al/Fe pillared sepiolite catalysts with different Fe/(Al+Fe) molar ratios were synthesized for catalytic wet peroxide oxidation (CWPO) of methyl orange azo dye. Furthermore, the catalysts were characterized by BET, XRD, XRF and SEM-EDX techniques. The catalysts were very efficient in the methyl orange oxidation reaction in diluted aqueous medium under mild experimental conditions (25°C and atmospheric pressure). 90.68% methyl orange elimination was achieved at 4 hours of reaction time under the conditions of 0.1 g/100 mL for catalyst dosage, 8% for active metal ratio, 500°C for calcination temperature, 3.7 for pH, 0.15 M for H2O2 concentration and 25°C for temperature. Meanwhile, low loss of Fe species was observed on all of the catalysts.

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