SYNTHESIS AND CHARACTERIZATION OF Al/Fe PILLARED SEPIOLITE FOR CWPO OF METHYL ORANGE

Year 2017, Issue: 1, 131 - 138, 09.11.2017

İlker Kipcak Esin Kalpazan

Abstract

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.

Keywords

Azo dye methyl orange , catalytic wet peroxide oxidation , pillared clays , sepiolite

References

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