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Catalytic property of Fe-Al pillared clay for Fenton oxidation of phenol by H2O2

Paper ID Volume ID Publish Year Pages File Format Full-Text
48098 46492 2009 6 PDF Available
Title
Catalytic property of Fe-Al pillared clay for Fenton oxidation of phenol by H2O2
Abstract

Clay pillared with Fe-Al was synthesized as a catalyst for Fenton oxidation of phenol by hydrogen peroxide (H2O2). The pillaring process altered the basal space of clay, which is related to the amounts of aluminium and iron in the pillaring solution. The catalytic activity of the pillared clay was attributed to the accessible iron species, whose amount is regulated not only by the introduced iron species but also by the basal space that subsequently depends on the introduced aluminium species. The heterogeneous Fenton reaction exhibited an induction period followed by an apparent first order oxidation of phenol by H2O2. The induction period was proposed as an activation process of the surface iron species, which is thus enabled to complex with the reactants. The induction time (tI) depended on temperature (T) and pH condition but irrelevant to the concentrations of phenol and H2O2 and the amount of catalyst. The rate of the oxidation process was evaluated with respect to the concentrations of phenol and H2O2, the amount of catalyst, pH and temperatures. During the catalytic reaction the trend of iron leaching showed an ascending period and a descending period, which was related to the presence of ferrous ions and ferric ions. The Fe-Al pillared was recovered through two procedures, dry powder and slurry, which have different effect on the induction period.

Keywords
Phenol; Hydrogen peroxide; Clay; Fenton reaction; Heterogeneous catalysis
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Catalytic property of Fe-Al pillared clay for Fenton oxidation of phenol by H2O2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 85, Issues 3–4, 12 January 2009, Pages 201–206
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us