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A novel ceria–activated carbon composite for the catalytic ozonation of carboxylic acids

Paper ID Volume ID Publish Year Pages File Format Full-Text
53021 46896 2008 6 PDF Available
Title
A novel ceria–activated carbon composite for the catalytic ozonation of carboxylic acids
Abstract

Ceria (Ce–O) and a novel ceria–activated carbon composite (AC0–Ce–O) were prepared and tested as catalysts in the ozonation of two selected carboxylic acids, oxalic acid and oxamic acid, at acid pH. Ce–O showed an interesting catalytic effect, especially in the ozonation of oxalic acid. A strong synergic effect was observed for the AC0–Ce–O composite in the case of oxalic acid, leading to the best results in the mineralization of this compound. Both materials enhanced the removal of oxamic acid relatively to single ozonation. The Ce–O catalytic ozonation was shown to comprise bulk oxidation reactions occurring via HO radicals. In the case of the composite, both surface and bulk reactions are supposed to occur. Some considerations about the mechanisms are presented.

Keywords
Catalytic ozonation; Activated carbon; Cerium oxide; Carboxylic acids; Oxamic acid; Oxalic acid
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A novel ceria–activated carbon composite for the catalytic ozonation of carboxylic acids
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issues 11–12, 30 June 2008, Pages 2121–2126
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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