fulltext.study @t Gmail

Highly dispersed ceria on activated carbon for the catalyzed ozonation of organic pollutants

Paper ID Volume ID Publish Year Pages File Format Full-Text
46709 46445 2012 10 PDF Available
Title
Highly dispersed ceria on activated carbon for the catalyzed ozonation of organic pollutants
Abstract

Several catalysts of cerium oxide highly dispersed on activated carbon were prepared varying the cerium precursor, the solvent and the chemical surface properties of the support, and characterized by several techniques. Afterwards, these materials were investigated as ozonation catalysts for the mineralization of two organic compounds (oxalic acid and aniline). The ozonation results were compared with those obtained in the absence of catalyst and in the presence of the parent activated carbons used for the preparation of these materials. The prepared catalysts have better performances than the parent activated carbons, denoting a clear synergic effect between activated carbon and cerium oxide. The efficiency of the catalysts is mainly affected by the amount of Ce3+ species on the surface. However, in the ozonation of oxalic acid, the specific surface area and metal oxide particle diameter also played an important role. The use of activated carbon as support favors the removal of both organic compounds studied. Highly dispersed cerium oxide on activated carbon shows better catalytic performance than a composite with the same composition.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Several catalysts of ceria highly dispersed on activated carbon (AC) were prepared. ► Oxalic acid removal is favored by catalysts prepared from a “Ce(IV)” precursor. ► “Ce(III)” precursor favors the mineralization of aniline. ► Surface reactions are predominant over liquid bulk reactions involving HO radicals. ► Highly dispersed CeO2 on AC catalysts present better performance than a CeO2–AC composite.

Keywords
Catalytic ozonation; Cerium oxide; Activated carbon; Oxalic acid; Aniline
First Page Preview
Highly dispersed ceria on activated carbon for the catalyzed ozonation of organic pollutants
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
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 113–114, 22 February 2012, Pages 308–317
Authors
, , , , , , ,
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
Online Support
Any Questions? feel free to contact us