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Effect of Fe and Ce on Al-pillared bentonite and their performance in catalytic oxidation reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
44463 46030 2007 9 PDF Available
Title
Effect of Fe and Ce on Al-pillared bentonite and their performance in catalytic oxidation reactions
Abstract

A Colombian bentonite was modified by intercalation with polyhydroxocationic solutions of Al3+ containing Fe3+ and Ce3+. Addition of these solutions led to the formation of pillared clays with important catalytic properties in three environmental impact reactions: phenol oxidation in diluted aqueous medium, oxidation of CO and 2-propanol oxidation in gas phase. The catalytic tests revealed the activity of the introduced iron species and the promoter effect of the cerium on the catalytic activity of these species. X-ray diffraction and the transmission electron microscopy results indicated, respectively, the formation of oxide nanoparticles inside and outside of the interlayer spaces of the clay mineral structure. Mössbauer spectroscopy analysis revealed the presence of iron oxides with oxidation state +3 and hematite structure on the solids.

Graphical abstractA bentonite modified with solutions of Al3+ containing Fe3+ and Ce3+ was obtained with important catalytic properties in three environmental impact reactions. XRD and TEM results indicated the formation of oxide nanoparticles inside and outside of the interlayer spaces of the clay. Mössbauer spectroscopy revealed the presence of iron oxides with oxidation state +3 and hematite structure on the solids. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Pillared clay; CWPO reaction; CO oxidation; VOCs oxidation; Environmental catalysis
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Effect of Fe and Ce on Al-pillared bentonite and their performance in catalytic oxidation reactions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 317, Issue 1, 27 January 2007, Pages 120–128
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
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Full-text PDF Download
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Any Questions? feel free to contact us