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Thermally synthesized nanosized copper ferrites as catalysts for environment protection

Paper ID Volume ID Publish Year Pages File Format Full-Text
51163 46833 2010 5 PDF Available
Title
Thermally synthesized nanosized copper ferrites as catalysts for environment protection
Abstract

Nanosized copper ferrites were prepared by thermal method from the corresponding hydroxide carbonate precursors varying the temperature of synthesis. The phase composition of the obtained materials was characterized by XRD, Mössbauer spectroscopy, DSC and TPR analysis. Their catalytic properties were tested in total oxidation of toluene and methanol decomposition to CO and hydrogen. The relation between the synthesis parameters, phase composition of the samples and their transformation under the oxidation or reduction reaction medium was investigated in turns to understand the catalytic behavior of the obtained materials.

Graphical abstractThe catalytic behavior of the obtained ferrites depends not only on their initial phase composition, but on the phase transformations due to the influence of the reaction medium.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights►The phase composition of thermally synthesized copper ferrites depends on the annealing temperature, with a tendency to tetragonal structure formation over the cubic one at higher temperatures. ►Under the oxidation reaction atmosphere during the total oxidation of toluene, the catalytic activity of the samples decreases with the formation of tetragonal ferrite phase. ►Under the reduction reaction atmosphere during the methanol decomposition to CO and methane, complex phase transformation to Cu, CuO, magnetite and carbide, which reflects on the catalytic activity and selectivity, is observed.

Keywords
Copper ferrites; Thermal synthesis; Mössbauer spectroscopy; Methanol decomposition; Toluene oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 2, 15 November 2010, Pages 105–109
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
Online Support
Any Questions? feel free to contact us