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Small gold particles supported on MgFe2O4 nanocrystals as novel catalyst for CO oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
41911 45904 2010 7 PDF Available
Title
Small gold particles supported on MgFe2O4 nanocrystals as novel catalyst for CO oxidation
Abstract

We present the study on the catalytic performance of gold particles supported on spinel type MgFe2O4 nanocrystals (Au/MgFe2O4) which exhibit high activity for low temperature CO oxidation. Using XRD, TEM, XPS and CO titration techniques, we investigated the effect of the pretreatment atmosphere on the structure and catalytic properties of the Au/MgFe2O4 catalyst in CO oxidation. TEM, XPS and XRD showed that the pretreatment atmosphere had a negligible effect on the particle size distribution, chemical states of the gold, and the structure of the support. Among the various pretreated catalysts, O2-Au/MgFe2O4 exhibits superior activity, indicating that pretreatment in oxidative atmosphere induced the high capability of the catalyst to activate CO and supply active oxygen for CO oxidation as confirmed by CO titration experiments.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (109 K)Download as PowerPoint slideResearch highlights▶ We present the study on the catalytic performance of the gold catalysts with complex oxide of MgFe2O4 as support which exhibits high activity for low temperature CO oxidation. ▶ Using various techniques, we studied the effect of different pretreatments on the structure of the catalyst, the metal–support interaction and the resulting activities for CO oxidation. ▶ The application of complex oxide of MgFe2O4 as supports may open up a new route in search for highly active gold catalyst for CO oxidation.

Keywords
Supported gold catalyst; MgFe2O4; CO oxidation; Pretreatment atmosphere; Active oxygen
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Small gold particles supported on MgFe2O4 nanocrystals as novel catalyst for CO oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 386, Issues 1–2, 30 September 2010, Pages 94–100
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