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Silica-supported Au–Cu alloy nanoparticles as an efficient catalyst for selective oxidation of alcohols

Paper ID Volume ID Publish Year Pages File Format Full-Text
40882 45869 2012 6 PDF Available
Title
Silica-supported Au–Cu alloy nanoparticles as an efficient catalyst for selective oxidation of alcohols
Abstract

Silica-supported Au–Cu and Au–Ag alloy nanoparticles were synthesized, characterized, and tested for the aerobic oxidation of alcohols. The results showed that Au–Cu alloy catalyst exhibited good activity and selectivity to aldehydes for a variety of structurally diverse alcohols and a strong synergistic effect was found between Au and Cu. In contrast, Au–Ag alloy catalysts were less active and selective for the oxidation of alcohols although they have very similar particle sizes to the Au–Cu alloy catalysts. Besides the chemical compositions, the pretreatment conditions were found to affect significantly the catalytic performances, and the reduction treatment is necessary for obtaining a high activity and selectivity, suggesting Au–Cu alloy is the active phase. Moreover, the catalyst could be reused if only the catalyst after the reaction was subjected to reduction treatment.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (127 K)Download as PowerPoint slideHighlights► Au–Cu/SiO2 catalysts are highly active and selective for oxidation of alcohols. ► There is a strong synergistic effect between Au and Cu. ► Reduction pretreatment is necessary for a good performance.

Keywords
Gold; Copper; Au–Cu; Au–Ag; Synergetic effect; Alcohol oxidation
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Silica-supported Au–Cu alloy nanoparticles as an efficient catalyst for selective oxidation of alcohols
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 433–434, 8 August 2012, Pages 146–151
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