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Toward the decoration of Pt nanoparticles supported on carbon nanotubes with Fe oxides and its effect on the catalytic reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
40826 45867 2012 10 PDF Available
Title
Toward the decoration of Pt nanoparticles supported on carbon nanotubes with Fe oxides and its effect on the catalytic reaction
Abstract

Deposition of metallic oxides on noble metal catalysts improves their catalytic performance dramatically due to the highly active sites formed at the interface of two metals (nano-contact). In this work, Fe oxides were deposited on preformed Pt nanoparticles by using a novel microwave assisted polyol reduction method. The facile synthesis is performed in liquid phase at 438 K, which preserves the growth of large Pt nanoparticles and precludes the formation of Pt–Fe alloy. The Fe promoted Pt catalyst exhibited high activity (6340 h−1 in turnover frequency) and selectivity (89.1% for cinnamal alcohol) in the hydrogenation of cinnamaldehyde, which was attributed to the uniform distribution of Fe promoters on Pt surfaces. The characteristics of Fe oxides on Pt nanoparticles were identified by employing electrochemical analysis and X-ray photoelectron spectroscopy.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (210 K)Download as PowerPoint slideHighlights► Two-step microwave method is effective in making bimetallic catalysts. ► Ultra-fine FeOx particles can be deposited on preformed Pt nanoparticles. ► Promoted Pt catalysts show excellent activity in hydrogenation of aldehyde. ► The activity was attributed to the unique contact mode between Pt and FeOx.

Keywords
FeOx decorated Pt catalyst; Electrochemical measurement; Microwave assisted polyol reduction; Selective hydrogenation; Cinnamaldehyde
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 435–436, 5 September 2012, Pages 131–140
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