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Effect of particle size on selective hydrogenation of cinnamaldehyde by Pt encapsulated in mesoporous silica

Paper ID Volume ID Publish Year Pages File Format Full-Text
51227 46836 2012 5 PDF Available
Title
Effect of particle size on selective hydrogenation of cinnamaldehyde by Pt encapsulated in mesoporous silica
Abstract

Pt nanoparticles of various sizes, viz. 8, 4.9, 3.6 and 1.8 nm were encapsulated in 2D hexagonal mesoporous silica by in-situ synthesis as well as post synthetic modifications so that the final catalyst composition was ≤ 1 wt.% Pt/SiO2. A kinetic analysis of the effect of particle size on selective hydrogenation of cinnamaldehyde was carried out on these catalysts. It was found that the materials, even at such low loading of Pt, were very active for the hydrogenation and selective for the desired product, cinnamyl alcohol. Among the different particle sizes, selectivity was found to be the highest on 8 nm particles. Kinetic analysis shows that the reaction follows a consecutive reaction pathway.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Pt nanoparticles of varying sizes isolated exclusively inside channels of mesoporous silica. ► Cinnamaldehyde hydrogenation studied in catalysts with 1.8, 3.6, 4.9 and 8 nm Pt particles. ► Phenylpropanol formation more sensitive to particle size compared to that of other products.

Keywords
Cinnamaldehyde hydrogenation; Selective hydrogenation; α,β-Unsaturated aldehydes; Mesoporous silica; Pt nanoparticles; Kinetic analysis
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Effect of particle size on selective hydrogenation of cinnamaldehyde by Pt encapsulated in mesoporous silica
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 28, 5 November 2012, Pages 42–46
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Online Support
Any Questions? feel free to contact us