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Selective hydrogenation of benzaldehyde to benzyl alcohol over Au/Al2O3

Paper ID Volume ID Publish Year Pages File Format Full-Text
51582 46847 2011 6 PDF Available
Title
Selective hydrogenation of benzaldehyde to benzyl alcohol over Au/Al2O3
Abstract

We provide the first evidence of exclusive benzyl alcohol production in the continuous gas phase hydrogenation of benzaldehyde (T = 393 K; P = 1 atm) over Au/Al2O3, where activity was largely maintained for up to 15 h on-stream. XRD and DRS UV–vis have established the presence of metallic Au post temperature programmed reduction to 473 K, with a surface area weighted mean Au particle size (from TEM analysis) of 7.9 nm. Under the same reaction conditions, Ni/Al2O3 and Pd/Al2O3 were non-selective, generating toluene as the principal product via hydrogenolysis of benzaldehyde and exhibiting an appreciable temporal loss of activity. The results establish Au/Al2O3 as a promising catalyst for the production of benzyl alcohol.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► First evidence of exclusive benzyl alcohol production via continuous gas phase benzaldehyde hydrogenation over Au. ► 100% selectivity to benzyl alcohol over Au/Al2O3 under conditions where Ni/Al2O3 and Pd/Al2O3 promote toluene formation. ► Selective hydrogenation maintained over Au/Al2O3 with time on-stream but temporal loss of activity exhibited by Ni/Al2O3 and Pd/Al2O3.

Keywords
Benzaldehyde; gas phase hydrogenation; benzyl alcohol; Au/alumina
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Selective hydrogenation of benzaldehyde to benzyl alcohol over Au/Al2O3
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 16, Issue 1, 30 November 2011, Pages 159–164
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