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Selective phenol hydrogenation in aqueous phase on Pd-based catalysts supported on hybrid TiO2-carbon materials

Paper ID Volume ID Publish Year Pages File Format Full-Text
41388 45887 2011 10 PDF Available
Title
Selective phenol hydrogenation in aqueous phase on Pd-based catalysts supported on hybrid TiO2-carbon materials
Abstract

TiO2-C materials have been prepared by solvothermal and slurry synthesis and the influence of carbon properties upon the catalytic activity and selectivity of Pd-based catalysts on phenol hydrogenation in aqueous phase under mild reaction conditions has been studied. The nature of the catalysts can be modified to direct the reaction either to cyclohexanol (∼100% yield) or to cyclohexanone (∼96% yield). High selectivity to cyclohexanone is obtained with Pd on more polar TiO2-C supports, while when these are transformed into hydrophobic TiO2-C supports the resultant catalyst becomes selective to cyclohexanol. Thus, product distribution during the selective phenol hydrogenation in aqueous phase is easily controlled by controlling the functionalization of the hybrid support.

Graphical abstractPhenol hydrogenation. (A) General reaction steps. (B) General pathway for selective hydrogenation of phenol to cyclohexanone.Figure optionsDownload full-size imageDownload high-quality image (86 K)Download as PowerPoint slideHighlights► Selective phenol hydrogenation under green chemistry conditions. ► Pd-based catalysts supported on hybrid TiO2-carbon materials. ► High selectivity to cyclohexanone with Pd on polar TiO2-C supports. ► High selectivity to cyclohexanol with Pd on non-polar TiO2-C supports. ► Control of the functionalization of the hybrid support.

Keywords
Phenol hydrogenation; Selectivity; Pd-based catalysts; Hybrid TiO2-C
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Selective phenol hydrogenation in aqueous phase on Pd-based catalysts supported on hybrid TiO2-carbon materials
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 404, Issues 1–2, 19 September 2011, Pages 103–112
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