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Highly selective hydrogenation of phenol and derivatives over Pd catalysts supported on SiO2 and γ-Al2O3 in aqueous media

Paper ID Volume ID Publish Year Pages File Format Full-Text
50637 46806 2014 6 PDF Available
Title
Highly selective hydrogenation of phenol and derivatives over Pd catalysts supported on SiO2 and γ-Al2O3 in aqueous media
Abstract

•Pd/Al2O3 with 3 nm Pd particles was prepared by the reduction at 273 K.•It shows high activity and selectivity in phenol hydrogenation to cyclohexanone.•99% conversion and > 99% selectivity were achieved within 3 h in water.•Similar results are obtained in hydrogenation of phenol derivatives over Pd/Al2O3.•Phenol adsorbs through both interaction of hydroxyl and aromatic rings with Pd/Al2O3.

Pd/Al2O3 and Pd/SiO2 catalysts containing Pd nanoparticles in the size range of 3–13 nm were prepared and investigated in direct selective hydrogenation of phenol to cyclohexanone. Catalysts with 3 nm Pd nanoparticles present highly active and promoted the selective formation of cyclohexanone under atmospheric pressure of hydrogen in aqueous media without additives. Conversion of 99% and a selectivity higher than 99% were achieved within 3 h at 333 K. The generality of Pd/Al2O3 catalyst with 3 nm Pd nanoparticles for this reaction was demonstrated by selective hydrogenation of other hydroxylated aromatic compounds with similar performance.

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Keywords
PBAVWAKXLJRAMI-UHFFFAOYSA-NSelectivity hydrogenation; Phenol; Pd catalyst; Cyclohexanone
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Highly selective hydrogenation of phenol and derivatives over Pd catalysts supported on SiO2 and γ-Al2O3 in aqueous media
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 57, 5 December 2014, Pages 23–28
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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