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Selective oxidation of benzyl alcohol under solvent-free condition with gold nanoparticles encapsulated in metal-organic framework

Paper ID Volume ID Publish Year Pages File Format Full-Text
39715 45832 2014 7 PDF Available
Title
Selective oxidation of benzyl alcohol under solvent-free condition with gold nanoparticles encapsulated in metal-organic framework
Abstract

•Highly dispersed Au NPs without deposition on the external surface or aggregation.•High activity and selectivity under solvent-free condition and atmospheric pressure.•Facilitated promotion effect of water due to the hydrophilic character of inner face.•Great stability and reusability of Au/UiO-66.

A metal organic framework encapsulated gold nanoparticles noted as Au/UiO-66 were developed through double solvents method. Highly dispersed Au nanoparticles were presented within the pores of metal-organic framework (MOF) UiO-66 without deposition of the nanoparticles on the external surface or aggregation. With benzyl alcohol as substrate, Au/UiO-66 exhibited excellent catalytic performance to afford benzaldehyde as the only product. The reactions which could be carried out under solvent-free conditions offered a green process with O2 of atmospheric pressure as oxidant. Water was proved to be beneficial for the reaction and the hydrophilic character of the MOF inner face facilitated its promotion effect greatly. The catalyst showed great stability and could be reused for at least eight times without obvious aggregation or leaching.

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Keywords
Metal-organic framework; Gold nanoparticles; Selective oxidation; Solvent-free and atmospheric conditions
First Page Preview
Selective oxidation of benzyl alcohol under solvent-free condition with gold nanoparticles encapsulated in metal-organic framework
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 477, 5 May 2014, Pages 125–131
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis