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Aerobic oxidation of glucose and 1-phenylethanol over gold nanoparticles directly deposited on ion-exchange resins

Paper ID Volume ID Publish Year Pages File Format Full-Text
42947 45948 2009 6 PDF Available
Title
Aerobic oxidation of glucose and 1-phenylethanol over gold nanoparticles directly deposited on ion-exchange resins
Abstract

Gold nanoparticles (Au NPs) were deposited directly onto ion-exchange resins by reducing HAuCl4 or Au(en)2Cl3 (en = ethylenediamine) with NaBH4 or with surface amine and ammonium groups in anion-exchange resins. Catalytic activity for the oxidation of glucose and of 1-phenylethanol with molecular oxygen was more greatly influenced by the nature of polymer supports than by the size of Au NPs and increased in the order of the basicity of ion-exchange resins. Strongly basic anion-exchange resins such as quaternary ammonium salt (–N+Me3) functionalized resin exhibited a TOF (the reaction rate per loaded Au) as high as 27,000 h−1 (7.5 s−1) for glucose oxidation at 60 °C and at pH 9.5. For 1-phenylethanol under base-free conditions, a TOF of 60 h−1 was obtained at 60 °C, indicating that anion-exchange resins worked as solid bases.

Graphical abstractGold nanoparticles were deposited directly onto ion-exchange resins by reducing HAuCl4 or Au(en)2Cl3, exclusively on the resin surfaces. Gold nanoparticles deposited on a strongly basic anion-exchange resin exhibited high catalytic activity for glucose oxidation with a TOF as high as 27,000 h−1 at 60 °C and at pH 9.5.Anion-exchange resin supported Au nanoparticles also catalyzed the oxidation of 1-phenylethanol under base-free conditions.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Gold nanoparticles; Gold catalyst; Ion-exchange resin; Glucose oxidation; Alcohol oxidation
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Aerobic oxidation of glucose and 1-phenylethanol over gold nanoparticles directly deposited on ion-exchange resins
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 353, Issue 2, 1 February 2009, Pages 243–248
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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
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Any Questions? feel free to contact us