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Gold-catalyzed selective glucose oxidation at high glucose concentrations and oxygen partial pressures

Paper ID Volume ID Publish Year Pages File Format Full-Text
41226 45881 2011 5 PDF Available
Title
Gold-catalyzed selective glucose oxidation at high glucose concentrations and oxygen partial pressures
Abstract

The aqueous-phase glucose oxidation was studied at initial glucose concentrations of 1–57.5 wt% and oxygen partial pressures of 1.5–9 bar using a 0.3% Au/Al2O3 catalyst. The highest activity at 40 °C (about 5200 mmol min−1 gAu−1) was observed at an initial glucose concentration of 20 wt% and an oxygen pressure of 9 bar. The apparent activation energy was determined to 54 kJ mol−1. Kinetic analysis revealed that the reaction is likely to follow the Langmuir–Hinshelwood model. The catalyst possessed a high long-term stability in ten repeated batches at 20 wt% initial glucose concentration.

Graphical abstract.Figure optionsDownload full-size imageDownload high-quality image (168 K)Download as PowerPoint slideHighlights► Gold-catalyzed glucose oxidation at 1–57.5 wt% glucose and 1.5–9 bar oxygen. ► Apparent activation energy was determined to 54 KJ mol−1. ► Reaction is likely to follow the Langmuir–Hinshelwood model. ► High long-term stability in ten repeated batches at 20 wt% glucose and 9 bar oxygen.

Keywords
Gold catalyst; Glucose oxidation; Reaction order; Activation energy
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Gold-catalyzed selective glucose oxidation at high glucose concentrations and oxygen partial pressures
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 406, Issues 1–2, 18 October 2011, Pages 89–93
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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