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Preparing Au/ZnO by precipitation–deposition technique

Paper ID Volume ID Publish Year Pages File Format Full-Text
43067 45953 2008 7 PDF Available
Title
Preparing Au/ZnO by precipitation–deposition technique
Abstract

This report presents results related to the preparation of Au/ZnO using the deposition–precipitation technique. Many samples were synthesized taking into account different pH values, gold concentration, procedures and contact times between the gold precursor and support. The exposure of gold compounds to radiation in the visible range was also examined during the preparation. These syntheses show that precipitation–deposition is, in this case, an ionic exchange. It could be observed that exposure to light and competition among anions change the gold content of the catalyst. Therefore, these are important parameters in the preparation of gold catalyst by ionic exchange. The results also show that by using this technique it is possible to prepare active catalysts for the preferential oxidation of carbon monoxide (PROX) reaction.

Graphical abstractThis report presents results related to the Au/ZnO preparation by precipitation–deposition, which is in this case an ionic exchange. As exposure to light and competition among anions change the gold content they are important parameters in Au/ZnO synthesis. These results show that using this technique it is possible to prepare active catalysts for preferential oxidation of carbon monoxide (PROX) reaction.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Gold; Zinc; Precipitation–deposition; Ionic exchange
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 340, Issue 1, 15 May 2008, Pages 133–139
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