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Low-temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2Cl3 precursor

Paper ID Volume ID Publish Year Pages File Format Full-Text
44333 46015 2007 11 PDF Available
Title
Low-temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2Cl3 precursor
Abstract

Many gold catalysts have been actively surveyed, but Au/SiO2 catalysts that are highly active for CO oxidation still remain evasive. In this work, gold nanoparticles well dispersed on Cab-O-Sil fumed SiO2 were prepared using Au(en)2Cl3 (en = ethylenediamine) as the precursor, and found to be very active for CO oxidation below 0 °C. The catalyst pretreatment via reduction and calcination, effect of gold loading, post-treatment in acidic and basic media, catalyst deactivation, storage, regeneration, and effect of surface modification by other metal oxides were explored. The results provide new perspective on the activation and promotion of active Au/SiO2-based catalysts.

Graphical abstractHighly dispersed gold nanoparticles on Cab-O-Sil fumed SiO2, which were prepared using Au(en)2Cl3 (en = ethylenediamine) as the precursor, were found to be highly active for CO oxidation below 0 °C. Effects of catalyst pretreatment, gold loading, post-treatment, catalyst deactivation, storage, regeneration, and surface coating of other metal oxides were systematically studied.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Gold catalysis; Nanoparticles; CO oxidation; Silica; Au(en)2Cl3
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Low-temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2Cl3 precursor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 326, Issue 1, 30 June 2007, Pages 89–99
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