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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents



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ID: 434989.0, Fritz-Haber-Institut / Inorganic Chemistry
Gold sols as catalyst in the glycerol oxidation: the role of stabilizer
Authors:Villa, Alberto; Wang, Di; Su, Dang Sheng; Prati, Laura
Language:English
Research Context:Carbon
Date of Publication (YYYY-MM-DD):2009-10-04
Title of Journal:ChemCatChem
Volume:1
Issue / Number:4
Start Page:510
End Page:514
Copyright:© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Polyvinylalcohol (PVA), tetrakis hydroxypropyl phosphonium chloride (THPC) and citrate-stabilized gold nanoparticles (AuNPs) have been synthesized and tested in the liquid phase oxidation of glycerol. THPC stabilized gold NPs have been found to exhibit remarkable catalytic activity (TOF 2478 h-1) in comparison to PVA and citrate ones (TOF respectively of 715 and 160 h-1). The catalytic results can be explained in terms of particle size but aging treatment revealed also the influence of the protective agent. PVA as stabilizer produced small and quite stable gold nanoparticles differently from the THPC system. However PVA also limits the accessibility of reactant to the active sitemight be of interest for some carbohydrate conversion reactions where strong basic sites are required but for which the pH of the solution should remain mild in order to avoid the degradation of the reactants and/or products
Free Keywords:gold; colloids; glycerol oxidation; unsupported nanoparticles
External Publication Status:published
Document Type:Article
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Micro- and Nanostructure / Carbon
External Affiliations:Dipartimento di Chimica Inorganica Metallorganica e Analitica e ISTM, Centre of Excellence CIMAINA UniVersita` di Milano, Via Venezian 21, I-20133 Milano, Italy
Identifiers:URL:http://dx.doi.org/10.1002/cctc.200900118 [only for subscriber]
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