Journal
CATALYSIS COMMUNICATIONS
Volume 44, Issue -, Pages 50-53Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2013.10.004
Keywords
Gold nanopartides; Colloid immobilization; Epoxidation; Mesostructured silica
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Funding
- Spanish MICINN [CTQ2011-28954-C02-01(02]
- FPI Program [BES-2006-13056]
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Colloidal gold nanoparticles were synthesized by different procedures affording suspensions with two different mean sizes (2 and 5 nm). Au catalysts were prepared by sol immobilization onto several silica frameworks with different 2D and 3D mesoporosities. The catalysts were tested in styrene oxidation reactions showing excellent efficiency and selectivity. The effect of nanoparticle size and mesoporous framework on the physical and catalytic properties of the final materials was studied. The most selective catalyst was prepared from the 5 nm Au nanopartides and the more interconnected silica framework (3D mesoporosity). (C) 2013 Elsevier B.V. All rights reserved.
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