Alkaline earth oxide supported nano-gold catalysts: influence of support, preparation method and calcination temperature of catalyst on its gold particle size and morphology

Choudhary, V, Jana, P and Bhargava, S 2009, 'Alkaline earth oxide supported nano-gold catalysts: influence of support, preparation method and calcination temperature of catalyst on its gold particle size and morphology', International Journal of Nanoparticles, vol. 2, no. 1-2, pp. 11-19.


Document type: Journal Article
Collection: Journal Articles

Title Alkaline earth oxide supported nano-gold catalysts: influence of support, preparation method and calcination temperature of catalyst on its gold particle size and morphology
Author(s) Choudhary, V
Jana, P
Bhargava, S
Year 2009
Journal name International Journal of Nanoparticles
Volume number 2
Issue number 1-2
Start page 11
End page 19
Total pages 9
Publisher Inderscience Enterprises
Abstract Influence of the metal oxide support, method of gold deposition and calcination temperature on the size and morphology of the nano-size gold particles deposited on alkaline earth metal oxides has been investigated. A number of alkaline earth oxide (viz. Mgo, CaO, SrO or BaO) supported nano-gold catalysts were prepared by depositing gold on the support by the deposition precipitation (DP) and homogeneous deposition precipitation (HDP) methods. The catalysts were calcined at different temperatures (400°C-900°C). The catalysts were characterised for their Au particles (size and morphology) using TEM/HRTEM. The catalytic activity of the supported nano-gold catalysts in the epoxidation of styrene to styrene oxide by tertiary butyl hydroperoxide could be correlated well with the Au loading and/or Au particle size of the catalysts.
Subject Catalysis and Mechanisms of Reactions
Keyword(s) alkaline earth oxides
metal oxides
nanogold catalysts
gold particle size
morphology
styrene epoxidation
styrene oxide
gold deposition
calcination
magnesium oxide
calcium oxide
barium oxide
nanoparticles
nanotechnology
Copyright notice © 2009 American Chemical Society
ISSN 1753-2507
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Created: Tue, 08 Jun 2010, 13:20:56 EST by Catalyst Administrator
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