Please use this identifier to cite or link to this item: https://doi.org/10.1039/c0cy00025f
Title: Selective oxidation of cyclohexane over gold nanoparticles supported on mesoporous silica prepared in the presence of thioether functionality
Authors: Wu, P.
Xiong, Z.
Loh, K.P. 
Zhao, X.S. 
Issue Date: May-2011
Citation: Wu, P., Xiong, Z., Loh, K.P., Zhao, X.S. (2011-05). Selective oxidation of cyclohexane over gold nanoparticles supported on mesoporous silica prepared in the presence of thioether functionality. Catalysis Science and Technology 1 (2) : 285-294. ScholarBank@NUS Repository. https://doi.org/10.1039/c0cy00025f
Abstract: Gold (Au) nanoparticles (NPs) supported on mesoporous silica were prepared using a one-pot synthesis method in the presence of thioether functionality -(CH2)3-S-S-S-S-(CH2)3. Bis(triethoxysilyl) propane tetrasulfide was used as the source of thioether functionality. The complexation of thioether groups with tetrachloroauric anion (AuCl4 -) led to a good dispersion of Au NPs on mesoporous silica. Removal of the template and the thioether functional groups by calcination resulted in the reduction of the Au species, leaving behind Au NPs well dispersed on mesoporous silica. Selective oxidation of cyclohexane with molecular oxygen was used to evaluate the catalytic properties of the Au NP catalysts prepared using the present method and compared with that of a Au catalyst prepared using the hydrogen reduction method. © 2011 The Royal Society of Chemistry.
Source Title: Catalysis Science and Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/90095
ISSN: 20444753
DOI: 10.1039/c0cy00025f
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