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Title: Dispersed Ru nanoclusters transformed from a grafted trinuclear Ru complex on SiO2 for selective alcohol oxidation
Authors: Muratsugu, S.
Lim, M.H.
Itoh, T.
Thumrongpatanaraks, W.
Kondo, M.
Masaoka, S.
Andy Hor, T.S. 
Tada, M.
Issue Date: 21-Sep-2013
Citation: Muratsugu, S., Lim, M.H., Itoh, T., Thumrongpatanaraks, W., Kondo, M., Masaoka, S., Andy Hor, T.S., Tada, M. (2013-09-21). Dispersed Ru nanoclusters transformed from a grafted trinuclear Ru complex on SiO2 for selective alcohol oxidation. Dalton Transactions 42 (35) : 12611-12619. ScholarBank@NUS Repository.
Abstract: Ru nanoclusters (average diameter = 1.3 ± 0.3 nm) were successfully prepared by using a Ru3 cluster Ru3O(CH 3COO)6(H2O)3·(CH 3COO) grafted on a pyridine-functionalized SiO2 surface. The pyridine moiety dispersed on the SiO2 surface spread the Ru 3 cluster, controlling its surface density, and the nanoclusterization of the Ru cluster proceeded on the surface. The structures of the Ru nanoclusters were characterized by means of elemental analysis; thermogravimetric analysis; FT-IR, UV/vis, and solid-state NMR spectroscopy; BET analysis; X-ray photoelectron spectroscopy; X-ray diffraction; transmission electron microscopy; and Ru K-edge X-ray absorption fine structure analysis. It was found that the catalytic activity for the selective oxidation of alcohol to the corresponding aldehyde using O2 highly depended on the dispersion and structures of the Ru particles, and the Ru nanocluster was found to be efficient in the selective oxidation of a variety of alcohols. © 2013 The Royal Society of Chemistry.
Source Title: Dalton Transactions
ISSN: 14779226
DOI: 10.1039/c3dt51142a
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