Dispersed Ru Nanoclusters Transformed from A Grafted Trinuclear Ru Complex on SiO2 for Selective Alcohol Oxidation
Dispersed Ru Nanoclusters Transformed from A Grafted Trinuclear Ru Complex on SiO2 for Selective Alcohol Oxidation
复制标题
SiO2 上接枝三核钌配合物转化为分散的钌纳米团簇，用于选择性醇氧化
DOI：
10.1039/c3dt51142a
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发表时间：
2013
影响因子：
4
通讯作者：
Mizuki Tada
中科院分区：
文献类型：
--
作者：
Satoshi Muratsugu;Min Hwee Lim;Takahiro Itoh;Wipavee Thumrongpatanaraks;Mio Kondo;Shigeyuki Masaoka;T. S. Andy Hor;Mizuki Tada
通过将Ru 3簇Ru 3 O（CH 3COO）6（H2O）3·（CH 3COO）接枝到吡啶功能化的SiO2表面，成功地制备了平均直径为1.3 ± 0.3 nm的Ru纳米簇.分散在SiO2表面上的吡啶部分扩展了Ru 3簇，控制其表面密度，并且Ru簇的纳米簇化在表面上进行。通过元素分析、热重分析、FT-IR、UV/维斯和固态NMR光谱、BET分析、X射线光电子能谱、X射线衍射、透射电子显微镜和Ru K边X射线吸收精细结构分析对Ru纳米团簇的结构进行了表征。结果表明，Ru纳米簇的分散性和结构对O2选择性氧化醇制醛反应的催化活性有很大的影响，Ru纳米簇对多种醇的选择性氧化反应具有良好的催化活性.
Ru nanoclusters (average diameter = 1.3 ± 0.3 nm) were successfully prepared by using a Ru3 cluster Ru3O(CH3COO)6(H2O)3·(CH3COO) grafted on a pyridine-functionalized SiO2 surface. The pyridine moiety dispersed on the SiO2 surface spread the Ru3 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.