Universite de Lyon, Institut de Chimie de Lyon, C2P2-LCOMS UMR 5265 (CNRS - CPE - Universite Lyon 1), ESCPE Lyon, 43, Bd. du 11 Novembre, F-69616 Villeurbanne, France.
J Am Chem Soc. 2009 Oct 21;131(41):14667-9. doi: 10.1021/ja903730q.
Well-defined and perfectly dispersed [( identical withSiO)Au(I)] surface species supported on silica have been obtained via surface organometallic chemistry and transformed upon mild reduction (H(2), 300 degrees C) into small (1.8 +/- 0.6 nm) Au particles supported on silica passivated with SiMe(3) functionalities. Improved performance in liquid-phase aerobic epoxidation has been achieved, and the intrinsic activity of gold in oxidation is revealed.
通过表面有机金属化学合成，得到了在二氧化硅上负载的具有明确边界和完美分散的[(与 SiO 相同的)Au(I)]表面物种，并在温和还原条件下（H2，300°C）转化为负载在二氧化硅上的小（1.8±0.6nm）金颗粒，这些金颗粒表面被 SiMe3 官能团钝化。在液相有氧氧化反应中实现了性能的提升，同时揭示了金在氧化反应中的固有活性。
