Sub-2 nm gold clusters were prepared by adsorption of the [Au(en)₂]Cl₃ complex on the SBA-15 mesoporous silica surface and proper thermal treatment. It has been shown that pre-treatment in hydrogen at 400–600 °C allows stabilizing gold clusters on the support, preventing their sintering during further treatment in oxygen up to 600 °C. The high activity of the Au/SBA-15 catalyst in a low-temperature CO oxidation (~100% CO conversion at 25 °C), not typical for Au/SiO₂ systems, is attributed to the extremely small size of gold particles. The mechanism of stabilization of gold clusters on the SBA-15 support is also discussed.

通过在SBA-15介孔二氧化硅表面吸附[Au（en）₂ ] Cl ₃络合物并进行适当的热处理，制备了亚2 nm的金簇。研究表明，在400-600°C的氢气中进行预处理可以稳定载体上的金簇，从而防止在高达600°C的氧气中进行进一步处理时烧结它们。Au / SBA-15催化剂在低温CO氧化中的高活性（在25°C时〜100％CO转化率），对于Au / SiO ₂系统而言并不常见，这归因于金颗粒尺寸极小。还讨论了在SBA-15支架上稳定金簇的机理。