Highly dispersed gold nanoparticles supported on Cu-doped spinel oxides were prepared by a simple deposition-precipitation method. The results indicate that Au/MgCuCr₂O₄ catalyst is very efficient for gas-phase oxidation of cyclohexanol to cyclohexanone, giving 69.5% and 86.4% yield of cyclohexanone at 260 °C and 300 °C, respectively. Deactivation was not observed in a 100 h stability test. This excellent performance can be correlated with the highly stable gold nanoparticles in the reaction deriving from the strong gold-support interaction and efficient AuCu synergy.

中文翻译：

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高活性和稳定的尖晶石氧化物负载型金催化剂，用于将环己醇气相选择性好氧氧化为环己酮

通过简单的沉积-沉淀方法制备了负载在掺杂铜的尖晶石氧化物上的高度分散的金纳米颗粒。结果表明，Au / MgCuCr ₂ O ₄催化剂对于将环己醇气相氧化为环己酮非常有效，在260°C和300°C下的产率分别为69.5％和86.4％。在100小时的稳定性测试中未观察到失活。这种出色的性能可以与由稳定的金-载体相互作用和有效的Au Cu协同作用产生的高度稳定的金纳米颗粒进行反应。