Ru-Co-Al-hydrotalcites

Matsushita, T., Ebitani, K. and Kaneda, K. (1999). Highly efficient oxidation of alcohols and aromatic compounds catalysed by the Ru-Co-Al hydrotalcite in the presence of molecular oxygen. J. Chem. Soc., Chem. Common., 265. 

Heterogeneous catalysts such as Ru-Al-Mg-hydrotaldte, Ru-Co-Al-hydrotalcite, Ru-hydroxyapatite (RuHAP) (Eq. (7.40)) [91], RU-AI2O3 [92a,b], and Ru/A10(OH) [92c] are highly efficient catalysts for aerobic oxidation of alcohols. In these oxidation reactions, the key step is postulated as the reaction of Ru-H with O2 to form Ru-OO H, in analogy to Pd-OOH, which has been shown to operate in the palladium-catalyzed Wacker-type asymmetric oxidation reaction [93]. It is noteworthy that ruthenium on carbon is simple and efficient for the oxidation of alcohols (Eq. (7.41)) [92d]. 

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