文摘
A number of hydrotalcite (Mg8211;Al, Mn8211;Al, Co8211;Al, Ni8211;Al, Mg8211;Fe, Mg8211;Cr and Cu8211;Al) catalysts, with or without MnO4-1_{4}^{-1}-exchange, were evaluated for their performance in the solvent-free oxidation of benzaldehyde to benzoic acid by tert-butyl hydroperoxide under reflux in the absence of any solvent. The MnO4-1_{4}^{-1}-exchanged Mg8211;Al-hydrotalcite (Mg/Al = 10) showed high activity in the oxidation of different aromatic and aliphatic aldehydes to their corresponding acids and also showed excellent reusability in the oxidation process which is environmental-friendly.