Catalytic activity of bimetallic AuPd alloys supported MgO and MnO2 nanostructures and their role in selective aerobic oxidation of alcohols

The use of metal oxides as supports for gold and palladium (Au-Pd) nanoalloys constitutes new horizons to improve new active catalysts in very important reactions. From the literatures, Pd-based bimetallic nanostructures have... [ view full abstract ]

The use of metal oxides as supports for gold and palladium (Au-Pd) nanoalloys constitutes new horizons to improve new active catalysts in very important reactions. From the literatures, Pd-based bimetallic nanostructures have great properties and active catalytic performance. In this study, nanostructures of Magnesium oxide (MgO) and nano Manganese dioxide (MnO₂) were synthesised and utilized as supports for Au-Pd nanoparticles catalysts. Gold and palladium were deposited on these supports using sol-immobilisation method. The MgO and MnO2 supported Au-Pd catalysts were evaluated for the oxidation of benzyl alcohol, aliphatic, aromatic alcohols and  1-octanol, respectively. This catalyst was found to be selective, active and reusable than the corresponding monometallic Au and Pd catalysts. The outcomes of this work shed light on the selective aerobic oxidation of alcohols using bimetallic Au-Pd nanoalloys and pave the way to a complete investigation of more basic metal oxides for various aliphatic alcohols