VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • MnS-1 as a selective catalyst for the solvent-free oxidation of alkyl aromatics to aromatic ketones with molecular oxygen [Elektronski vir]
    Cecowski, Saša ...
    Porous silicates are used as catalytic supports in chemical reactions. Incorporation of transition metals into their framework generates catalytically active sites. In recent years, manganese ... (III)-containing porous catalysts have received considerable attention as catalysts for the selective oxidation of hydrocarbons using molecular oxygen (air) as the oxidant. In order to obtain environmentally benign catalyst, this is an important feature together with the mild and solvent-free conditions in the liquid phase. Among the attractive conversions is the selective oxidation of alkyl aromatics in benzylic position to the corresponding aromatic ketones. The synthesis of these ketones via Friedel-Crafts acylation of aromatics or conversion of aromatics with stoichiometric oxidants like KMnO4 leads to the formation of hazardous waste in large amounts. Therefore, the use of solid catalysts which are selective, use molecular oxygen as the terminal oxidant and allow application of solvent-free conditions would provide an environmentally friendly and economically attractive alternative. Here, we report, for the first time, on the successful direct oxidation of alkyl aromatics in benzylic position to the corresponding aromatic ketones by molecular oxygen in the presence of microporous Mn silicalite-1 (MnS-1).
    Vrsta gradiva - prispevek na konferenci
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 4749338