Gif-KRICT biomimetic oxidation of cyclohexane: The influence of metal oxides

Various metal oxides such as Fe2O3, FeO, TiO2, MnO2, MoO3, WO3 and ZnO have been used as a catalyst for Gif-KRICT type cyclohexane oxidation. In this reaction, the conversion of cyclohexane to cyclohexanone and cyclohexanol a nd the selectivity ratio of cyclohexanone to cyclohexanol were greatly affe cted by the acidity of metal oxides. When metal oxide has more acidic prope rty, the reactivity on oxidation is increased and the formation of cyclohex anone is more favored. From this result, we proposed a new mechanism for th e biomimetic Gif-KRICT oxidation system.