Back to Search
Start Over
The highly selective aerobic oxidation of cyclohexane to cyclohexanone and cyclohexanol over V2O5@TiO2 under simulated solar light irradiation.
- Source :
- Green Chemistry; 1/7/2017, Vol. 19 Issue 1, p311-318, 8p
- Publication Year :
- 2017
-
Abstract
- The highly selective aerobic oxidation of cyclohexane to cyclohexanone and cyclohexanol (KA-oil) under benign and green conditions is still a challenging topic. In this work, V<subscript>2</subscript>O<subscript>5</subscript>@TiO<subscript>2</subscript> catalysts were prepared by V species deposited on TiO<subscript>2</subscript> (P25) and characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), and UV-vis diffuse reflectance techniques. The selective aerobic oxidation of cyclohexane was carried out over V<subscript>2</subscript>O<subscript>5</subscript>@TiO<subscript>2</subscript> catalysts with oxygen as an oxidant under simulated light irradiation. The influences of solvents, metals and mass of V species deposited on TiO<subscript>2</subscript>, pressure of oxygen, and reaction time on the reaction were investigated. It was found that the V species deposited on the TiO<subscript>2</subscript> surface was very efficient for the photocatalytic oxidation of cyclohexane under simulated solar light irradiation. More interestingly, the selectivity of the reaction in an acetonitrile/water mixed solvent was much higher than that in other solvents. Under the optimized conditions, the selectivity to KA-oil products could be nearly 100% at a cyclohexane conversion of 18.9%. The possible pathway for the catalytic reaction was proposed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 19
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 123333078
- Full Text :
- https://doi.org/10.1039/c6gc02748b