Inorganic and Nano-Metal Chemistry p. 1312 - 1317 (2017)
Update date:2022-08-11
Topics:
Shojaei, Abdollah Fallah
Shirini, Farhad
Hedayati, Elaheh
CuCr2O4/TiO2 nanocomposites with different TiO2 contents were synthesized by using sol-gel method. Products were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Results demonstrated a cubic normal spinel structure for copper (2+) chromite, with the particle sizes of about 25–40 nm. Activities of CuCr2O4 nanopowders and CuCr2O4/TiO2 nanocomposite were tested for oxidation of benzylic alcohols to aldehydes at reflux, light irradiation, and microwave conditions. The influence of some parameters on the oxidation of alcohol, such as optimum molar ratio of chromite to titanium dioxide, catalyst dosage, and type and amount of oxidant and solvents (dichloromethane, acetonitrile, and ethanol) was studied to determine the optimal operating conditions for alcohol oxidation in reflux, light irradiation, and microwave conditions.
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