Abstract
Magnetic ferrite Mg1−xCuxFe2O4 (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) nanocrystalline complex oxides were prepared by sol–gel auto-combustion method, and characterized by X-ray diffractometry, Fourier transform infrared spectrophotometry, Raman spectrometry, scanning electron microscopy and transmission electron microscopy. Their catalytic performances were evaluated in oxidation of styrene in water using hydrogen peroxide (30 %) as oxidant. The samples were found to be efficient catalysts for the oxidation of styrene to benzaldehyde. Especially, when Mg0.5Cu0.5Fe2O4 was used as catalyst, 21.8 % of styrene conversion and 83.9 % of selectivity for benzaldehyde were obtained at 80 °C for 9 h reaction. The catalyst can be magnetically separated easily for reuse and no obvious loss of activity was observed when reused in five consecutive runs.
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Acknowledgments
The authors are grateful to the National Natural Science Foundation of China (51302222), the Scientific Research Fund of Northwest Normal University (NWNU-LKQN-10-28) and Program for Changjiang Scholars and Innovative Research Team in University (IRT1177) for financial support.
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Cai, X., Wang, H., Zhang, Q. et al. Selective oxidation of styrene efficiently catalyzed by spinel Mg–Cu ferrite complex oxides in water. J Sol-Gel Sci Technol 69, 33–39 (2014). https://doi.org/10.1007/s10971-013-3181-8
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DOI: https://doi.org/10.1007/s10971-013-3181-8