Supported molybdenum complex on the surface of magnetite-mesoporous silica nanocomposite: new catalyst for the epoxidation of olefins
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Magnetite-mesoporous silica nanocomposite was functionalized with molybdenum complex to achieve an easily recoverable heterogeneous catalyst for the epoxidation of olefins. Physicochemical characterization methods such as Fourier transform infrared and inductively coupled plasma optical emission spectroscopies, X-ray diffraction, vibrating sample magnetometry, and transmission electron microscopy confirmed the immobilization of molybdenum complex on the surface of the magnetite-mesoporous silica nanocomposite. This supported molybdenum catalyst showed high catalytic activity and selectivity (> 99%) toward the epoxidation of olefins and was readily separated from the reaction mixture by an external magnet for employing in the next epoxidation reactions. The prepared catalyst showed reusability for three times without significant loss of its efficiency.
KeywordsMagnetite-mesoporous Nanocomposite Molybdenum Heterogeneous catalyst Epoxidation
- 21.S.T. Oyama ed. Mechanisms in Homogeneous and Heterogeneous Epoxidation Catalysis,. (Elsevier, Amsterdam, 2008)Google Scholar
- 25.M. Masteri-Farahani, P. Eghbali, F. Salimi, J. Nanostruct. 1, 14–20 (2012)Google Scholar
- 29.S. Gregg, K. Sing, Adsorption, surface area, and porosity, (Academic Press, New York, 1982)Google Scholar