Abstract
High catalytic activity of tungstate intercalated in hydrotalcite-encapsulated magnetic Fe3O4 nanoparticles have been prepared. High resolution transmission electron microscopy characterization demonstrated the formation of Fe3O4 nanoparticles within LDH matrix with a mean diameter of 1–3 nm. The catalyst of WO4 2−/LDH@Fe3O4 exhibited excellent catalytic activity for the oxidation of various sulfides. The magnetic properties of the WO4 2−/LDH@Fe3O4 provided a convenient route for separation of the catalyst from the reaction mixture by application of an external permanent magnet. The spent catalyst could be recycled without appreciable loss of catalytic activity.
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Yuan, C., Liu, H. & Gao, X. Magnetically Recoverable Heterogeneous Catalyst: Tungstate Intercalated Mg–Al-Layered Double Hydroxides-Encapsulated Fe3O4 Nanoparticles for Highly Efficient Selective Oxidation of Sulfides with H2O2 . Catal Lett 144, 16–21 (2014). https://doi.org/10.1007/s10562-013-1129-9
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DOI: https://doi.org/10.1007/s10562-013-1129-9