Abstract
Wells–Dawson type 18-tungstophosphoric acid (H6P2W18O62) as guest was encapsulated inside the nanocages of mesoporous SBA-16 host. The pore entrance of SBA-16 material was modified by silylating reagent to prevent the escape of encapsulated H6P2W18O62 from the nanocages. The prepared host–guest material was characterized by different physicochemical techniques. X-ray diffraction and transmission electron microscopy analyses indicated the retention of mesoporous structure of SBA-16 and well-dispersion of the H6P2W18O62 into the nanocages of SBA-16. The obtained material exhibited high catalytic activity, stability, and recyclability in the epoxidation of olefins and oxidation of alcohols in the presence of H2O2 as oxidant.
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Masteri-Farahani, M., Najafi, G.R., Modarres, M. et al. Wells–Dawson heteropoly acid encapsulated into the nanocages of SBA-16 as heterogeneous catalyst for the oxidation of olefins and alcohols. J Porous Mater 23, 285–290 (2016). https://doi.org/10.1007/s10934-015-0080-0
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DOI: https://doi.org/10.1007/s10934-015-0080-0