Dioxygen activation in photooxidation of diphenylmethane by a dioxomolybdenum(VI) complex anchored covalently onto mesoporous titania
作者： Nelson J. Castellanos , Fernando Martínez , Frédéric Lynen , Shyam Biswas , Pascal Van Der Voort
DOI: 10.1007/S11243-012-9668-2
关键词:
摘要: A dioxomolybdenum(VI) complex has been covalently anchored onto mesoporous titania by a silicon-assisted transesterification route. The grafting of the to structure was confirmed diffuse reflectance infrared Fourier transform, Raman and UV–Vis spectroscopy nitrogen sorption experiments. ability grafted activate molecular oxygen (O2) evaluated in photooxidation diphenylmethane produce benzophenone. monitored continuously situ dispersive spectroscopy. scheme for activation under very mild conditions is proposed. comparison with same commercial titanium P-25 silica gel revealed both beneficial effect existence synergistic between MoO/TiO2/O2/light entities, which promotes process green chemistry conditions. Finally, heterogeneous catalyst sustainable; it can be recycled reused without significant loss activity or selectivity.
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