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Nanoclusters as Precursors to (MoVW)5O14: In situ and chemical characterisation of the systems of a single phase oxidation catalyst

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Knobl,  Stefan
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Niemeyer,  Dirk
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Knobl, S., Zenkovets, G. A., Kryukova, G. N., Maksimovskaya, R., Larina, T. V., Vasenin, N. T., et al. (2003). Nanoclusters as Precursors to (MoVW)5O14: In situ and chemical characterisation of the systems of a single phase oxidation catalyst. Physical Chemistry Chemical Physics, 23(5), 5343-5348. doi:10.1039/B309952K.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-0EA9-A
Abstract
The ternary oxide (MoVW)5O14 is considered to be highly significant for catalytic, mild selective oxidation reactions. By using UV/Vis, ESR and 95Mo NMR spectroscopies the coordination chem-istry of the molybdate species in the precursor solutions was studied. This work has established that mixing the precursor solutions (ammonium hepta molybdate, ammonium meta tungstate and vanadyl oxalate) forms a polymeric network in which the vanadyl species act as a linker between the molybdate species. Addition of tungsten atoms significantly enhances the polymerisation proc-ess.