Nanoclusters as precursors to (MoVW)5O14: In situ and chemical characterisation of the systems of a single phase oxidation catalyst
Autor: | Nikolay T. Vasenin, Raisa I. Maksimovskaya, Galina A. Zenkovets, Robert Schlögl, Dirk Niemeyer, Tatyana V. Larina, Vladimir F. Anufrienko, Galina N. Kryukova, Stefan Knobl |
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Rok vydání: | 2003 |
Předmět: | |
Zdroj: | Phys. Chem. Chem. Phys.. 5:5343-5348 |
ISSN: | 1463-9084 1463-9076 |
Popis: | 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 |
Databáze: | OpenAIRE |
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