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Structure stabilizing effect of tungsten in mixed molybdenum oxides with Mo5O14-type structure

MPS-Authors
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Rödel,  Eva
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Timpe,  Olaf
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Trunschke,  Annette
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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Ressler,  Thorsten
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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281706.pdf
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Citation

Rödel, E., Timpe, O., Trunschke, A., Zenkovets, G. A., Kryukova, G. N., Schlögl, R., et al. (2007). Structure stabilizing effect of tungsten in mixed molybdenum oxides with Mo5O14-type structure. Catalysis Today, 126(1-2), 112-118. Retrieved from http://dx.doi.org/10.1016/j.cattod.2007.03.004.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-02CA-2
Abstract
Bulk structural properties of single phase crystalline (Mo0.91V0.09)5O14 and (Mo0.68V0.23W0.09)5O14 materials were investigated using in situ X-ray diffraction and in situ X-ray absorption spectroscopy at three metal edges. Temperature programmed experiments in reducing (propene) and oxidizing (oxygen) atmosphere and isothermal redox experiments at 773 K revealed differences in the bulk properties of the two phases studied. A structure stabilizing effect of tungsten in (MoVW)5O14 under oxidizing conditions was found. Moreover, tungsten centers in a (MoVW) dioxide material exert a structure-directing effect towards re-oxidation to a Mo5O14-type structure.