Analysis of structural transformations during the synthesis of a MoVTeNb mixed 
oxide calalyst

Beato, Pablo; Blume, Andreas; Girgsdies, Frank; Jentoft, Rolf E.; Schlögl, Robert; Timpe, Olaf; Trunschke, Annette; Weinberg, Gisela; Basher, Qureshia; Hamid, Faziliana A.; Abd Hamid, Sharifah Bee; Omar, Emmy; Mohd Salim, Lisa

doi:10.1016/j.apcata.2006.03.014

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Analysis of structural transformations during the synthesis of a MoVTeNb mixed oxide calalyst

MPS-Authors

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Beato, Pablo
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21377

Blume, Andreas
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21557

Girgsdies, Frank
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21674

Jentoft, Rolf E.
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22071

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

/persons/resource/persons22174

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

/persons/resource/persons22181

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

/persons/resource/persons22227

Weinberg, Gisela
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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MoVTeNb_ApplCatal_rev_e-doc.pdf
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引用

Beato, P., Blume, A., Girgsdies, F., Jentoft, R. E., Schlögl, R., Timpe, O., Trunschke, A., Weinberg, G., Basher, Q., Hamid, F. A., Abd Hamid, S. B., Omar, E., & Mohd Salim, L. (2006). Analysis of structural transformations during the synthesis of a MoVTeNb mixed oxide calalyst. Applied Catalysis A, 307, 137-147. doi:10.1016/j.apcata.2006.03.014.

引用: https://hdl.handle.net/11858/00-001M-0000-0011-04C8-5

要旨

This work presents a detailed investigation of the preparation routine for the multi-metal oxide Mo1V0.30Te0.23Nb0.125Ox used as catalyst for the selective oxidation of propane to acrylic acid. In situ Raman spectroscopy on the initial aqueous polyoxometalate solution prepared from ammonium heptamolybdate, ammonium metavanadate and hexaoxotelluric acid reveals the coexistence of Anderson-type anions [TeM6O24]n−, M = Mo, V; n ≥ 6 and protonated decavanadate species [HxV10O28](6−x)−. Raman analysis showed that the monomeric motif of the Anderson-type tellurate is preserved after addition of the Nb precursor and the subsequent spray-drying process. Calcination of the X-ray amorphous spray-dried material in air at 548 K seems to be the essential step, leading to a re-arrangement of the tellurate building blocks, generating nanocrystalline precursors of the phases finally established during treatment in helium at 873 K.