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  An in situ DRIFTS Study of the Active Phase of the Heteropoly Acid Catalyst H4[PVMo11O40] in Oxidation Reactions

Herzog, B., Wohlers, M., & Schlögl, R. (1997). An in situ DRIFTS Study of the Active Phase of the Heteropoly Acid Catalyst H4[PVMo11O40] in Oxidation Reactions. In J. Mink, G. Keresztury, & R. Kellner (Eds.), Progress in Fourier Transform Spectroscopy (pp. 703-704). Vienna: Springer.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0009-0591-D Version Permalink: https://hdl.handle.net/21.11116/0000-0009-0592-C
Genre: Conference Paper

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 Creators:
Herzog, Bernhard1, Author           
Wohlers, Michael2, Author           
Schlögl, Robert2, Author           
Affiliations:
1Fritz Haber Institute, Max Planck Society, ou_24021              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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 Abstract: Heteropoly acid (HPA) catalysts based on the title compound exhibit the well-known Keggin-structure at temperatures relevant for catalytic oxidation processes (520-570 K). In situ DRIFTS (diffuse reflectance infrared Fourier-transform spectroscopy) data show that a variety of solid-state reactions occur with the dehydrogenation of isobutyric acid (IBA) leading to structural rearrangements and partial decomposition of the HPA anions. These changes involve the formation of lacunary structures and vanadyl species. Re-oxidation with O2/H2O at reaction temperature re-establishes the highly symmetric structure of the Keggin-anions.

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Language(s): eng - English
 Dates: 1997
 Publication Status: Issued
 Pages: 2
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/978-3-7091-6840-0_184
 Degree: -

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Title: 10th International Conference on Fourier Transform Spectroscopy
Place of Event: Budapest, Hungary
Start-/End Date: 1995-08-27 - 1995-09-01

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Title: Progress in Fourier Transform Spectroscopy
Source Genre: Proceedings
 Creator(s):
Mink, Janos, Editor
Keresztury, Gábor, Editor
Kellner, Robert, Editor
Affiliations:
-
Publ. Info: Vienna : Springer
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 703 - 704 Identifier: ISBN: 978-3-211-82931-8

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Title: Mikrochimica Acta Supplement
Source Genre: Series
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Publ. Info: -
Pages: - Volume / Issue: 14 Sequence Number: - Start / End Page: - Identifier: -