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  Multifunctionality of Crystalline MoV(TeNb) M1 Oxide Catalysts in Selective Oxidation of Propane and Benzyl Alcohol

Amakawa, K., Kolen’ko, Y. V., Villa, A., Schuster, M. E., Csepei, L.-I., Weinberg, G., et al. (2013). Multifunctionality of Crystalline MoV(TeNb) M1 Oxide Catalysts in Selective Oxidation of Propane and Benzyl Alcohol. ACS Catalysis, 3(6), 1103-1113. doi:10.1021/cs400010q.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-FA39-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0017-8C3E-8
Genre: Journal Article

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 Creators:
Amakawa, Kazuhiko1, Author              
Kolen’ko, Yuri V.1, Author              
Villa, Alberto2, Author              
Schuster, Manfred Erwin1, Author              
Csepei, Lenard-Istvan1, Author              
Weinberg, Gisela1, Author              
Wrabetz, Sabine1, Author              
d'Alnoncourt, Raoul Naumann1, Author              
Girgsdies, Frank1, Author              
Prati, Laura2, Author
Schlögl, Robert1, Author              
Trunschke, Annette1, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
2Dipartimento di Chimica Inorganica Metallorganica e Analitica L. Malatesta, Università degli Studi di Milano, ou_persistent22              

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Free keywords: propane, benzyl alcohol, selective oxidation, acrylic acid, M1, mixed oxide, MoVTeNbO, multifunctionality
 Abstract: Propane oxidation at 653–673 K and benzyl alcohol oxidation at 393 K over phase-pure MoV(TeNb) M1 oxide catalysts were studied to gain insight into the multiple catalytic functions of the surface of the M1 structure. Electron microscopy and X-ray diffraction confirmed the phase purity of the M1 catalysts. Propane oxidation yields acrylic acid via propene as intermediate, while benzyl alcohol oxidation gives benzaldehyde, benzoic acid, benzyl benzoate, and toluene. The consumption rates of benzyl alcohol and propane level in the same range despite huge difference in reaction temperature, suggesting high activity of M1 for alcohol oxidation. Metal–oxygen sites on the M1 surface are responsible for the conversion of the two reactants. However, different types of active sites and reaction mechanisms may be involved. Omitting Te and Nb from the M1 framework eliminates acrylic acid selectivity in propane oxidation, while the product distribution in benzyl alcohol oxidation remains unchanged. The results suggest that the surface of M1 possesses several types of active sites that likely perform a complex interplay under the harsh propane oxidation condition. Possible reaction pathways and mechanisms are discussed.

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Language(s): eng - English
 Dates: 2013-03-272013-01-032013-04-082013-04-082013-04-26
 Publication Status: Published in print
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1021/cs400010q
 Degree: -

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Title: ACS Catalysis
Source Genre: Journal
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Publ. Info: Washington, DC : ACS
Pages: - Volume / Issue: 3 (6) Sequence Number: - Start / End Page: 1103 - 1113 Identifier: Other: 2155-5435
CoNE: /journals/resource/2155-5435