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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents



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ID: 281706.4, Fritz-Haber-Institut / Inorganic Chemistry
Structure stabilizing effect of tungsten in mixed molybdenum oxides with Mo5O14-type structure
Authors:Rödel, Eva; Timpe, Olaf; Trunschke, Annette; Zenkovets, Galina A.; Kryukova, Galina N.; Schlögl, Robert; Ressler, Thorsten
Language:English
Research Context:8, Molybdenum oxide based catalysts for selective oxidation of C3 hydrocarbon
Date of Publication (YYYY-MM-DD):2007
Title of Journal:Catalysis Today
Journal Abbrev.:Catal. Today
Volume:126
Issue / Number:1-2
Start Page:112
End Page:118
Review Status:Peer-review
Audience:Experts Only
Abstract / Description: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.
Free Keywords:Mo5O14-type structure; X-ray diffraction; XAS; Redox properties
External Publication Status:published
Document Type:Article
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Preparation
Fritz-Haber-Institut/Inorganic Chemistry/Inorganic Chemistry
External Affiliations:Boreskov Institute of Catalysis, Novosibirsk 630090 (Russia)

Technische Universität Berlin, Institute of Chemistry, Sekr. C 2, Strasse des 17. Juni 135, D-10623 Berlin, Germany)
Identifiers:URL:http://dx.doi.org/10.1016/j.cattod.2007.03.004
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