Oxidative dehydrogenation of cyclohexane over alumina-supported vanadium oxide nanoliths

In the oxidative dehydrogenation of cyclohexane by highly uniform vanadium oxide on alumina catalysts, the activity of vanadia polymers was higher than monomers for every reaction in the network ( k 2– k 6) except for the formation of cyclohexene ( k 1) where the activity of monomers was higher. Fea...

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Bibliographic Details
Published in:Journal of catalysis 2010-02, Vol.269 (2), p.421-431
Main Authors: Feng, H., Elam, J.W., Libera, J.A., Pellin, M.J., Stair, P.C.
Format: Article
Language:English
Subjects:
Anodic aluminum oxide (AAO)
Atomic layer deposition (ALD)
Catalysis
Catalysts
Chemical reactions
Chemistry
Colloidal state and disperse state
Cyclohexane
Exact sciences and technology
General and physical chemistry
Nanomaterials
Oxidation
Oxidative dehydrogenation (ODH)
Porous materials
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Vanadium oxides (VOx)
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Summary:In the oxidative dehydrogenation of cyclohexane by highly uniform vanadium oxide on alumina catalysts, the activity of vanadia polymers was higher than monomers for every reaction in the network ( k 2– k 6) except for the formation of cyclohexene ( k 1) where the activity of monomers was higher. Featuring highly ordered one-dimensional nanopores, anodic aluminum oxide (AAO) makes an ideal substrate for fabrication of catalysts by atomic layer deposition (ALD). Vanadium oxide (VOx) catalysts supported on AAOs and prepared by ALD and incipient wetness impregnation are characterized by X-ray fluorescence and ultraviolet–visible (UV–Vis) spectroscopy. At low loadings (
ISSN:0021-9517
1090-2694
DOI:10.1016/j.jcat.2009.11.026