Nanostructuring of binary molybdenum oxide catalysts for propene oxidation

Binary molybdenum oxides are active catalysts for propene oxidation to acrolein if they are structurally different from orthorhombic MoO 3 (o-Mo). The periodical structure of the as-synthesized precatalyst must be different from o-Mo to create the activity. Additional features typical for efficient...

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Bibliographic Details
Published in:Journal of catalysis 2004-07, Vol.225 (1), p.78-85
Main Authors: Wagner, J.B., Abd Hamid, S.B., Othman, D., Timpe, O., Knobl, S., Niemeyer, D., Su, D.S., Schlögl, R.
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Defect structures
Exact sciences and technology
General and physical chemistry
Molybdenum oxides
Phase transformation
Propene
Selective oxidation
TEM
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:Binary molybdenum oxides are active catalysts for propene oxidation to acrolein if they are structurally different from orthorhombic MoO 3 (o-Mo). The periodical structure of the as-synthesized precatalyst must be different from o-Mo to create the activity. Additional features typical for efficient catalysts are a bulk nanostructuring and a complex surface termination that are detectable in TEM examinations only. After transition into defective o-Mo the samples exhibit much reduced activities. The implications of these findings on the functional analysis of complex selective oxidation catalysts are discussed.
ISSN:0021-9517
1090-2694
DOI:10.1016/j.jcat.2004.03.041