Novel MoVSbOx-type catalysts for selective isobutane oxidation

A new sol–gel synthesis procedure is proposed for the preparation of MoVSbOx catalysts for the selective oxidation of isobutane. Physico-chemical characterization of the materials calcined at 400°C, showed essentially amorphous catalysts, with long-range order. Increase of calcination temperature, h...

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Bibliographic Details
Published in:Catalysis today 2004-07, Vol.91-92, p.265-269
Main Authors: Paul, Johan S, Groothaert, Marijke H, Kirschhock, Christine E.A, Lebedev, Oleg I, Jacobs, Pierre A, Maier, Wilhelm F
Format: Article
Language:English
Subjects:
Amorphous
Catalysis
Chemistry
Combinatorial chemistry
Exact sciences and technology
Gas-phase
General and physical chemistry
Heterogeneous catalysis
High-throughput experimentation (hte)
Isobutane
Mixed oxides
Mo–V–Sb
Oxidation
Sol–gel process
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:A new sol–gel synthesis procedure is proposed for the preparation of MoVSbOx catalysts for the selective oxidation of isobutane. Physico-chemical characterization of the materials calcined at 400°C, showed essentially amorphous catalysts, with long-range order. Increase of calcination temperature, however, resulted in the formation of small crystalline regions, confirmed through TEM. EPR measurements on the calcined samples pointed to the presence of isolated and magnetically interacting V(IV) species. The reported catalysts proved to be much more selective for partial oxidation compared to a literature reference catalyst. Furthermore, it is shown that this versatile synthesis recipe forms an excellent start for high-throughput and combinatorial studies.
ISSN:0920-5861
1873-4308
DOI:10.1016/j.cattod.2004.03.041