Oxidative Dehydrogenation of n-Butane: Activity and Kinetics Over VOx/Al2O3 Catalysts

The catalytic activity of a VO x /Al 2 O 3 catalyst for the oxidative dehydrogenation of n -butane is investigated. The effects of reaction temperature, oxygen to n -butane ratio and GHSV on the catalytic performance are examined and optimized. Interestingly, this simple catalyst gives good conversi...

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Veröffentlicht in:Topics in catalysis 2014-11, Vol.57 (17-20), p.1400-1406
Hauptverfasser: Madaan, Neetika, Haufe, Rommy, Shiju, N. Raveendran, Rothenberg, Gadi
Format: Artikel
Sprache:eng
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Zusammenfassung:The catalytic activity of a VO x /Al 2 O 3 catalyst for the oxidative dehydrogenation of n -butane is investigated. The effects of reaction temperature, oxygen to n -butane ratio and GHSV on the catalytic performance are examined and optimized. Interestingly, this simple catalyst gives good conversion and selectivity. Butane was 22–24 %, and the selectivity to C 4 alkenes was 56 %, of which 20–22 % to 1,3-butadiene. Moreover, the catalyst is stable for at least 72 h on stream. Kinetic studies show that the activation barriers for the formation of (butene + butadiene), CO and CO 2 amount to 70.2, 65 and 81.3 kJ/mol respectively.
ISSN:1022-5528
1572-9028
DOI:10.1007/s11244-014-0317-1