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High performance (VOx)(n)-( TiOx)(m)/SBA-15 catalysts for the oxidative dehydrogenation of propane

By Carlos Carrero, Markus Kauer, Arne Dinse, Till Wolfram, Neil Hamilton, Annette Trunschke, Robert Schlögl and Reinhard Schomäcker

Abstract

Grafted VxOy catalysts for oxidative dehydrogenation of propane (ODP) have been studied due to their potential high performance and as model catalysts in the past. We report on a positive synergetic effect capable of considerably enhancing the propene productivities above reported performances. The most productive catalysts were found at metal loadings (V + Ti) close to the monolayer coverage. The 4V/13Ti/SBA-15 catalyst presented a considerably high productivity (6–9 kgpropene kgcat−1 h−1). Moreover, with this catalyst, propene productivity only slightly decreased as a function of propane conversion, indicating that propene combustion toward COx occurs more slowly in comparison to other catalysts exhibiting high propene productivities. A detailed kinetic analysis of the 4V/13Ti/SBA-15 catalyst revealed that high vanadia and titania dispersions are required for high propene productivity.DFG, SFB 546, Struktur, Dynamik und Reaktivität von Übergangsmetalloxid-Aggregate

Topics: 540 Chemie und zugeordnete Wissenschaften
Year: 2014
DOI identifier: 10.1039/c3cy00625e
OAI identifier: oai:depositonce.tu-berlin.de:11303/5612
Provided by: DepositOnce
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