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

MPG-Autoren
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Wolfram,  Till
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Hamilton,  Neil
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Trunschke,  Annette
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Zitation

Carrero, C., Kauer, M., Dinse, A., Wolfram, T., Hamilton, N., Trunschke, A., et al. (2014). High performance (VOx)n-(TiOx)m/SBA-15 catalysts for the oxidative dehydrogenation of propane. Catalysis Science & Technology, 4(3), 786-794. doi:10.1039/C3CY00625E.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0015-0F76-9
Zusammenfassung
Grafted VxOy catalysts for oxidative dehydrogenation of propane (ODP) were studied for potential high performance and as model catalysts in the past. We report on a positive synergetic effect capable to considerably enhance 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/h). Moreover, with this catalyst, propene productivity only slightly decreased as a function of propane conversion indicating that propene combustion toward COx occurs slower 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 selectivity.