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Influence of Support Surface Area and Niobium Addition on the Reactivity of Vanadium Catalysts for Propane Oxidative Dehydrogenation

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Abstract

Vanadium containing catalysts were prepared on silica at vanadia loadings from 1.25 to 12.5% and using different vanadia precursors. Even though no V2O5 crystallites were detected via X-ray powder diffraction or Temperature programmed reduction on the catalysts at vanadia loadings up to 5%, an increased propylene formation rate per gram of vanadium was recorded for catalysts as their surface area increased with decreasing vanadia loading. The propylene formation rate per gram vanadium for all catalysts could be correlated with the total surface area of the catalysts, irrespective of the vanadia loading or vanadia precursor used in the preparation. V-Nb/MCM-41 was found to be the catalyst with the highest propylene formation rate per gram of vanadium. In addition it is also a highly selective catalyst for propane oxidative dehydrogenation resulting in a propylene selectivity of 57% at 30% propane conversion.

Graphical Abstract

Vanadium containing catalysts were prepared on silica at vanadia loadings from 1.25 to 12.5% and using different vanadia precursors. Even though no V2O5 crystallites were detected via XRD or TPR on the catalysts at vanadia loadings up to 5%, an increased propylene formation rate per gram of vanadium was recorded for catalysts as their surface area increased with decreasing vanadia loading. The propylene formation rate per gram vanadium for all catalysts could be correlated with the total surface area of the catalysts, irrespective of the vanadia loading or vanadia precursor used in the preparation.V-Nb/MCM-41 was found to be the catalyst with the highest propylene formation rate per gram of vanadium. In addition it is also a highly selective catalyst for propane ODH resulting in a propylene selectivity of 57% at 30% propane conversion. 

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Acknowledgments

Author(s) hereby acknowledge that the research reported and discussed herein was supported, in whole or in part, by a DOE award, DE-FC36-04GO14272, and the Government may have certain rights in the data contained herein, however, such support and rights do not constitute an endorsement by DOE of the views expressed herein.

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Correspondence to Wolfgang Ruettinger.

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Ruettinger, W., Benderly, A., Han, S. et al. Influence of Support Surface Area and Niobium Addition on the Reactivity of Vanadium Catalysts for Propane Oxidative Dehydrogenation. Catal Lett 141, 15–21 (2011). https://doi.org/10.1007/s10562-010-0459-0

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  • DOI: https://doi.org/10.1007/s10562-010-0459-0

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