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Issue 8, 2015
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A high-throughput reactor system for optimization of Mo–V–Nb mixed oxide catalyst composition in ethane ODH

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Abstract

75 Mo–V–Nb mixed oxide catalysts with a broad range of compositions were prepared by a simple evaporation method, and were screened for the ethane oxidative dehydrogenation (ODH) reaction. The compositions of these 75 catalysts were systematically changed by varying the Nb loading, and the Mo/V molar ratio. Characterization by XRD, XPS, H2-TPR and SEM revealed that an intimate structure is formed among the 3 components. The strong interaction among different components leads to the formation of a new phase or an “intimate structure”. The dependency of conversion and selectivity on the catalyst composition was clearly demonstrated from the results of high-throughput testing. The optimized Mo–V–Nb molar composition was confirmed to be composed of a Nb content of 4–8%, a Mo content of 70–83%, and a V content of 12–25%. The enhanced catalytic performance of the mixed oxides is obviously due to the synergistic effects of the different components. The optimized compositions for ethane ODH revealed in our high-throughput tests and the structural information provided by our characterization studies can serve as the starting point for future efforts to improve the catalytic performance of Mo–V–Nb oxides.

Graphical abstract: A high-throughput reactor system for optimization of Mo–V–Nb mixed oxide catalyst composition in ethane ODH

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Publication details

The article was received on 01 Apr 2015, accepted on 16 Jun 2015 and first published on 16 Jun 2015


Article type: Paper
DOI: 10.1039/C5CY00488H
Citation: Catal. Sci. Technol., 2015,5, 4164-4173
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    A high-throughput reactor system for optimization of Mo–V–Nb mixed oxide catalyst composition in ethane ODH

    H. Zhu, P. Laveille, D. C. Rosenfeld, M. N. Hedhili and J. Basset, Catal. Sci. Technol., 2015, 5, 4164
    DOI: 10.1039/C5CY00488H

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