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Dehydrogenation of ethane assisted by CO2 over Y-doped ceria supported Au catalysts

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Abstract

Dehydrogenation of ethane assisted by CO2 has been investigated over Au catalyst supported on Y-doped CeO2 nanorod. The catalysts were characterized by XRD, TEM, N2 adsorption, XPS, TG, H2-TPR and Raman spectroscopy. Enhanced activity can be obtained after the proper Y doping. The optimal catalyst Au/Ce0.9Y0.1 exhibits an ethane conversion of 20.9% and nearly 100% selectivity to ethylene without any evident tendency of deactivation in 50 h. The reducibility of surface oxygen species is found to play a key role in the dehydrogenation assisted by CO2, which can be improved by proper Y doping into CeO2 nanorod. The promoting effect of CO2 on activity is evident over Au/Ce0.9Y0.1 catalyst, due to the quick transformation of H2 product into H2O by the reverse water gas shift reaction. The catalyst stability is also improved by the addition of CO2, attributed to the elimination of coke by Bouduoard reaction.

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Data availability

The datasets of current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work was funded by the National Key R&D Program of Ministry of Science and Technology (2017YFB0602204), National Natural Science Foundation of China (22072027, 91645201) and the Science & Technology Commission of Shanghai Municipality (19DZ2270100).

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Authors and Affiliations

  1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, People’s Republic of China

    Qi Xie, Tianqi Lei, Weiming Hua, Yinghong Yue & Zi Gao

  2. Shanghai Research Institute of Petrochemical Technology, Shanghai, 201208, People’s Republic of China

    Changxi Miao

Authors
  1. Qi Xie
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  2. Changxi Miao
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  3. Tianqi Lei
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  4. Weiming Hua
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  5. Yinghong Yue
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  6. Zi Gao
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Contributions

Conceptualization: YY, TL; Methodology: CM, TL; Formal analysis and investigation: QX; Writing—original draft preparation: QX; Writing—review and editing: YY, WH; Supervision: YY, ZG.

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Correspondence to Yinghong Yue.

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Xie, Q., Miao, C., Lei, T. et al. Dehydrogenation of ethane assisted by CO2 over Y-doped ceria supported Au catalysts. Reac Kinet Mech Cat 132, 417–429 (2021). https://doi.org/10.1007/s11144-020-01910-9

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