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Coupling acid catalysis and selective oxidation over MoO3-Fe2O3 for chemical looping oxidative dehydrogenation of propane

Author

Listed:
  • Xianhui Wang

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations)

  • Chunlei Pei

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations)

  • Zhi-Jian Zhao

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations)

  • Sai Chen

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations
    International Campus of Tianjin University)

  • Xinyu Li

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations)

  • Jiachen Sun

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations)

  • Hongbo Song

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations)

  • Guodong Sun

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations
    International Campus of Tianjin University)

  • Wei Wang,

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations
    International Campus of Tianjin University)

  • Xin Chang

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations)

  • Xianhua Zhang

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations
    International Campus of Tianjin University)

  • Jinlong Gong

    (Tianjin University
    Collaborative Innovation Center for Chemical Science & Engineering (Tianjin)
    Haihe Laboratory of Sustainable Chemical Transformations
    International Campus of Tianjin University)

Abstract

Redox catalysts play a vital role in chemical looping oxidative dehydrogenation processes, which have recently been considered to be a promising prospect for propylene production. This work describes the coupling of surface acid catalysis and selective oxidation from lattice oxygen over MoO3-Fe2O3 redox catalysts for promoted propylene production. Atomically dispersed Mo species over γ-Fe2O3 introduce effective acid sites for the promotion of propane conversion. In addition, Mo could also regulate the lattice oxygen activity, which makes the oxygen species from the reduction of γ-Fe2O3 to Fe3O4 contribute to selectively oxidative dehydrogenation instead of over-oxidation in pristine γ-Fe2O3. The enhanced surface acidity, coupled with proper lattice oxygen activity, leads to a higher surface reaction rate and moderate oxygen diffusion rate. Consequently, this coupling strategy achieves a robust performance with 49% of propane conversion and 90% of propylene selectivity for at least 300 redox cycles and ultimately demonstrates a potential design strategy for more advanced redox catalysts.

Suggested Citation

  • Xianhui Wang & Chunlei Pei & Zhi-Jian Zhao & Sai Chen & Xinyu Li & Jiachen Sun & Hongbo Song & Guodong Sun & Wei Wang, & Xin Chang & Xianhua Zhang & Jinlong Gong, 2023. "Coupling acid catalysis and selective oxidation over MoO3-Fe2O3 for chemical looping oxidative dehydrogenation of propane," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37818-w
    DOI: 10.1038/s41467-023-37818-w
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    References listed on IDEAS

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    1. Chaojie Wang & Bing Yang & Qingqing Gu & Yujia Han & Ming Tian & Yang Su & Xiaoli Pan & Yu Kang & Chuande Huang & Hua Liu & Xiaoyan Liu & Lin Li & Xiaodong Wang, 2021. "Near 100% ethene selectivity achieved by tailoring dual active sites to isolate dehydrogenation and oxidation," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    2. Yan Liu & Lang Qin & Zhuo Cheng & Josh W. Goetze & Fanhe Kong & Jonathan A. Fan & Liang-Shih Fan, 2019. "Near 100% CO selectivity in nanoscaled iron-based oxygen carriers for chemical looping methane partial oxidation," Nature Communications, Nature, vol. 10(1), pages 1-6, December.
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