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Auto-accelerated dehydrogenation of alkane assisted by in-situ formed olefins over boron nitride under aerobic conditions

Author

Listed:
  • Zhankai Liu

    (Dalian University of Technology)

  • Ziyi Liu

    (Dalian University of Technology)

  • Jie Fan

    (Dalian University of Technology)

  • Wen-Duo Lu

    (Dalian University of Technology)

  • Fan Wu

    (Dalian University of Technology)

  • Bin Gao

    (Dalian University of Technology)

  • Jian Sheng

    (Dalian University of Technology)

  • Bin Qiu

    (Dalian University of Technology)

  • Dongqi Wang

    (Dalian University of Technology)

  • An-Hui Lu

    (Dalian University of Technology)

Abstract

Oxidative dehydrogenation (ODH) of alkane over boron nitride (BN) catalyst exhibits high olefin selectivity as well as a small ecological carbon footprint. Here we report an unusual phenomenon that the in-situ formed olefins under reactions are in turn actively accelerating parent alkane conversion over BN by interacting with hydroperoxyl and alkoxyl radicals and generating reactive species which promote oxidation of alkane and olefin formation, through feeding a mixture of alkane and olefin and DFT calculations. The isotope tracer studies reveal the cleavage of C-C bond in propylene when co-existing with propane, directly evidencing the deep-oxidation of olefins occur in the ODH reaction over BN. Furthermore, enhancing the activation of ethane by the in-situ formed olefins from propane is successfully realized at lower temperature by co-feeding alkane mixture strategy. This work unveils the realistic ODH reaction pathway over BN and provides an insight into efficiently producing olefins.

Suggested Citation

  • Zhankai Liu & Ziyi Liu & Jie Fan & Wen-Duo Lu & Fan Wu & Bin Gao & Jian Sheng & Bin Qiu & Dongqi Wang & An-Hui Lu, 2023. "Auto-accelerated dehydrogenation of alkane assisted by in-situ formed olefins over boron nitride under aerobic conditions," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-022-35776-3
    DOI: 10.1038/s41467-022-35776-3
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    References listed on IDEAS

    as
    1. Jinshu Tian & Jiangqiao Tan & Zhaoxia Zhang & Peijie Han & Min Yin & Shaolong Wan & Jingdong Lin & Shuai Wang & Yong Wang, 2020. "Direct conversion of methane to formaldehyde and CO on B2O3 catalysts," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    2. Pierre Kube & Jinhu Dong & Nuria Sánchez Bastardo & Holger Ruland & Robert Schlögl & Johannes T. Margraf & Karsten Reuter & Annette Trunschke, 2022. "Green synthesis of propylene oxide directly from propane," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
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