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Highly efficient recycling of polyester wastes to diols using Ru and Mo dual-atom catalyst

Author

Listed:
  • Minhao Tang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Ji Shen

    (Tsinghua University)

  • Yiding Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yanfei Zhao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Tao Gan

    (Chinese Academy of Sciences)

  • Xusheng Zheng

    (University of Science and Technology of China)

  • Dingsheng Wang

    (Tsinghua University)

  • Buxing Han

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Zhimin Liu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

The chemical recycling of polyester wastes is of great significance for sustainable development, which also provides an opportunity to access various oxygen-containing chemicals, but generally suffers from low efficiency or separation difficulty. Herein, we report anatase TiO2 supported Ru and Mo dual-atom catalysts, which achieve transformation of various polyesters into corresponding diols in 100% selectivity via hydrolysis and subsequent hydrogenation in water under mild conditions (e.g., 160 °C, 4 MPa). Compelling evidence is provided for the coexistence of Ru single-atom and O-bridged Ru and Mo dual-atom sites within this kind of catalysts. It is verified that the Ru single-atom sites activate H2 for hydrogenation of carboxylic acid derived from polyester hydrolysis, and the O-bridged Ru and Mo dual-atom sites suppress hydrodeoxygenation of the resultant alcohols due to a high reaction energy barrier. Notably, this kind of dual-atom catalysts can be regenerated with high activity and stability. This work presents an effective way to reconstruct polyester wastes into valuable diols, which may have promising application potential.

Suggested Citation

  • Minhao Tang & Ji Shen & Yiding Wang & Yanfei Zhao & Tao Gan & Xusheng Zheng & Dingsheng Wang & Buxing Han & Zhimin Liu, 2024. "Highly efficient recycling of polyester wastes to diols using Ru and Mo dual-atom catalyst," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-49880-z
    DOI: 10.1038/s41467-024-49880-z
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    References listed on IDEAS

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    1. Bo Sun & Jie Zhang & Maolin Wang & Shixiang Yu & Yao Xu & Shuheng Tian & Zirui Gao & Dequan Xiao & Guosheng Liu & Wu Zhou & Meng Wang & Ding Ma, 2023. "Valorization of waste biodegradable polyester for methyl methacrylate production," Nature Sustainability, Nature, vol. 6(6), pages 712-719, June.
    2. Ding Ma, 2023. "Transforming end-of-life plastics for a better world," Nature Sustainability, Nature, vol. 6(10), pages 1142-1143, October.
    3. Blaise L. Tardy & Joseph J. Richardson & Luiz G. Greca & Junling Guo & Julien Bras & Orlando J. Rojas, 2023. "Advancing bio-based materials for sustainable solutions to food packaging," Nature Sustainability, Nature, vol. 6(4), pages 360-367, April.
    4. Wei Zeng & Yanfei Zhao & Fengtao Zhang & Rongxiang Li & Minhao Tang & Xiaoqian Chang & Ying Wang & Fengtian Wu & Buxing Han & Zhimin Liu, 2024. "A general strategy for recycling polyester wastes into carboxylic acids and hydrocarbons," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    5. Michael Zwicky Hauschild & Anders Bjørn, 2023. "Pathways to sustainable plastics," Nature Sustainability, Nature, vol. 6(5), pages 487-488, May.
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