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The promotion effect of π-π interactions in Pd NPs catalysed selective hydrogenation

Author

Listed:
  • Miao Guo

    (Chinese Academy of Sciences)

  • Sanjeevi Jayakumar

    (Chinese Academy of Sciences)

  • Mengfei Luo

    (Zhejiang Normal University)

  • Xiangtao Kong

    (Anyang Normal University)

  • Chunzhi Li

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

  • He Li

    (Chinese Academy of Sciences)

  • Jian Chen

    (Zhejiang Normal University)

  • Qihua Yang

    (Chinese Academy of Sciences
    Zhejiang Normal University)

Abstract

The utilization of weak interactions to improve the catalytic performance of supported metal catalysts is an important strategy for catalysts design, but still remains a big challenge. In this work, the weak interactions nearby the Pd nanoparticles (NPs) are finely tuned by using a series of imine-linked covalent organic frameworks (COFs) with different conjugation skeletons. The Pd NPs embedded in pyrene-COF are ca. 3 to 10-fold more active than those in COFs without pyrene in the hydrogenation of aromatic ketones/aldehydes, quinolines and nitrobenzene, though Pd have similar size and surface structure. With acetophenone (AP) hydrogenation as a model reaction, systematic studies imply that the π-π interaction of AP and pyrene rings in the vicinity of Pd NPs could significantly reduce the activation barrier in the rate-determining step. This work highlights the important role of non-covalent interactions beyond the active sites in modulating the catalytic performance of supported metal NPs.

Suggested Citation

  • Miao Guo & Sanjeevi Jayakumar & Mengfei Luo & Xiangtao Kong & Chunzhi Li & He Li & Jian Chen & Qihua Yang, 2022. "The promotion effect of π-π interactions in Pd NPs catalysed selective hydrogenation," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29299-0
    DOI: 10.1038/s41467-022-29299-0
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    References listed on IDEAS

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    1. Simon H. Pang & Carolyn A. Schoenbaum & Daniel K. Schwartz & J. Will Medlin, 2013. "Directing reaction pathways by catalyst active-site selection using self-assembled monolayers," Nature Communications, Nature, vol. 4(1), pages 1-6, December.
    2. Meiting Zhao & Kuo Yuan & Yun Wang & Guodong Li & Jun Guo & Lin Gu & Wenping Hu & Huijun Zhao & Zhiyong Tang, 2016. "Metal–organic frameworks as selectivity regulators for hydrogenation reactions," Nature, Nature, vol. 539(7627), pages 76-80, November.
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