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Catalytic cooperation between Ru and Pd atoms on hierarchical porous Ce-based oxide for boosting engine exhaust purification

Author

Listed:
  • Linsheng Xu

    (China University of Petroleum)

  • Tian Qin

    (Shanghai Jiao Tong University)

  • Yuanfeng Li

    (China University of Petroleum)

  • Hao Guo

    (China University of Petroleum)

  • Qiao Hu

    (Shanghai Jiao Tong University)

  • Jing Xiong

    (China University of Petroleum)

  • Yaxiao Ma

    (China University of Petroleum)

  • Peng Zhang

    (China University of Petroleum)

  • Xiaolin Yu

    (University of Science and Technology Beijing)

  • Xi Liu

    (Shanghai Jiao Tong University
    Ningxia University)

  • Yunpeng Liu

    (Chinese Academy of Sciences
    Chinese Academy of Sciences)

  • Zhen Zhao

    (China University of Petroleum)

  • Jianping Zou

    (Nanchang Hangkong University)

  • Yuechang Wei

    (China University of Petroleum)

Abstract

Simultaneous oxidation of soot and CH4 emitted from natural gas-diesel dual fuel engine is a new challenge. Herein, a robust catalyst of binary Ru-Pd components supported on three-dimensional ordered macro-mesoporous cerium-zirconium oxide (RuPd/3DOMM-CZO) is elaborately constructed. Ordered macro-mesopore structure in novel hierarchical porous cerium-zirconium oxide can respectively enhance mass transfer of soot and gaseous reactants, and binary Ru-Pd active components can improve activation for NO and CH4. RuPd/3DOMM-CZO catalyst exhibits excellent catalytic performance and stability during simultaneous soot and CH4 oxidation. Based on the results of characterizations and theoretical calculations, Ru site in binary Ru-Pd components is responsible for catalyzing NO oxidation to NO2, which is key step of NOx-assisted soot oxidation mechanism, while Pd site can activate the C-H bond of CH4 for boosting oxidation to CO2; the catalytic cooperation between Ru and Pd atoms can promote the rate-determining step to realize simultaneous oxidation of soot and CH4.

Suggested Citation

  • Linsheng Xu & Tian Qin & Yuanfeng Li & Hao Guo & Qiao Hu & Jing Xiong & Yaxiao Ma & Peng Zhang & Xiaolin Yu & Xi Liu & Yunpeng Liu & Zhen Zhao & Jianping Zou & Yuechang Wei, 2025. "Catalytic cooperation between Ru and Pd atoms on hierarchical porous Ce-based oxide for boosting engine exhaust purification," Nature Communications, Nature, vol. 16(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-63089-8
    DOI: 10.1038/s41467-025-63089-8
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