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Isolating contiguous Pt atoms and forming Pt-Zn intermetallic nanoparticles to regulate selectivity in 4-nitrophenylacetylene hydrogenation

Author

Listed:
  • Aijuan Han

    (Beijing University of Chemical Technology
    Tsinghua University)

  • Jian Zhang

    (Tsinghua University)

  • Wenming Sun

    (China Agricultural University)

  • Wenxing Chen

    (Tsinghua University
    Beijing Institute of Technology)

  • Shaolong Zhang

    (Tsinghua University)

  • Yunhu Han

    (Tsinghua University)

  • Quanchen Feng

    (Tsinghua University)

  • Lirong Zheng

    (Chinese Academy of Sciences)

  • Lin Gu

    (Chinese Academy of Sciences)

  • Chen Chen

    (Tsinghua University)

  • Qing Peng

    (Tsinghua University)

  • Dingsheng Wang

    (Tsinghua University)

  • Yadong Li

    (Tsinghua University)

Abstract

Noble metals play a momentous role in heterogeneous catalysis but still face a huge challenge in selectivity control. Herein, we report isolating contiguous Pt atoms and forming Pt-Zn intermetallic nanoparticles as an effective strategy to optimize the selectivity of Pt catalysts. Contiguous Pt atoms are isolated into single atoms and Pt-Zn intermetallic nanoparticles are formed which are supported on hollow nitrogen-doped carbon nanotubes (PtZn/HNCNT), as confirmed by aberration-corrected high-resolution transmission electron microscopy and X-ray absorption spectrometry measurements. Interestingly, this PtZn/HNCNT catalyst promotes the hydrogenation of 4-nitrophenylacetylene to 4-aminophenylacetylene with a much higher conversion ( > 99%) and selectivity (99%) than the comparison samples with Pt isolated-single-atomic-sites (Pt/HNCNT) and Pt nanoparticles (Pt/CN). Further density functional theory (DFT) calculations disclose that the positive Zn atoms assist the adsorption of nitro group and Pt-Zn intermetallic nanoparticles facilitate the hydrogenation on nitro group kinetically.

Suggested Citation

  • Aijuan Han & Jian Zhang & Wenming Sun & Wenxing Chen & Shaolong Zhang & Yunhu Han & Quanchen Feng & Lirong Zheng & Lin Gu & Chen Chen & Qing Peng & Dingsheng Wang & Yadong Li, 2019. "Isolating contiguous Pt atoms and forming Pt-Zn intermetallic nanoparticles to regulate selectivity in 4-nitrophenylacetylene hydrogenation," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11794-6
    DOI: 10.1038/s41467-019-11794-6
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    Cited by:

    1. Wei Liu & Haisong Feng & Yusen Yang & Yiming Niu & Lei Wang & Pan Yin & Song Hong & Bingsen Zhang & Xin Zhang & Min Wei, 2022. "Highly-efficient RuNi single-atom alloy catalysts toward chemoselective hydrogenation of nitroarenes," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    2. Xiaohu Ge & Mingying Dou & Yueqiang Cao & Xi Liu & Qiang Yuwen & Jing Zhang & Gang Qian & Xueqing Gong & Xinggui Zhou & Liwei Chen & Weikang Yuan & Xuezhi Duan, 2022. "Mechanism driven design of trimer Ni1Sb2 site delivering superior hydrogenation selectivity to ethylene," Nature Communications, Nature, vol. 13(1), pages 1-13, December.

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