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A robust Th-azole framework for highly efficient purification of C2H4 from a C2H4/C2H2/C2H6 mixture

Author

Listed:
  • Zhenzhen Xu

    (East China University of Technology)

  • Xiaohong Xiong

    (East China University of Technology)

  • Jianbo Xiong

    (East China University of Technology)

  • Rajamani Krishna

    (University of Amsterdam)

  • Libo Li

    (Taiyuan University of Technology)

  • Yaling Fan

    (East China University of Technology)

  • Feng Luo

    (East China University of Technology)

  • Banglin Chen

    (University of Texas at San Antonio)

Abstract

Separation of C2H4 from C2H4/C2H2/C2H6 mixture with high working capacity is still a challenging task. Herein, we deliberately design a Th-metal-organic framework (MOF) for highly efficient separation of C2H4 from a binary C2H6/C2H4 and ternary C2H4/C2H2/C2H6 mixture. The synthesized MOF Azole-Th-1 shows a UiO-66-type structure with fcu topology built on a Th6 secondary building unit and a tetrazole-based linker. Such noticeable structure, is connected by a N,O-donor ligand with high chemical stability. At 100 kPa and 298 K Azole-Th-1 performs excellent separation of C2H4 (purity > 99.9%) from not only a binary C2H6/C2H4 (1:9, v/v) mixture but also a ternary mixture of C2H6/C2H2/C2H4 (9:1:90, v/v/v), and the corresponding working capacity can reach up to 1.13 and 1.34 mmol g−1, respectively. The separation mechanism, as unveiled by the density functional theory calculation, is due to a stronger van der Waals interaction between ethane and the MOF skeleton.

Suggested Citation

  • Zhenzhen Xu & Xiaohong Xiong & Jianbo Xiong & Rajamani Krishna & Libo Li & Yaling Fan & Feng Luo & Banglin Chen, 2020. "A robust Th-azole framework for highly efficient purification of C2H4 from a C2H4/C2H2/C2H6 mixture," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16960-9
    DOI: 10.1038/s41467-020-16960-9
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