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Hydrogen bond unlocking-driven pore structure control for shifting multi-component gas separation function

Author

Listed:
  • Rong Yang

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

  • Yu Wang

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

  • Jian-Wei Cao

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

  • Zi-Ming Ye

    (Fujian Normal University)

  • Tony Pham

    (University of South Florida)

  • Katherine A. Forrest

    (University of South Florida)

  • Rajamani Krishna

    (University of Amsterdam)

  • Hongwei Chen

    (Taiyuan University of Technology)

  • Libo Li

    (Taiyuan University of Technology)

  • Bo-Kai Ling

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

  • Tao Zhang

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

  • Tong Gao

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

  • Xue Jiang

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

  • Xiang-Ou Xu

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

  • Qian-Hao Ye

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

  • Kai-Jie Chen

    (School of Chemistry and Chemical Engineering, Northwestern Polytechnical University)

Abstract

Purification of ethylene (C2H4) as the most extensive and output chemical, from complex multi-components is of great significance but highly challenging. Herein we demonstrate that precise pore structure tuning by controlling the network hydrogen bonds in two highly-related porous coordination networks can shift the efficient C2H4 separation function from C2H2/C2H4/C2H6 ternary mixture to CO2/C2H2/C2H4/C2H6 quaternary mixture system. Single-crystal X-ray diffraction revealed that the different amino groups on the triazolate ligands resulted in the change of the hydrogen bonding in the host network, which led to changes in the pore shape and pore chemistry. Gas adsorption isotherms, adsorption kinetics and gas-loaded crystal structure analysis indicated that the coordination network Zn-fa-atz (2) weakened the affinity for three C2 hydrocarbons synchronously including C2H4 but enhanced the CO2 adsorption due to the optimized CO2-host interaction and the faster CO2 diffusion, leading to effective C2H4 production from the CO2/C2H2/C2H4/C2H6 mixture in one step based on the experimental and simulated breakthrough data. Moreover, it can be shaped into spherical pellets with maintained porosity and separation performance.

Suggested Citation

  • Rong Yang & Yu Wang & Jian-Wei Cao & Zi-Ming Ye & Tony Pham & Katherine A. Forrest & Rajamani Krishna & Hongwei Chen & Libo Li & Bo-Kai Ling & Tao Zhang & Tong Gao & Xue Jiang & Xiang-Ou Xu & Qian-Hao, 2024. "Hydrogen bond unlocking-driven pore structure control for shifting multi-component gas separation function," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45081-w
    DOI: 10.1038/s41467-024-45081-w
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    References listed on IDEAS

    as
    1. Simon Krause & Volodymyr Bon & Irena Senkovska & Ulrich Stoeck & Dirk Wallacher & Daniel M. Többens & Stefan Zander & Renjith S. Pillai & Guillaume Maurin & François-Xavier Coudert & Stefan Kaskel, 2016. "A pressure-amplifying framework material with negative gas adsorption transitions," Nature, Nature, vol. 532(7599), pages 348-352, April.
    2. Jian-Wei Cao & Soumya Mukherjee & Tony Pham & Yu Wang & Teng Wang & Tao Zhang & Xue Jiang & Hui-Juan Tang & Katherine A. Forrest & Brian Space & Michael J. Zaworotko & Kai-Jie Chen, 2021. "One-step ethylene production from a four-component gas mixture by a single physisorbent," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
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