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Efficient separation of butane isomers via ZIF-8 slurry on laboratory- and pilot-scale

Author

Listed:
  • Mingke Yang

    (China University of Petroleum)

  • Huishan Wang

    (China University of Petroleum)

  • Julian Y. Zuo

    (FMG Inc.)

  • Chun Deng

    (China University of Petroleum)

  • Bei Liu

    (China University of Petroleum)

  • Liya Chai

    (China University of Petroleum)

  • Kun Li

    (China University of Petroleum)

  • Han Xiao

    (China University of Petroleum
    CenerTech Tianjin Chemical Research and Design Institue Co., Ltd.)

  • Peng Xiao

    (China University of Petroleum)

  • Xiaohui Wang

    (China University of Petroleum)

  • Wan Chen

    (China University of Petroleum)

  • Xiaowan Peng

    (China University of Petroleum)

  • Yu Han

    (China University of Petroleum)

  • Zixuan Huang

    (China University of Petroleum)

  • Baocan Dong

    (China University of Petroleum)

  • Changyu Sun

    (China University of Petroleum)

  • Guangjin Chen

    (China University of Petroleum)

Abstract

n-butane and isobutane are important petrochemical raw materials. Their separation is challenging because of their similar properties, including boiling point. Here, we report a zeolitic imidazolate framework-8 (ZIF-8)/N,N-Dimethylpropyleneurea (DMPU)-water slurry as sorption material to separate butane mixtures. The isobutane/n-butane selectivity of ZIF-8/DMPU-water slurries is as high as 890 with high kinetic performance, which transcends the upper limit of various separation materials or membranes reported in the literature. More encouragingly, a continuous pilot separation device was established, and the test results show that the purity and recovery ratio of isobutane product are 99.46 mol% and 87%, respectively, which are superior to the corresponding performance (98.56 mol% and 54%) of the industrial distillation tower. To the best of our knowledge, the use of metal-organic frameworks (MOFs) for gas separation in pilot scale remains underexplored, and thus this work provides a step forward to the commercial application of MOFs in gas separation.

Suggested Citation

  • Mingke Yang & Huishan Wang & Julian Y. Zuo & Chun Deng & Bei Liu & Liya Chai & Kun Li & Han Xiao & Peng Xiao & Xiaohui Wang & Wan Chen & Xiaowan Peng & Yu Han & Zixuan Huang & Baocan Dong & Changyu Su, 2022. "Efficient separation of butane isomers via ZIF-8 slurry on laboratory- and pilot-scale," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32418-6
    DOI: 10.1038/s41467-022-32418-6
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