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Topologically guided tuning of Zr-MOF pore structures for highly selective separation of C6 alkane isomers

Author

Listed:
  • Hao Wang

    (Rutgers University)

  • Xinglong Dong

    (King Abdullah University of Science and Technology)

  • Junzhong Lin

    (Peking University)

  • Simon J. Teat

    (Advanced Light Source, Lawrence Berkeley National Laboratory)

  • Stephanie Jensen

    (Wake Forest University)

  • Jeremy Cure

    (University of Texas at Dallas)

  • Eugeny V. Alexandrov

    (Samara University)

  • Qibin Xia

    (Rutgers University
    South China University of Technology)

  • Kui Tan

    (University of Texas at Dallas)

  • Qining Wang

    (Rutgers University)

  • David H. Olson

    (Rutgers University)

  • Davide M. Proserpio

    (Samara University
    Università degli Studi di Milano)

  • Yves J. Chabal

    (University of Texas at Dallas)

  • Timo Thonhauser

    (Wake Forest University
    Massachusetts Institute of Technology)

  • Junliang Sun

    (Peking University)

  • Yu Han

    (King Abdullah University of Science and Technology)

  • Jing Li

    (Rutgers University)

Abstract

As an alternative technology to energy intensive distillations, adsorptive separation by porous solids offers lower energy cost and higher efficiency. Herein we report a topology-directed design and synthesis of a series of Zr-based metal-organic frameworks with optimized pore structure for efficient separation of C6 alkane isomers, a critical step in the petroleum refining process to produce gasoline with high octane rating. Zr6O4(OH)4(bptc)3 adsorbs a large amount of n-hexane but excluding branched isomers. The n-hexane uptake is ~70% higher than that of a benchmark adsorbent, zeolite-5A. A derivative structure, Zr6O4(OH)8(H2O)4(abtc)2, is capable of discriminating all three C6 isomers and yielding a high separation factor for 3-methylpentane over 2,3-dimethylbutane. This property is critical for producing gasoline with further improved quality. Multicomponent breakthrough experiments provide a quantitative measure of the capability of these materials for separation of C6 alkane isomers. A detailed structural analysis reveals the unique topology, connectivity and relationship of these compounds.

Suggested Citation

  • Hao Wang & Xinglong Dong & Junzhong Lin & Simon J. Teat & Stephanie Jensen & Jeremy Cure & Eugeny V. Alexandrov & Qibin Xia & Kui Tan & Qining Wang & David H. Olson & Davide M. Proserpio & Yves J. Cha, 2018. "Topologically guided tuning of Zr-MOF pore structures for highly selective separation of C6 alkane isomers," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04152-5
    DOI: 10.1038/s41467-018-04152-5
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    Cited by:

    1. Peixin Zhang & Lifeng Yang & Xing Liu & Jun Wang & Xian Suo & Liyuan Chen & Xili Cui & Huabin Xing, 2022. "Ultramicroporous material based parallel and extended paraffin nano-trap for benchmark olefin purification," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. Sujing Wang & Hong Giang T. Ly & Mohammad Wahiduzzaman & Charlotte Simms & Iurii Dovgaliuk & Antoine Tissot & Guillaume Maurin & Tatjana N. Parac-Vogt & Christian Serre, 2022. "A zirconium metal-organic framework with SOC topological net for catalytic peptide bond hydrolysis," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    3. Qingju Wang & Lifeng Yang & Tian Ke & Jianbo Hu & Xian Suo & Xili Cui & Huabin Xing, 2024. "Selective sorting of hexane isomers by anion-functionalized metal-organic frameworks with optimal energy regulation," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    4. Xiaoyi Xu & Xinyu Wu & Kai Xu & Hong Xu & Hongzheng Chen & Ning Huang, 2023. "Pore partition in two-dimensional covalent organic frameworks," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    5. Masood S. Alivand & Omid Mazaheri & Yue Wu & Ali Zavabeti & Andrew J. Christofferson & Nastaran Meftahi & Salvy P. Russo & Geoffrey W. Stevens & Colin A. Scholes & Kathryn A. Mumford, 2022. "Engineered assembly of water-dispersible nanocatalysts enables low-cost and green CO2 capture," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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