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Natural gas upgrading using a fluorinated MOF with tuned H2S and CO2 adsorption selectivity

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  • Youssef Belmabkhout

    (King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center, Functional Materials Design, Discovery & Development Research Group (FMD3))

  • Prashant M. Bhatt

    (King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center, Functional Materials Design, Discovery & Development Research Group (FMD3))

  • Karim Adil

    (King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center, Functional Materials Design, Discovery & Development Research Group (FMD3))

  • Renjith S. Pillai

    (Université Montpellier)

  • Amandine Cadiau

    (King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center, Functional Materials Design, Discovery & Development Research Group (FMD3))

  • Aleksander Shkurenko

    (King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center, Functional Materials Design, Discovery & Development Research Group (FMD3))

  • Guillaume Maurin

    (Université Montpellier)

  • Gongping Liu

    (Georgia Institute of Technology)

  • William J. Koros

    (Georgia Institute of Technology)

  • Mohamed Eddaoudi

    (King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center, Functional Materials Design, Discovery & Development Research Group (FMD3))

Abstract

The process used to upgrade natural gas, biogas and refinery-off-gas directly influences the cost of producing the fuel and often requires complex separation strategies and operational systems to remove contaminants such as hydrogen sulfide (H2S) and carbon dioxide (CO2). Here we report a fluorinated metal–organic framework (MOF), AlFFIVE-1-Ni, that allows simultaneous and equally selective removal of CO2 and H2S from CH4-rich streams in a single adsorption step. The simultaneous removal is possible for a wide range of H2S and CO2 compositions and concentrations of the gas feed. Pure component and mixed gas adsorption, single-crystal X-ray diffraction and molecular simulation studies were carried out to elucidate the mechanism governing the simultaneous adsorption of H2S and CO2. The results suggest that concurrent removal of CO2 and H2S is achieved via the integrated favourable sites for H2S and CO2 adsorption in a confined pore system. This approach offers the prospect of simplifying the complex schemes for removal of acid gases.

Suggested Citation

  • Youssef Belmabkhout & Prashant M. Bhatt & Karim Adil & Renjith S. Pillai & Amandine Cadiau & Aleksander Shkurenko & Guillaume Maurin & Gongping Liu & William J. Koros & Mohamed Eddaoudi, 2018. "Natural gas upgrading using a fluorinated MOF with tuned H2S and CO2 adsorption selectivity," Nature Energy, Nature, vol. 3(12), pages 1059-1066, December.
    • Handle: RePEc:nat:natene:v:3:y:2018:i:12:d:10.1038_s41560-018-0267-0
    DOI: 10.1038/s41560-018-0267-0
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    Cited by:

    1. 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.
    2. Xinming Xia & Feng Zhou & Jing Xu & Zhongteng Wang & Jian Lan & Yan Fan & Zhikun Wang & Wei Liu & Junlang Chen & Shangshen Feng & Yusong Tu & Yizhou Yang & Liang Chen & Haiping Fang, 2022. "Unexpectedly efficient ion desorption of graphene-based materials," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

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