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Oxidation-stable amine-containing adsorbents for carbon dioxide capture

Author

Listed:
  • Kyungmin Min

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Woosung Choi

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Chaehoon Kim

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Minkee Choi

    (Korea Advanced Institute of Science and Technology (KAIST))

Abstract

Amine-containing solids have been investigated as promising adsorbents for CO2 capture, but the low oxidative stability of amines has been the biggest hurdle for their practical applications. Here, we developed an extra-stable adsorbent by combining two strategies. First, poly(ethyleneimine) (PEI) was functionalized with 1,2-epoxybutane, which generates tethered 2-hydroxybutyl groups. Second, chelators were pre-supported onto a silica support to poison p.p.m.-level metal impurities (Fe and Cu) that catalyse amine oxidation. The combination of these strategies led to remarkable synergy, and the resultant adsorbent showed a minor loss of CO2 working capacity (8.5%) even after 30 days aging in O2-containing flue gas at 110 °C. This corresponds to a ~50 times slower deactivation rate than a conventional PEI/silica, which shows a complete loss of CO2 uptake capacity after the same treatment. The unprecedentedly high oxidative stability may represent an important breakthrough for the commercial implementation of these adsorbents.

Suggested Citation

  • Kyungmin Min & Woosung Choi & Chaehoon Kim & Minkee Choi, 2018. "Oxidation-stable amine-containing adsorbents for carbon dioxide capture," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03123-0
    DOI: 10.1038/s41467-018-03123-0
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    Cited by:

    1. Hu, Xiayi (Eric) & Liu, Libin & Luo, Xiao & Xiao, Gongkui & Shiko, Elenica & Zhang, Rui & Fan, Xianfeng & Zhou, Yefeng & Liu, Yang & Zeng, Zhaogang & Li, Chao'en, 2020. "A review of N-functionalized solid adsorbents for post-combustion CO2 capture," Applied Energy, Elsevier, vol. 260(C).
    2. Gao, Jubao & Liu, Yida & Hoshino, Yu & Inoue, Gen, 2019. "Amine-containing nanogel particles supported on porous carriers for enhanced carbon dioxide capture," Applied Energy, Elsevier, vol. 253(C), pages 1-1.
    3. Yang, Chuanruo & Du, Zhilin & Jin, Junsu & Chen, Jian & Mi, Jianguo, 2020. "Epoxide-functionalized tetraethylenepentamine encapsulated into porous copolymer spheres for CO2 capture with superior stability," Applied Energy, Elsevier, vol. 260(C).
    4. Sirinapa Wongwilawan & Thien S. Nguyen & Thi Phuong Nga Nguyen & Abdulhadi Alhaji & Wonki Lim & Yeongran Hong & Jin Su Park & Mert Atilhan & Bumjoon J. Kim & Mohamed Eddaoudi & Cafer T. Yavuz, 2023. "Non-solvent post-modifications with volatile reagents for remarkably porous ketone functionalized polymers of intrinsic microporosity," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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