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Proton-Transfer-Activated polyamine for highly efficient CO2 capture.

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Title: Proton-Transfer-Activated polyamine for highly efficient CO2 capture.
Authors: Jiang, Bin1 (AUTHOR), Meng, Haoyu1 (AUTHOR), You, Chuan1 (AUTHOR), Dai, Hongyan1 (AUTHOR), Chen, Meisi1,2 (AUTHOR) chenmeisi1995@163.com, Zhang, Feng1 (AUTHOR) zf@nju.edu.cn, Zhang, Zhibing1,3 (AUTHOR) zbzhang@nju.edu.cn
Source: Separation & Purification Technology. Dec2025:Part 1, Vol. 378, pN.PAG-N.PAG. 1p.
Subjects: Polyamines, Carbon sequestration, Sorbents, Proton transfer reactions, Zwitterions, Thermal analysis, Energy consumption
Abstract: • Develop a proton-activated absorbent (abbreviated as PTTH) to enhance polyamine-based CO 2 capture via proton transfer. • Achieve a high CO 2 loading of 4.10 mol/kg, along with significantly enhanced absorption rate and amine utilization. • Reveal the proton transfer activation mechanism via zwitterionic intermediates using spectroscopy and quantum calculations. • Reduce regeneration energy to 2.08 GJ/t CO 2 , 45% lower than that of 30% MEA solution. Due to the presence of multiple amine groups in its molecular structure, the polyamine possesses a theoretically high CO 2 loading capacity. However, its high viscosity and low amine site utilization limit both its absorption efficiency and industrial applicability. In this study, a novel proton-activated absorbent system (composed of protic ionic liquids (PILs), triethylenetetramine (TETA) and H 2 O, abbreviated as PTTH) was developed to enhance the CO 2 capture performance of polyamine through proton transfer activation of its amine groups. The results demonstrate that PTTH achieves a high CO 2 loading capacity of 4.10 mol/kg (50 % absorbent concentration) while enhancing the absorption rate by a factor of 3.46. Spectroscopic analyses and quantum chemical calculations reveal that PILs capture CO 2 to form zwitterions, which subsequently transfer protons to the amine groups of the polyamine, effectively activating amino groups and enhancing CO 2 capture. Thermodynamic calculations further show that the regeneration energy consumption of PTTH is only 2.08 GJ/tCO 2 , merely 55 % of that required for the 30 % MEA aqueous solution. This study provides a new insight into the design of high-capacity, high-efficiency, and low-energy- consumption polyamine-based CO 2 absorbents. [ABSTRACT FROM AUTHOR]
Copyright of Separation & Purification Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 188445044
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PubTypeId: academicJournal
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  Data: Proton-Transfer-Activated polyamine for highly efficient CO2 capture.
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  Data: <searchLink fieldCode="AR" term="%22Jiang%2C+Bin%22">Jiang, Bin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Meng%2C+Haoyu%22">Meng, Haoyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22You%2C+Chuan%22">You, Chuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dai%2C+Hongyan%22">Dai, Hongyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Meisi%22">Chen, Meisi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> chenmeisi1995@163.com</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Feng%22">Zhang, Feng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zf@nju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zhibing%22">Zhang, Zhibing</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> zbzhang@nju.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Separation+%26+Purification+Technology%22">Separation & Purification Technology</searchLink>. Dec2025:Part 1, Vol. 378, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Polyamines%22">Polyamines</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+sequestration%22">Carbon sequestration</searchLink><br /><searchLink fieldCode="DE" term="%22Sorbents%22">Sorbents</searchLink><br /><searchLink fieldCode="DE" term="%22Proton+transfer+reactions%22">Proton transfer reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Zwitterions%22">Zwitterions</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+analysis%22">Thermal analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+consumption%22">Energy consumption</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Develop a proton-activated absorbent (abbreviated as PTTH) to enhance polyamine-based CO 2 capture via proton transfer. • Achieve a high CO 2 loading of 4.10 mol/kg, along with significantly enhanced absorption rate and amine utilization. • Reveal the proton transfer activation mechanism via zwitterionic intermediates using spectroscopy and quantum calculations. • Reduce regeneration energy to 2.08 GJ/t CO 2 , 45% lower than that of 30% MEA solution. Due to the presence of multiple amine groups in its molecular structure, the polyamine possesses a theoretically high CO 2 loading capacity. However, its high viscosity and low amine site utilization limit both its absorption efficiency and industrial applicability. In this study, a novel proton-activated absorbent system (composed of protic ionic liquids (PILs), triethylenetetramine (TETA) and H 2 O, abbreviated as PTTH) was developed to enhance the CO 2 capture performance of polyamine through proton transfer activation of its amine groups. The results demonstrate that PTTH achieves a high CO 2 loading capacity of 4.10 mol/kg (50 % absorbent concentration) while enhancing the absorption rate by a factor of 3.46. Spectroscopic analyses and quantum chemical calculations reveal that PILs capture CO 2 to form zwitterions, which subsequently transfer protons to the amine groups of the polyamine, effectively activating amino groups and enhancing CO 2 capture. Thermodynamic calculations further show that the regeneration energy consumption of PTTH is only 2.08 GJ/tCO 2 , merely 55 % of that required for the 30 % MEA aqueous solution. This study provides a new insight into the design of high-capacity, high-efficiency, and low-energy- consumption polyamine-based CO 2 absorbents. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Separation & Purification Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.seppur.2025.134459
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Polyamines
        Type: general
      – SubjectFull: Carbon sequestration
        Type: general
      – SubjectFull: Sorbents
        Type: general
      – SubjectFull: Proton transfer reactions
        Type: general
      – SubjectFull: Zwitterions
        Type: general
      – SubjectFull: Thermal analysis
        Type: general
      – SubjectFull: Energy consumption
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    Titles:
      – TitleFull: Proton-Transfer-Activated polyamine for highly efficient CO2 capture.
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            NameFull: Jiang, Bin
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            NameFull: Meng, Haoyu
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            – D: 30
              M: 12
              Text: Dec2025:Part 1
              Type: published
              Y: 2025
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              Value: 378
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