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High-efficiency and low-energy-consumption CO2 capture through phase transition optimization via proton-lock mechanism.

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Title: High-efficiency and low-energy-consumption CO2 capture through phase transition optimization via proton-lock mechanism.
Authors: Meng, Haoyu1 (AUTHOR), Jiang, Bin1 (AUTHOR), Yang, Jiahao1 (AUTHOR), Chen, Meisi2 (AUTHOR), Zhang, Feng1 (AUTHOR) zf@nju.edu.cn, Zhang, Zhibing1,3 (AUTHOR) zbzhang@nju.edu.cn
Source: Chemical Engineering Journal. Sep2025, Vol. 519, pN.PAG-N.PAG. 1p.
Subjects: Carbon sequestration, Phase transitions, Carbon dioxide, Energy consumption, Ionic liquids
Abstract: A novel proton-lock mechanism was developed for CO₂ capture, utilizing a phase-transition process in a biphasic system. The mechanism integrates a protic ionic liquid (PIL) with a proton inhibitor (N , N , N ′, N ′-tetramethyl-1,6-hexanediamine, TMHDA), which facilitates the formation of stable bicarbonate species (80.28%) during CO 2 absorption. This approach significantly reduces regeneration energy consumption by nearly 48% compared to traditional monoethanolamine (MEA) solutions, with an energy demand of 1.785 GJ/t CO₂. The proton-lock mechanism effectively minimizes heat consumption and enhances the efficiency of the CO 2 absorption-regeneration cycle, making it a promising solution for large-scale industrial applications. By reducing the energy intensity typically associated with CO 2 capture, this innovative mechanism directly addresses both the environmental and energy challenges posed by conventional absorbents, contributing to more sustainable and energy-efficient carbon capture technologies. • The synergistic effect of TPH at the phase interface enhances CO 2 capture. • A novel proton-lock mechanism was proposed. • The PTH system exhibits significantly higher regeneration efficiency and lower energy consumption. [ABSTRACT FROM AUTHOR]
Copyright of Chemical Engineering Journal 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 186812405
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: High-efficiency and low-energy-consumption CO2 capture through phase transition optimization via proton-lock mechanism.
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  Data: <searchLink fieldCode="AR" term="%22Meng%2C+Haoyu%22">Meng, Haoyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Bin%22">Jiang, Bin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Jiahao%22">Yang, Jiahao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Meisi%22">Chen, Meisi</searchLink><relatesTo>2</relatesTo> (AUTHOR)<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="%22Chemical+Engineering+Journal%22">Chemical Engineering Journal</searchLink>. Sep2025, Vol. 519, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Carbon+sequestration%22">Carbon sequestration</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+consumption%22">Energy consumption</searchLink><br /><searchLink fieldCode="DE" term="%22Ionic+liquids%22">Ionic liquids</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A novel proton-lock mechanism was developed for CO₂ capture, utilizing a phase-transition process in a biphasic system. The mechanism integrates a protic ionic liquid (PIL) with a proton inhibitor (N , N , N ′, N ′-tetramethyl-1,6-hexanediamine, TMHDA), which facilitates the formation of stable bicarbonate species (80.28%) during CO 2 absorption. This approach significantly reduces regeneration energy consumption by nearly 48% compared to traditional monoethanolamine (MEA) solutions, with an energy demand of 1.785 GJ/t CO₂. The proton-lock mechanism effectively minimizes heat consumption and enhances the efficiency of the CO 2 absorption-regeneration cycle, making it a promising solution for large-scale industrial applications. By reducing the energy intensity typically associated with CO 2 capture, this innovative mechanism directly addresses both the environmental and energy challenges posed by conventional absorbents, contributing to more sustainable and energy-efficient carbon capture technologies. • The synergistic effect of TPH at the phase interface enhances CO 2 capture. • A novel proton-lock mechanism was proposed. • The PTH system exhibits significantly higher regeneration efficiency and lower energy consumption. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chemical Engineering Journal 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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    Identifiers:
      – Type: doi
        Value: 10.1016/j.cej.2025.165658
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Carbon sequestration
        Type: general
      – SubjectFull: Phase transitions
        Type: general
      – SubjectFull: Carbon dioxide
        Type: general
      – SubjectFull: Energy consumption
        Type: general
      – SubjectFull: Ionic liquids
        Type: general
    Titles:
      – TitleFull: High-efficiency and low-energy-consumption CO2 capture through phase transition optimization via proton-lock mechanism.
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            NameFull: Meng, Haoyu
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            NameFull: Jiang, Bin
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            NameFull: Yang, Jiahao
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            NameFull: Chen, Meisi
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            NameFull: Zhang, Feng
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            – D: 01
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
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              Value: 519
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            – TitleFull: Chemical Engineering Journal
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