Forced degradation of AEEA under full CO2 loading, high temperature and high O2 partial pressure conditions: Degradation reaction pathway and degradation inhibitor studies.
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| Title: | Forced degradation of AEEA under full CO2 loading, high temperature and high O2 partial pressure conditions: Degradation reaction pathway and degradation inhibitor studies. |
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| Authors: | Lu, Shijian1,2,3 (AUTHOR) lushijian88@163.com, Ma, Yanhui1,2,3 (AUTHOR), Kang, Guojun1,2,3 (AUTHOR), Liu, Ling1,2,3 (AUTHOR) liuling@cumt.edu.cn, Luo, Yimeng1,2,3 (AUTHOR), Mei, Jieqiong1,2,3 (AUTHOR), Sun, Mengyuan1,2,3 (AUTHOR), Zhu, Wenju1,2,3 (AUTHOR), Yang, Fei1,2,3 (AUTHOR), Huang, Zhigang1,2,3 (AUTHOR) |
| Source: | Separation & Purification Technology. Aug2025:Part 1, Vol. 363, pN.PAG-N.PAG. 1p. |
| Subjects: | Carbon sequestration, Partial pressure, Carbon dioxide, Free radicals, High temperatures, Thymol |
| Abstract: | Organic amine absorbents are susceptible to degradation during the CO 2 capture process, resulting in the loss of amine absorbents and increased trapping costs. Compared with traditional MEA absorbents, AEEA has the advantages of high CO 2 absorption capacity and good cyclic stability. However, studies on the degradation of AEEA and AEEA-based absorbents are limited. Phenolic and oligosaccharide macromolecules with active hydroxyl groups were used as degradation inhibitors in AEEA systems, and forced degradation experiments were carried out for AEEA. The CO 2 trapping performance, amine degradation rate, and physicochemical properties of AEEA with degradation time were investigated at high temperatures and high O 2 partial pressures. Changes in the types and contents of possible degradation products were analysed, and possible pathways for degradation products and mechanisms of action for degradation inhibitors were speculated. Compared with the blank sample, the addition of 0.1 vt% thymol significantly increased the AEEA concentration, and the CO 2 absorption and desorption capacities increased by a maximum of 188.82 % and 70.15 %, respectively. 1-(2-Hydroxyethyl)-2-imidazolidinone (HEIA) and 2,5-piperidinedion were the main degradation products of AEEA before and after the addition of degradation inhibitors. The joint action of phenolic hydroxyl ortho- and para-substituents renders the H of OH bonds on thymol susceptible to detachment. This enhances the capacity of thymol to capture reactive free radicals, including peroxide free radicals, within a solution. The objectives are to terminate the AEEA automatic oxidation chain reaction, and inhibit AEEA degradation, thereby providing strong technical support for the wide application of AEEA. [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.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 183572995 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Forced degradation of AEEA under full CO2 loading, high temperature and high O2 partial pressure conditions: Degradation reaction pathway and degradation inhibitor studies. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lu%2C+Shijian%22">Lu, Shijian</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> lushijian88@163.com</i><br /><searchLink fieldCode="AR" term="%22Ma%2C+Yanhui%22">Ma, Yanhui</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kang%2C+Guojun%22">Kang, Guojun</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Ling%22">Liu, Ling</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> liuling@cumt.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Luo%2C+Yimeng%22">Luo, Yimeng</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mei%2C+Jieqiong%22">Mei, Jieqiong</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Mengyuan%22">Sun, Mengyuan</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Wenju%22">Zhu, Wenju</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Fei%22">Yang, Fei</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Zhigang%22">Huang, Zhigang</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Separation+%26+Purification+Technology%22">Separation & Purification Technology</searchLink>. Aug2025:Part 1, Vol. 363, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Carbon+sequestration%22">Carbon sequestration</searchLink><br /><searchLink fieldCode="DE" term="%22Partial+pressure%22">Partial pressure</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Free+radicals%22">Free radicals</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Thymol%22">Thymol</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Organic amine absorbents are susceptible to degradation during the CO 2 capture process, resulting in the loss of amine absorbents and increased trapping costs. Compared with traditional MEA absorbents, AEEA has the advantages of high CO 2 absorption capacity and good cyclic stability. However, studies on the degradation of AEEA and AEEA-based absorbents are limited. Phenolic and oligosaccharide macromolecules with active hydroxyl groups were used as degradation inhibitors in AEEA systems, and forced degradation experiments were carried out for AEEA. The CO 2 trapping performance, amine degradation rate, and physicochemical properties of AEEA with degradation time were investigated at high temperatures and high O 2 partial pressures. Changes in the types and contents of possible degradation products were analysed, and possible pathways for degradation products and mechanisms of action for degradation inhibitors were speculated. Compared with the blank sample, the addition of 0.1 vt% thymol significantly increased the AEEA concentration, and the CO 2 absorption and desorption capacities increased by a maximum of 188.82 % and 70.15 %, respectively. 1-(2-Hydroxyethyl)-2-imidazolidinone (HEIA) and 2,5-piperidinedion were the main degradation products of AEEA before and after the addition of degradation inhibitors. The joint action of phenolic hydroxyl ortho- and para-substituents renders the H of OH bonds on thymol susceptible to detachment. This enhances the capacity of thymol to capture reactive free radicals, including peroxide free radicals, within a solution. The objectives are to terminate the AEEA automatic oxidation chain reaction, and inhibit AEEA degradation, thereby providing strong technical support for the wide application of AEEA. [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: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.seppur.2025.132010 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Carbon sequestration Type: general – SubjectFull: Partial pressure Type: general – SubjectFull: Carbon dioxide Type: general – SubjectFull: Free radicals Type: general – SubjectFull: High temperatures Type: general – SubjectFull: Thymol Type: general Titles: – TitleFull: Forced degradation of AEEA under full CO2 loading, high temperature and high O2 partial pressure conditions: Degradation reaction pathway and degradation inhibitor studies. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lu, Shijian – PersonEntity: Name: NameFull: Ma, Yanhui – PersonEntity: Name: NameFull: Kang, Guojun – PersonEntity: Name: NameFull: Liu, Ling – PersonEntity: Name: NameFull: Luo, Yimeng – PersonEntity: Name: NameFull: Mei, Jieqiong – PersonEntity: Name: NameFull: Sun, Mengyuan – PersonEntity: Name: NameFull: Zhu, Wenju – PersonEntity: Name: NameFull: Yang, Fei – PersonEntity: Name: NameFull: Huang, Zhigang IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 08 Text: Aug2025:Part 1 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 13835866 Numbering: – Type: volume Value: 363 Titles: – TitleFull: Separation & Purification Technology Type: main |
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