Research on the CO<sub>2</sub> adsorption performance and mechanism of hierarchically amine-modified MOF-74

XIAO Pianpian; ZHUO Chaoyue; ZHANG Yuefei; LI Ziyi; LUO Xiao; LIANG Zhiwu

doi:10.11949/0438-1157.20251032

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Research on the CO₂ adsorption performance and mechanism of hierarchically amine-modified MOF-74

Material science and engineering\, nanotechnology | 更新时间：2026-08-13

- Research on the CO₂ adsorption performance and mechanism of hierarchically amine-modified MOF-74
- CIESC Journal Vol. 77, Issue 6, Pages: 3663-3673(2026)
- 作者机构：
  
  1.长沙理工大学化学与医药工程学院，电力与交通材料保护湖南省重点实验室，湖南长沙 410114
  2.湖南大学化学化工学院，湖南长沙 410082
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20251032
  CLC： O 647.3
- Received：12 September 2025，
  
  Revised：2025-10-23，
  
  Online First：29 July 2026，
  
  Published：25 June 2026
- 稿件说明：
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肖翩翩, 卓超越, 张跃飞, 李子怡, 罗潇, 梁志武. 分级胺改性MOF-74的CO₂吸附性能及机理研究[J]. 化工学报, 2026, 77(6): 3663-3673 DOI: 10.11949/0438-1157.20251032.

XIAO Pianpian, ZHUO Chaoyue, ZHANG Yuefei, LI Ziyi, LUO Xiao, LIANG Zhiwu. Research on the CO₂ adsorption performance and mechanism of hierarchically amine-modified MOF-74[J]. CIESC Journal, 2026, 77(6): 3663-3673 DOI: 10.11949/0438-1157.20251032.
肖翩翩, 卓超越, 张跃飞, 李子怡, 罗潇, 梁志武. 分级胺改性MOF-74的CO₂吸附性能及机理研究[J]. 化工学报, 2026, 77(6): 3663-3673 DOI: 10.11949/0438-1157.20251032. DOI：

XIAO Pianpian, ZHUO Chaoyue, ZHANG Yuefei, LI Ziyi, LUO Xiao, LIANG Zhiwu. Research on the CO₂ adsorption performance and mechanism of hierarchically amine-modified MOF-74[J]. CIESC Journal, 2026, 77(6): 3663-3673 DOI: 10.11949/0438-1157.20251032. DOI：

摘要

提升金属有机框架材料（MOF-74）的CO

吸附容量与稳定性是碳捕集领域的关键挑战。研究制备了不同金属中心（Mg、Ni）和不同配体的MOF-74，并进行胺改性，筛选短链乙醇胺（MEA）、长链四亚乙基五胺（TEPA）及TEPA∶Py（1∶1）复合胺三类改性剂，并系统评价了CO

吸附性能。改性后材料性能显著提升：MEA、TEPA及TEPA∶Py（1∶1）分别将CO

吸附容量提升至原始MOF-74的1.4倍、1.9倍和5.0倍。五次吸附-脱附循环后，改性吸附剂保持

95%的初始容量，证实其优异的循环稳定性与空气稳定性。本研究揭示了胺改性可显著强化MOF-74的CO

捕集性能，但需控制负载量以避免过量胺引发的强碱性环境导致的性能衰减，为设计高效胺改性MOF吸附剂提供了理论依据与优化策略。

Abstract

Enhancing the CO

adsorption capacity and stability of metal-organic frameworks (MOFs) is crucial for advancing carbon capture technologies. In this study

MOF-74 with different metal centers (Mg/Ni) and organic ligands was synthesized and subsequently modified with amines. Three amine modifiers-short-chain monoethanolamine (MEA)

long-chain tetraethylenepentamine (TEPA)

and a composite amine system (TEPA∶Py=1∶1)—were screened and systematically evaluated for their influence on CO

adsorption performance. The modified materials markedly improved the CO

uptake: MEA

TEPA

and TEPA∶Py (1∶1) enhanced the adsorption capacity to 1.4

1.9

and 5.0 times that of the pristine MOF-74

respectively. Moreover

all amine-modified adsorbents retained

95% initial capacity after five adsorption-desorption cycles under ambient conditions

demonstrating excellent cyclic stability. This study reveals that amine modification can significantly enhance the CO

capture performance of MOF-74

but the loading rate needs to be controlled to avoid performance degradation caused by an overly alkaline environment induced by excessive amine. This provides a theoretical basis and optimization strategy for designing highly effi

cient amine-modified MOF adsorbents.

关键词

Keywords

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Research on the CO2 adsorption performance and mechanism of hierarchically amine-modified MOF-74

DOI：10.11949/0438-1157.20251032

摘要

Abstract

关键词

Keywords

references

Research on the CO₂ adsorption performance and mechanism of hierarchically amine-modified MOF-74