近日，清华大学卢元团队研究了推进CO₂捕集的微孔材料的多维分析。2026年3月17日，《颗粒学报》杂志发表了这一成果。

大气CO₂浓度持续攀升亟需先进的碳捕获解决方案，然而开发兼具高稳定性与高选择性的CO₂吸附剂仍是重大挑战。微孔材料主要通过基于孔隙结构和范德华力的物理吸附捕获CO₂。

研究组合成了三种硅铝沸石分子筛材料，并通过聚乙二醇后合成配位修饰实现了ZIF-8的亲水改性，系统比较了不同条件下各材料的CO₂吸附性能。沸石材料展现出优异的热稳定性（空气气氛25-800℃失重<5%）和循环稳定性（多次循环后吸附容量保持率>95%），优于ZIF-8类似物。85 nm沸石在25℃时实现最佳CO₂吸附量（1.8 mmol g^-1），ZIF-8表现出最佳耐湿性（80%相对湿度下吸附量下降40%），而ZSM-5的强化气体保留时间达1498秒，显示出更优的CO₂吸附亲和力。

这些结果证实了沸石材料优异的热稳定性和循环稳定性。该研究为未来材料设计提供了可行性指导：1）在需要长期循环稳定性和热稳定性的场景中优先选择沸石基框架材料；2）优化孔径和表面性质以平衡吸附容量与选择性；3）开发针对烟气中SO₂竞争吸附的抗中毒改性策略。

附：英文原文

Title: A multi-dimensional analysis of microporous materials for advancing CO2 capture

Author: Yuan Lu a b

Issue&Volume: 2026/03/17

Abstract: The escalating atmospheric CO2 concentration calls for advanced carbon capture solutions. However, developing a stable and efficient adsorbent with high selectivity for CO2 capture remains a significant challenge. Microporous materials capture CO2 primarily through physisorption based on pore structure and van der Waals forces. In this study, three silicon-aluminum zeolite molecular sieve materials were synthesized and hydrophilic modification of ZIF-8 was achieved through post-synthetic coordination with polyethylene glycol. A systematic comparison of the CO2 adsorption performance of these materials under different conditions was then conducted. Zeolites exhibited exceptional thermal stability (< 5% mass loss from 25-800 °C under an air atmosphere) and cyclability (retaining > 95% of initial adsorption capacity throughout cycling), outperforming ZIF-8 analogues. 85-nm zeolite achieved the optimal CO2 uptake (1.8 mmol g-1) at 25 °C and ZIF-8 showed the best humidity resistance (40% decrease at 80% RH). Additionally, ZSM-5 exhibited enhanced gas retention of 1498 s, indicating superior CO2 adsorption affinity. These results demonstrate the excellent thermal stability and cycling stability of the zeolite materials. This study provides actionable insights for future material design: 1) prioritizing zeolite-based frameworks for scenarios requiring long-term cyclic stability and thermal robustness; 2) optimizing pore size and surface properties to balance adsorption capacity and selectivity; 3) developing anti-poisoning modifications targeting SO2 competitive adsorption in flue gas.

DOI: 10.1016/j.partic.2026.03.004

Source: https://www.sciencedirect.com/science/article/abs/pii/S167420012600101X