近日，南开大学张振杰团队研究了烯烃连接的非晶态共轭微孔聚合物的千克级通量合成，用于C₂H₂/CO₂分离。这一研究成果发表在2025年12月22日出版的《中国高分子科学杂志》上。

共轭微孔聚合物因其永久性微孔结构、高吸附容量和优异的化学稳定性，在气体分离领域展现出显著潜力。然而，与高能耗的传统溶剂热法相比，如何实现可规模化、成本效益高且环境友好的CMPs合成方法仍待深入探索。

研究组提出一种无溶剂的助熔剂合成法，通过2,3,5,6-四甲基吡嗪与线性芳香醛的克脑文格尔缩合反应，成功构建了烯烃连接的无定形共轭微孔聚合物（NKCMP-1与NKCMP-2）。该方法在可扩展性与产物均一性方面优于离子热法和机械化学法。值得注意的是，NKCMP-1可在保持结构完整性、高比表面积和均匀微孔结构的前提下实现千克级合成（0.54千克）。动态穿透实验证实，两种材料在常温条件下均表现出优异的乙炔/二氧化碳选择性和循环稳定性。这些特性使得所开发的CMPs在实际工业气体纯化应用中具有广阔前景。

附：英文原文

Title: Kilogram-scale Flux Synthesis of Olefin-linked Amorphous Conjugated Microporous Polymers toward C₂H₂/CO₂ Separation

Author: Yu-Shu Zhang, Kai-Yuan Wang, Li-Qin Hao, Ji-Xian Wang, Meng-Jin Wang, Yao Chen, Peng Cheng, Xia Li, Zhen-Jie Zhang

Issue&Volume: 2025-12-22

Abstract: Conjugated microporous polymers (CMPs) have demonstrated significant potential for gas separation due to their permanent microporosity, high adsorption capacity, and exceptional chemical robustness. However, the scalable, cost-effective and environmentally friendly synthesis of CMPs as an alternative to energy-intensive traditional solvothermal methods remains underexplored. Herein, we present a solvent-free, flux synthesis method for constructing olefin-linked amorphous CMPs (NKCMP-1 and NKCMP-2) through Knoevenagel condensation of 2,3,5,6-tetramethylpyrazine with linear aromatic aldehydes. This method surpasses ionothermal and mechanochemical routes in terms of scalability and product uniformity. Notably, NKCMP-1 can be synthesized on a kilogram scale (0.54 kg) while maintaining structural integrity, high surface area and a uniform microporous architecture. Both NKCMP-1 and NKCMP-2 exhibit outstanding C2H2/CO2 selectivity and cyclic stability under ambient conditions, as confirmed by dynamic breakthrough experiments. These features make the developed CMPs highly promising for real-world industrial gas purification applications.

DOI: 10.1007/s10118-025-3437-0

Source: https://www.cjps.org/en/article/doi/10.1007/s10118-025-3437-0/