A new perchlorate-based hybrid ultramicroporous material with rich bare oxygen atoms for high C2H2/CO2 separation
A new perchlorate-based hybrid ultramicroporous material with rich bare oxygen atoms for high C2H2/CO2 separation
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DOI：
10.1016/j.cclet.2022.108039
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发表时间：
2023-06-09
影响因子：
9.1
通讯作者：
Zhang, Ling
中科院分区：
文献类型：
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作者：
Jiang, Ke;Gao, Yuntian;Zhang, Ling
乙炔（c2h 2）和二氧化碳（CO 2）的吸附分离在石油化工中具有重要意义，但由于其分子大小/形状和物理性质非常相似，仍然是一个艰巨的挑战。在这里，我们报道了一种新的高氯酸盐基杂化超微孔材料ZJU-194，它具有独特的柔性-坚固的网络，由丰富的裸氧原子装饰。通过整合精细的孔隙空间和特定的结合位点，活化的ZJU-194 （ZJU194a）能够选择性地对c2h 2进行两步开门吸附，但阻止进一步吸收CO 2。因此，它在环境条件下表现出非常高的c2h2 /CO 2选择性（22.4），这优于大多数报道的MOF材料。动态突破实验进一步证明了它对50/50的c2h2 / co2混合物的完全分离。&副本;2023由Elsevier B.V.代表中国化学学会和中国医学科学院药物研究所出版。
Adsorptive separation of acetylene (C 2 H 2 ) from carbon dioxide (CO 2 ) is of great significance in petrochemical industry, but still remains as a daunting challenge by reason of their very similar molecular sizes/shapes and physical properties. Herein, we reported a new perchlorate-based hybrid ultramicroporous material ZJU-194 that features the unique flexible-robust network decorated with rich bare oxygen atoms. By integrating the refined pore space as well as specific binding sites, the activated ZJU-194 (ZJU194a) enables a selective two-step gate-opening adsorption toward C 2 H 2 , but blocks off the further uptake of CO 2 . It thus exhibits a very high C 2 H 2 /CO 2 selectivity (22.4) at ambient conditions, which is superior to most reported MOF materials. Its complete separation for 50/50 C 2 H 2 /CO 2 mixtures is further evidenced by the dynamic breakthrough experiments.& COPY; 2023 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.