一个微孔钴基金属有机骨架的合成及其选择性气体吸附  

A microporous cobalt-based metal-organic framework for selective gas adsorption

作　　者：盖世鹏 田金豆 江飞龙[2] 陈其辉 洪茂椿[2] GAI Shi‑Peng;TIAN Jin‑Dou;JIANG Fei‑Long;CHEN Qi‑Hui;HONG Mao‑Chun(College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China;Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China)

机构地区：[1]福建师范大学化学与材料学院,福州350007 [2]中国科学院福建物质结构研究所,福州350002

出　　处：《无机化学学报》2023年第6期1014-1022,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21871265)资助。

摘　　要：利用硝酸钴与配体5,5’-di(1H-1,2,4-triazol-1-yl)-(1,1’-biphenyl)-2,2’-dicarboxylic acid(H_(2)DTBDA)进行溶剂热反应,制备了一个结构新颖的金属有机骨架{[Co(DTBDA)]_(2)·DMF·Me OH}_(n)(FJI-H37)。FJI-H37不仅具有适合气体分子吸附的0.69 nm的微孔,还具有良好的热稳定性及有机溶剂容忍性。气体吸附测试表明FJI-H37不仅能从C_(2)H_(2)/CO_(2)(体积比50:50)混合气中选择性吸附C_(2)H_(2),还可以从CO_(2)/N_(2)(体积比15:85)和CO_(2)/CH_(4)(体积比50:50)混合气中选择性捕获CO_(2);固定床突破实验进一步证实了其高效的气体分离能力。Herein,a novel metal-organic framework{[Co(DTBDA)]2·DMF·MeOH}n(FJI-H37)was prepared by solvothermal reaction of cobalt nitrate with ligand 5,5'-di(1H-1,2,4-triazol-1-yl)-(1,1'-biphenyl)-2,2'-dicarboxylic acid(H_(2)DTBDA).FJI-H37 not only has 0.69 nm of micropores for gas adsorption but also possesses good thermal stability and organic solvent tolerance.The gas adsorption tests show that FJI-H37 can not only selectively adsorb C_(2)H_(2)from a C_(2)H_(2)/CO_(2)(50:50,V/V)mixture with a relatively high adsorption selectivity of 4.2,but also selectively capture CO_(2)from a CO_(2)/N_(2)(15:85,V/V)and CO_(2)/CH_(4)(50:50,V/V)mixture;which can be further confirmed by the dynamic fixedbed breakthrough experiments.CCDC:2243534.

关 键 词：金属有机骨架 微孔材料 乙炔吸附 二氧化碳捕获 选择性吸附 

分 类 号：O614.812[理学—无机化学]