基于咔唑羧酸配体构筑铁基金属有机框架及其对CO2/CH4混合气体的分离性质  

Construction of a Fe-MOF Based on Carbazole-carboxylate Ligand for CO2/CH4 Separation

作　　者：夏雨沛 王晨雪 郑金玉 李娜 常泽 卜显和 XIA Yupei;WANG Chenxue;ZHENG Jinyu;LI Na;CHANG Ze;BU Xianhe(Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry,School of Materials Science and Engineering,Nankai University,Tianjin 300350,China;State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fujian 350002,China;State Key Laboratory of Catalytic Materials and Reaction Engineering,Research Institute of Petroleum Processing,SINOPEC,Beijing 100083,China)

机构地区：[1]南开大学材料科学与工程学院,天津市金属与分子基材料化学重点实验室,天津300350 [2]中国科学院福建物质结构研究所,结构化学国家重点实验室,福州350002 [3]中国石化石油化工科学研究院,催化材料与反应工程国家重点实验室,北京100083

出　　处：《高等学校化学学报》2020年第11期2415-2420,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21671112,21905142);中国石化石油化工科学研究院开放基金资助.

摘　　要：通过咔唑羧酸配体(H3L)与三核铁簇[Fe3(μ3-O)(CH3COO)6]在水热条件下反应,合成了具有三维骨架结构的铁基金属有机框架(1).气体吸附实验结果表明,化合物1具有高的比表面积且对CO2的吸附量大于对CH4的吸附量.理想溶液吸附理论(IAST)计算结果表明,化合物1在100 kPa及温度分别为273和298 K下对CO2/CH4(体积比为0.5∶0.5)混合气体的分离比分别为3.52和3.15,预示其可以作为一种CO2/CH4分离型材料.A Fe-MOF(metal-organic framework)(1)was synthesized using 4,4′,4″-(9H-carbazole-3,6,9-triyl)-tribenzoic acid(H3L)and[Fe3(μ3-O)(CH3COO)6]cluster under solvothermal condition.The structure of the ompound 1 was characterized by X-ray crystallography.Compound 1 possessed a 3D framework with a high specific area.The IAST(Ideal Adsorbed Solution Theory)selectivity of compound 1 towards CO2/CH4(volume ratio 0.5∶0.5)is 3.52(273 K)and 3.15(298 K),respectively.Gas sorption experiments reveal that compound 1 can serve as a candidate for CO2/CH4 separation.

关 键 词：金属有机框架 铁基金属有机框架 咔唑 气体吸附分离 

分 类 号：O614[理学—无机化学] O647[理学—化学]