Enhancing hydrophobicity via core-shell metal organic frameworks for high-humidity flue gas CO_(2) capture

查看全文 作　　者：Yinji [1]Wan;Dekai [1]Kong;Feng [2]Xiong;Tianjie [2]Qiu;Song [2]Gao;Qiuning [1]Zhang;Yefan [1]Miao;Mulin [2]Qin;Shengqiang [2]Wu;Yonggang [2]Wang;Ruiqin [1]Zhong;Ruqiang [2]Zou

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum(Beijing),Beijing 102249,China;[2]Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials,School of Materials Science and Engineering,Peking University,Beijing 100871,China

出　　处：《Chinese Journal of Chemical Engineering》索引2023年第61卷第9期,共8页

基　　金：supported by the National Natural Science Foundation of China(51772329,51972340,and 51825201)。 摘　　要：Developing metal-organic framework(MOF)materials with the moisture-resistant feature is highly desirable for CO_(2)capture from highly humid flue gas.In this work,a new core-shell MOF@MOF composite using Mg-MOF-74 with high CO_(2)capture capacity as a functional core and hydrophobic zeolitic imidazolate framework-8(ZIF-8)as a protective shell is fabricated by the epitaxial growth method.Experimental results show that the CO_(2)adsorption performance of the core-shell structured Mg-MOF-74@ZIF-8 composites from water-containing flue gas is enhanced along with their improved hydrophobicity.The dynamic breakthrough results show that the Mg-MOF-74@ZIF-8 with three assembled layers(Mg-MOF-74@ZIF-8-3)can capture 3.56 mmol-g^(-1)CO_(2)from wet CO_(2)/N_(2)(VCO_(2):V_(N_(2))=15:85)mixtures,which outperforms Mg-MOF-74(0.37 mmol·g^(-1))and most of the reported physisorbents. 关键词：CORE-SHELL Mg-MOF-74@ZIF-8 CO_(2)capture Hydrophobic effect

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Enhancing hydrophobicity via core-shell metal organic frameworks for high-humidity flue gas CO_(2) capture

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