微型多孔材料
化学
离子液体
催化作用
复合数
介孔材料
整体
多孔性
离子键合
金属有机骨架
化学工程
混合材料
多相催化
纳米技术
吸附
有机化学
复合材料
材料科学
离子
工程类
作者
Danyang Dong,Xinyu Zhao,Chun Pu,Yao Yao,Bo Zhao,Ge Tian,Ganggang Chang,Xiaoyu Yang
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-11-29
卷期号:62 (49): 20528-20536
被引量:2
标识
DOI:10.1021/acs.inorgchem.3c03923
摘要
Hybridization of metal–organic frameworks (MOFs) and homogeneous ionic liquids (ILs) endows the heterogeneous composite with high porosity and accessible multiple active sites (e.g., acidic or basic sites), which exhibits great potential in CO2 capture and conversion. Nevertheless, the majority of MOF composites are synthesized as powders, significantly restricting their practical applications due to inherent problems such as poor handling properties, high pressure drops, and mechanical instability. Thus, it is crucial to shape MOF composites into various monoliths that allow efficient processing, especially for industrial purposes. In this work, a hierarchical ILs@nanoMOF composite gel (H-IL@UiO-66-gel) featuring both intraparticle micropores and interparticle mesopores and multiple active sites was successfully fabricated by a two-step approach. Benefiting from the integrated advantages of the hierarchically porous MOF for enhanced mass transfer and affinity of ILs for activating CO2 molecules, the resultant H-IL@UiO-66-gel exhibits excellent uptake of macromolecules and catalytic activity toward CO2 cycloaddition with epoxides under moderate conditions, far beyond the traditional microporous IL@UiO-66-gel and unfunctionalized H-UiO-66-gel. Furthermore, the H-IL@UiO-66 composite monolith can be effortlessly separated and reused at least three times without depletion of catalytic activity. It is believed that this fabrication method for the shaping of MOF composites is highly versatile and can be extended to other types of MOFs for various application fields.
科研通智能强力驱动
Strongly Powered by AbleSci AI