Recyclable and Magnetically Functionalized Metal-Organic Framework Catalyst: IL/Fe3O4@HKUST-1 for the Cycloaddition Reaction of CO2 with Epoxides.
Recyclable and Magnetically Functionalized Metal-Organic Framework Catalyst: IL/Fe3O4@HKUST-1 for the Cycloaddition Reaction of CO2 with Epoxides.
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DOI：
10.1021/acsami.1c03345
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发表时间：
2021-05
影响因子：
9.5
通讯作者：
Tongtong Wang;Xuedan Song;Hailong Xu;Miaomiao Chen;Jie Zhang;Min Ji
中科院分区：
文献类型：
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作者：
Tongtong Wang;Xuedan Song;Hailong Xu;Miaomiao Chen;Jie Zhang;Min Ji
在水-乙醇介质中，将离子液体(IL)[AEMIm]BF4接枝到磁性金属-有机骨架Fe3O4@HKUST-1上，合成了可回收利用的磁性纳米复合催化剂(IL/Fe3O4@HKUST-1)。用粉末X射线衍射仪、电子显微镜、傅立叶变换红外光谱、氮气吸附-脱附、密度泛函理论和磁性测试系统对IL/Fe3O4@HKUST-1的性能进行了表征。在温和条件下，IL/Fe3O4@HKUST-1在CO2与环氧化物的无溶剂环加成反应中表现出较高的活性。此外，催化剂可以很容易地从反应混合物中分离出来，回收的催化剂在几个循环中都保持了高性能。IL/Fe3O4@HKUST-1中Lewis酸碱中心的协同作用使其比单独的IL或HKUST-1具有更大的反应活性。
A recyclable and magnetic nanocomposite catalyst (IL/Fe3O4@HKUST-1) was synthesized via grafting ionic liquid (IL) [AEMIm]BF4 into magnetically functionalized metal-organic framework Fe3O4@HKUST-1 in a water-ethanol media. The properties of IL/Fe3O4@HKUST-1 were fully characterized by powder X-ray diffraction, electron microscopy, Fourier-transform infrared spectroscopy, nitrogen adsorption-desorption, density-functional theory, and a magnetic property measurement system. IL/Fe3O4@HKUST-1 showed high activity in the solvent-free cycloaddition of CO2 with epoxides under mild conditions. Furthermore, the catalyst can be easily separated from the reaction mixture, and the recycled catalyst maintained high performance for several cycles. The synergistic effect of the Lewis acid and base sites in IL/Fe3O4@HKUST-1 contributes to its greater reactivity than individual IL or HKUST-1.