以离子液体/铜为支撑的磁性介孔二氧化硅纳米复合材料是用于 Chan-Lam 偶联反应的强力高稳定催化剂

IF 2.8 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Silicon Pub Date : 2024-07-05 DOI:10.1007/s12633-024-03082-w

Shiva Kargar, Dawood Elhamifar

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引用次数: 0

摘要

本文通过模板定向水解 Fe3O4@RF 复合材料上的原硅酸四甲酯 (TMOS)，然后接枝丙基咪唑氯/铜复合物，制备了一种新型磁性介孔二氧化硅纳米复合材料（MMS@IL/Cu），该复合材料具有与 IL/Cu 复合物修饰的核壳结构。MMS@IL/Cu 纳米复合材料通过 PXRD、FT-IR、TGA、VSM、EDX、SEM 和 TEM 技术进行了表征。MMS@IL/Cu 被用作一种强效纳米催化剂，在 50 °C 的乙醇中成功促进了 Chan-Lam 偶联反应。在相对较短的时间内获得了高产率的所需产物。所设计的磁性催化剂在应用条件下至少可以保持高效率运行八次。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Magnetic Mesoporous Silica Nanocomposite Supported Ionic Liquid/Cu as a Powerful and Highly Stable Catalyst for Chan-Lam Coupling Reaction

Herein, a novel magnetic mesoporous silica nanocomposite with a core–shell structure modified with IL/Cu complex (MMS@IL/Cu) is prepared through the template-directed hydrolysis of tetramethyl orthosilicate (TMOS) over Fe₃O₄@RF composite followed by grafting of propyl-imidazolium chloride/copper complex. The MMS@IL/Cu nanocomposite was characterized by PXRD, FT-IR, TGA, VSM, EDX, SEM and TEM techniques. The MMS@IL/Cu was employed as a robust nanocatalyst to successfully promote the Chan-Lam coupling reaction in EtOH at 50 °C. High yields of the desired products were obtained within a relatively short time. The designed magnetic catalyst could retain its high efficiency for at least eight runs under applied conditions.

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来源期刊

Silicon CHEMISTRY, PHYSICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.90

自引率

20.60%

发文量

685

审稿时长

>12 weeks

期刊介绍： The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.