| 丁明珠,高健,李冬冬,廉红蕾.化学通报,2016,79(12):1106-1112. |
| 核-壳结构磁性纳米颗粒负载离子液体的合成方法及应用* |
| Synthesis and Application of Core-shell Structure Magnetic Nanoparticles Supported Ionic Liquid* |
| 投稿时间：2016-03-10 修订日期：2016-05-04 |
| DOI： |
| 中文关键词: 离子液体 核-壳结构 磁性纳米颗粒 催化剂载体 分离和回收 |
| 英文关键词:ionic liquid, core-shell structure, magnetic nanoparticles, catalyst support, separation and recovery |
| 基金项目:河南省教育厅科学技术研究重点项目（14A530003），河南省高等学校重点科研项目（15B530004） |
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| 中文摘要: |
| 离子液体具有良好的溶解能力、稳定性、结构可调性、无明显的蒸气压等优点,使其可以作为良好的有机反应介质和催化剂,但由于其价格昂贵且不易从反应体系中分离,使其应用受到限制。以超顺磁性纳米颗粒作为催化剂载体,利用其所提供的磁学特性,可通过外磁场对催化剂进行简单有效的分离。但由于超顺磁性纳米颗粒具有的高比表面能以及粒子间的偶极距作用,使其容易团聚,不能稳定分散于反应体系。将磁性纳米颗粒表面包裹一层有机物或无机物形成核-壳结构复合材料,既可以阻止其团聚又可以对其进行表面功能化。因此,将离子液体固载到核-壳结构磁性纳米颗粒表面,制备可回收循环使用多相催化剂的工作受到广泛关注。本文综述了近十年来核-壳结构磁性纳米颗粒负载离子液体催化剂的制备方法及其在有机合成方面的应用,并对其未来的应用前景进行了展望。 |
| 英文摘要: |
| Ionic liquid have excellent solubility and stability, structure tunability and negligible vapor pressures, which make them be suitable reaction media for organic synthesis and catalyst. However, the large-scale application of ionic liquids is still far from realization because of their high cost and difficult recovery. Superparamagnetic nanoparticles can be simply and efficiently removed from reaction mixtures with an external magnetic field. However, they are sensitive to agglomeration and can’t be stably dispersed in the reaction system due to their high specific surface energy and magnetic dipole interactions. Using organic or inorganic substance to coat magnetic nanoparticles can form a kind of core-shell structure composite materials, which not only prevent them from agglomerating but also inSfavourSof surfaceSfunctionalization. Therefore, the immobilization of ionic liquid on the surface of core-shell structure magnetic nanoparticles and the preparation of recyclable heterogeneous catalysts has been widely concerned. In this paper, the preparation method of core-shell magnetic nanoparticles supported ionic liquid catalyst as well as its application in organic synthesis is reviewed, and the direction of the further research is suggested. |
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