| 钯纳米粒子@超顺磁性Fe3O4催化的Heck偶联反应 |
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| 引用本文： | 郭海昌,刘诗咏. 钯纳米粒子@超顺磁性Fe3O4催化的Heck偶联反应[J]. 浙江大学学报(理学版), 2012, 39(3): 317-321 |
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| 作者姓名： | 郭海昌 刘诗咏 |
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| 作者单位： | 台州学院化学系,浙江临海,317000 |
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| 基金项目： | 中国博士后基金面上项目(No.20110491763) |
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| 摘 要： | 利用Fe3O4溶胶的正电荷特性,将络负离子PdCl 24-通过静电作用吸附在Fe3O4胶体粒子表面,以抗坏血酸(Vc)进一步将其还原,即得到负载有Pd金属团簇的Fe3O4胶体粒子(Pd0@Fe3O4).该超顺磁性Fe3O4载体负载的纳米Pd对Heck反应表现出良好的催化活性,且反应完毕后可简单地通过永久磁铁将催化剂从反应体系中分离,循环使用.研究表明,该催化剂在循环使用5次后反应活性没有明显下降,并对多种卤代芳烃的Heck偶联反应表现出优异的催化活性.
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| 关 键 词： | 超顺磁性 fe3o4 纳米钯 可回收 heck偶联反应 |
Nano-palladium @ superparamagnetic Fe3O4 as catalyst for Heck coupling reaction |
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| GUO Hai-chang , LIU Shi-yong. Nano-palladium @ superparamagnetic Fe3O4 as catalyst for Heck coupling reaction[J]. Journal of Zhejiang University(Sciences Edition), 2012, 39(3): 317-321 |
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| Authors: | GUO Hai-chang LIU Shi-yong |
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| Affiliation: | (College of Chemistry & Pharmacy,Taizhou University,Linhai 317000,Zhejiang Province,China) |
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| Abstract: | In this work,a simple way to combine Pd0 with Fe3O4 nanoparticles(NPs) is developed.Firstly,PdCl2-4 was immobilized on the cationic Fe3O4 colloids via electrostatic interaction.Further reduction of these PdCl2-4/ Fe3O4 was resulted in Pd0@Fe3O4 NPs.These superparamagnetic NPs supported Pd0 showed high efficiency toward Heck reactions.After the reaction,the catalyst could be simply recycled by permanent magnet.This Pd0@Fe3O4 catalyst could be reused for 5 times without significant loss in catalytic activity and showed high efficiency toward Heck coupling for various aryl halides. |
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| Keywords: | superparamagnetic Fe3O4 nano-palladium recyclable Heck coupling reaction |
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