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聚乙烯基胺包裹Fe_3O_4@SiO_2磁性微球用于Knoevenagel缩合(英文) 被引量:7
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作者 farzad zamani Elham Izadi 《催化学报》 SCIE EI CAS CSCD 北大核心 2014年第1期21-27,共7页
Polyvinyl amine coated Fe3O4@SiO2 composite microspheres with a core‐shell structure were prepared and employed as a magnetic catalyst for Knoevenagel condensation under mild conditions. The catalyst can be readily r... Polyvinyl amine coated Fe3O4@SiO2 composite microspheres with a core‐shell structure were prepared and employed as a magnetic catalyst for Knoevenagel condensation under mild conditions. The catalyst can be readily recovered using a magnet and reused several times without loss in activity or selectivity. The performance of the magnetic base catalyst was compared with that of polyvinyl amine functionalized mesoporous SBA‐15, which showed that the magnetic nanoparticles gave improved reaction rate and yield. 展开更多
关键词 FE3O4 聚乙烯胺 磁性微球 KNOEVENAGEL缩合 缩合反应 二氧化硅 包覆 磁性催化剂
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