负载型金磁复合微球催化硝基苯化合物的还原  

Supported gold-magnetic composites applied in catalytic reduction of nitrobenzenes compounds

作　　者：张烨[1] 姚璐妍[1] 

机构地区：[1]天津大学药物科学与技术学院,天津300072

出　　处：《应用化工》2013年第7期1260-1264,共5页Applied Chemical Industry

摘　　要：以硼氢化钠为还原剂,聚乙烯亚胺(PEI)为稳定剂,制备了表面带正电的PEI-保护的金纳米粒子,以此为金源,采用模板法制备微米级SiO2/Au/γ-Fe2O3金磁复合微球,球形完整、分散良好,无金泄露现象。将SiO2/Au/γ-Fe2O3金磁复合微球用于催化对硝基苯胺、对氯硝基苯还原反应,显示出高催化活性及选择性。Electropositive-and PEI-protected gold nanoparticles were prepared with sodium borohydride as reductive agent and PEI as stabilizing agent,the as-prepared Au NPs was applied to fabricate SiO2/Au/γ-Fe2O3 gold-magnetic composites by template method,the composites have good sphere shape,dispersibility and no gold leakage.At last the gold-magnetic composites were applied to the reduction of nitrobenzenes compounds,which showed high catalytic activity and selectivity.

关 键 词：正电金纳米粒子 金磁微球 模板法 硝基苯胺还原 

分 类 号：TQ13[化学工程—无机化工]