Preparation of a magnetically recoverable nanocatalyst via cobalt-doped Fe3O4 nanoparticles and its application in the hydrogenation of nitroarenes  

作　　者：Bing Yang Qikun Zhang Xiaoye Ma Junqing Kang Jingmin Shi Bo Tang 

机构地区：[1]College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Eunctionalized Probes for Chemical Imaging, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, Chino

出　　处：《Nano Research》2016年第7期1879-1890,共12页纳米研究（英文版）

基　　金：This work was supported by the National Basic Research Program of China （No. 2013CB933800）, the National Natural Science Foundation of China （Nos. 21535004, 21227005, and 21390411）, and Shandong Provincial Natural Science Foundation of China （No. ZR2013EMM004）.

摘　　要：In this paper, we describe the facile and effective preparation of a series of cobalt-doped Fe3O4 nanocatalysts via chemical coprecipitation in an aqueous solution. The catalyst allowed the hydrogenation of chloronitrobenzenes to chloroanilines （CAs） to proceed at low temperatures in absolute water and at atmospheric pressure, resulting in approximately 100% yield and selectivity. Several factors that influence the yield of CAs were investigated. The results showed that the suitable dosage of the catalyst was -10 tool.% of the substrate, and the optimal reaction time, reaction temperature, and reaction pressure were 20 min, 80 ~C, and atmospheric pressure, respectively. Under the optimal reaction conditions, the CA yield was as high as 98.4%, and the nitro reduction rate reached 100%, which indicates the excellent selectivity of the homemade catalyst. This process also overcomes the environmental pollution harms associated with the traditional process.In this paper, we describe the facile and effective preparation of a series of cobalt-doped Fe3O4 nanocatalysts via chemical coprecipitation in an aqueous solution. The catalyst allowed the hydrogenation of chloronitrobenzenes to chloroanilines （CAs） to proceed at low temperatures in absolute water and at atmospheric pressure, resulting in approximately 100% yield and selectivity. Several factors that influence the yield of CAs were investigated. The results showed that the suitable dosage of the catalyst was -10 tool.% of the substrate, and the optimal reaction time, reaction temperature, and reaction pressure were 20 min, 80 ~C, and atmospheric pressure, respectively. Under the optimal reaction conditions, the CA yield was as high as 98.4%, and the nitro reduction rate reached 100%, which indicates the excellent selectivity of the homemade catalyst. This process also overcomes the environmental pollution harms associated with the traditional process.

关 键 词：CATALYSIS doping HYDROGENATION nanoparticles spinel phases 

分 类 号：TQ426.6[化学工程] O625.61[理学—有机化学]