Using non-noble metal catalysts to chemoselectively reduce the 3-nitrostyrene into 3-vinylaniline is extremely attractive due to the importantapplications of aromatic amines.However,the separation and recycle of catal...Using non-noble metal catalysts to chemoselectively reduce the 3-nitrostyrene into 3-vinylaniline is extremely attractive due to the importantapplications of aromatic amines.However,the separation and recycle of catalytic particles to sustainably catalyze are still challenging on accountof their small size.In this communication,we report a novel magnetically recyclable catalyst of Sm2Co17/Cu to chemoselectively reduce3-nitrostyrene into 3-vinylaniline by activating ammonia borane(AB)to yield hydrogen.The Sm2Co17/Cu,composited of 180 nm Sm2Co17nano magnet and 10 nm Cu catalyst nano particles,shows a high conversi on(98%)and a high selectivity(99%)for 3-nitrostyrene under ultrasonic concussion.More importantly,they are easily collected by self-separation method without any magnetic field.As a consequenee,the excellent recyclable feature is acquired even underwent 10 cycles.Our approach provides a green strategy to synthesize magneticallyrecyclable catalysts.展开更多
基金The work was supported by the National Natural Science Foundation of China(Nos.51701109 and 51806115)Natural Science Foundation of Beijing Municipality,China(No.2192007)+3 种基金the China Postdoctoral Science Foundation(No.2018M641132)International S&T Cooperation Program of China(No.2015DFG52020),Key Program of National Natural Science Foundation of China(51331003)Program of Disciplines Construction in Beijing(No.PXM2019_014204_500031).
文摘Using non-noble metal catalysts to chemoselectively reduce the 3-nitrostyrene into 3-vinylaniline is extremely attractive due to the importantapplications of aromatic amines.However,the separation and recycle of catalytic particles to sustainably catalyze are still challenging on accountof their small size.In this communication,we report a novel magnetically recyclable catalyst of Sm2Co17/Cu to chemoselectively reduce3-nitrostyrene into 3-vinylaniline by activating ammonia borane(AB)to yield hydrogen.The Sm2Co17/Cu,composited of 180 nm Sm2Co17nano magnet and 10 nm Cu catalyst nano particles,shows a high conversi on(98%)and a high selectivity(99%)for 3-nitrostyrene under ultrasonic concussion.More importantly,they are easily collected by self-separation method without any magnetic field.As a consequenee,the excellent recyclable feature is acquired even underwent 10 cycles.Our approach provides a green strategy to synthesize magneticallyrecyclable catalysts.
