Author/Authors :
Zhang، نويسنده , , Fengwei and Niu، نويسنده , , Jianrui and Wang، نويسنده , , Haibo and Yang، نويسنده , , Honglei and Jin، نويسنده , , Jun and Liu، نويسنده , , Na and Zhang، نويسنده , , Yubin and Li، نويسنده , , Rong and Ma، نويسنده , , Jiantai Ma، نويسنده ,
Abstract :
A novel and high-performance palladium-based catalyst for Heck reaction was prepared easily by the co-precipitation method. The catalyst was characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), vibrating sample magnetometry (VSM), X-ray photoelectron spectroscopy (XPS) and atomic absorption spectrophotometry (AAS). The catalyst afforded a fast conversion of the 4-bromonitrobenzene to 4-nitrostilbene at a catalyst loading of 5 mol%, and the efficiency of the catalyst remains unaltered even after 6 repeated cycles. The excellent catalytic performance of the Pd/Fe3O4 catalyst might be attributed to the enhanced synergistic effect between Pd nanoparticles and magnetite.
Keywords :
B. Chemical synthesis , C. X-ray diffraction , D. Catalytic properties , A. Magnetic materials
