Abstract
The fabrication of catalyst systems with magnetically separable has recently gained much attention because they provide economical and practical advantages in catalytic reactions. In this study, an eco-friendly, inexpensive, and magnetically retrievable novel catalyst was successfully prepared with the stabilization of palladium nanoparticles on kaolin/spinel nickel ferrite composite (Pd-kaolin/NiFe2O4). The structural and morphological characteristics of the designed Pd-kaolin/NiFe2O4 nanocatalyst were investigated by FT-IR, XRD, TG/DTG, FE-SEM, EDS, and TEM analyses. The catalytic potential of Pd-kaolin/NiFe2O4 nanocatalyst was then investigated in Suzuki cross coupling reaction, and a variety of biaryls were obtained with high reaction yields in solvent-free media in very short reaction time. Additionally, the catalytic tests demonstrated that Pd-kaolin/NiFe2O4 nanocatalyst could be isolated easily and recycled for multiple times. The study indicates that the designed Pd-kaolin/NiFe2O4 is a useful and stabile nanocatalyst for the construction of biaryls.
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