Synthesis of magnetic Pd nano composite and its application as recoverable catalyst for the C-C cross coupling Suzuki reaction

So far, various substrates for the stabilization of palladium nanoparticles have been used, including polymers which are very useful due to these functional groups [1]. Inthis work, two polymers with difference base were used for immobilization of Pd nanoparticles. Snake skin polymer as a natural polymer ( Keratin base) and polyaniline as a synthesized polymer with Fe3O4 nanoparticles were used for preparation Nano composite with different combine percentages. For this purpose polyaniline was synthesized in mild condition that possesses high environmental stability. Also Fe3O4 nanoparticles were prepared by the conventional coprecipitation method separately [2,3] and snake skin was ready for made a Nano composite. Finally, palladium nanoparticles were immobilized on prepared Nano composite. The reason why iron nanoparticles are used as substrates: 1- low toxicity 2- high-volume ratio 3- easy separation and high dispersion. This heterogeneous catalytic system was investigated for the C-C cross coupling Suzuki reaction in Ethanol/water as a green solvent at room temperature which shown high catalytic activity and reusability.