Palladium-salen-bridged ionic networks immobilized on magnetic dendritic silica fibers for the synthesis of cyclic carbonates by oxidative carboxylation

Compared to epoxides, converting carbon dioxide (CO2) to cyclic carbonates is proposed as the most appropriate way to synthesize C1 building blocks. In this study, a Pd(ii) Schiff base complex is fixed on FeNi3/DFNS nanoparticles and then reacted with melamine to provide a recoverable magnetic heterogeneous nanocomposite of FeNi3/DFNS/salen/Pd(ii). It was determined that the FeNi3/DFNS nanoparticles are an appropriate catalyst for the oxidation carboxylation of styrenes with CO2 in a one-step reaction. The FeNi3/DFNS nanoparticles were characterized via XPS, FTIR, EDX, FE-SEM, XRD, TGA, TEM, IC, VSM and BET analyses. The important benefits of this catalyst are its easy work-up, low cost and high efficiency.