Catalytic activity study of Nano -Schiff base complexes/Al2O3 system

Cobalt complexes of 4,6-bis[(1E)-N-(2-hydroxyethyl) ethanimidoyl] benzene-1,3-diol) and 4,6-bis [(1E)-N-benzylethanimidoyl] benzene-1,3-diol) ligands were successfully supported on nano alumina. Furthermore, the catalytic performance of these catalysts was evaluated by measuring of hydrogen peroxide decomposition. The catalysts were then examined using high-resolution transmission electron microscopy (HR-TEM), scanning electron microscopy (SEM), N₂ adsorption-desorption analysis, Energy Dispersive X-ray Spectroscopy (EDX), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). It's interesting to note that the loading Co-complexes on Al₂O₃ catalyst resulted in a notable advancement in the catalytic efficiencies compared with single Al₂O₃. However, many parameters influenced the catalytic activity were investigated as reaction temperature, the concentration of Co-complexes. Results denoted that 0.015 Co-complexes / Al₂O₃ have the highest catalytic activity and showed greater stability throughout the H₂O₂ decomposition process and is recyclable several times.