Synthesis, characterization and catalytic investigation of alumina supported derived benzene- 1,3 diol - cobalt complexes

Abstract

4,6-bis[(1E)-N-(2-hydroxyethyl) ethanimidoyl] benzene-1,3-diol) Cobalt and (4,6-bis [(1E)-N-benzylethanimidoyl] benzene-1,3-diol) Cobalt complexes were successfully supported on Al₂O₃. Furthermore, the catalytic effectiveness of each were evaluated in the process of decomposition of hydrogen peroxide (H₂O₂). 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 Al₂O₃catalysts. However, the influence of the concentration of Co-complexes were studied to get optimum amount. The catalysts were then examined using high-resolution transmission electron microscopy (HR-TEM), N₂ adsorption-desorption analysis, and X-ray diffraction (XRD). Results denoted that 0.015 Co-complexes / Al₂O₃ have the highest catalytic activity. The effect of temperature on the catalytic decomposition of H₂O₂ has been investigated it was found that as the temperature increases the catalytic activity enhanced. Ultimately, the 0.015 Co-complex / Al₂O₃ catalyst showed greater stability throughout the H₂O₂ decomposition process and is recyclable several times.