Selective Oxidation of Styrene to Benzaldehyde by Co‐Ag Codoped ZnO Catalyst and H₂O₂ as Oxidant

Abstract

Various ratio of Co‐Ag supported on ZnO have been evaluated in the selective catalytic oxidation of styrene to benzaldehyde, using H 2 O 2 as an oxidant. The catalysts were prepared by a sol‐gel process and were characterized using XRD, FT‐IR, TG‐DTG, BET, and SEM/EDX. The performance of the prepared catalyst was investigated under different parameters such as solvent, temperature, substrate/oxidant molar ratios, reaction time, and doping percent. The Zn 1− x − y Ag x Co y O catalysts exhibit a good activity and a high selectivity towards benzaldehyde (95%) with the formation of only 5% of acetophenone.