Catalytic activity of ratio-dependent SBA-15 supported cerium/Pt catalysts for highly selective oxidation reaction of benzyl alcohol to benzaldehyde

The Pt/Ce bimetal doped Mesoporous SBA-15 with various metal ratios was prepared by a wet chemical route. Several characterization methods were applied to determine the structural and chemical properties of the catalyst such as XRD, FT-IR, SEM, BET, and TEM Analysis. The prepared SBA-15 catalyst has a hexagonal mesoporous structure after the addition of cerium doesn't affect the structure of the SBA-15 catalyst it is also confirmed by TEM analysis. The catalytic performances of the Pt/Ce-SBA-15 catalysts were examined in the BzOH conversion under acetonitrile as a solvent and tert-butyl hydroperoxide (TBHP) as an oxidant. The Pt/CeO2 (15%)-SBA-15 (PCS-15) is the best catalyst composition of the prepared catalyst with a maximum conversion of 98.5% and selectivity of 100%. The reaction parameters like the molar ratio of TBHP: BzOH, catalyst amount, temperature, and reaction time were explored in detail. The recycling studies show that the synthesized Pt/CeO2 (15%)-SBA-15 (PCS-15) catalyst is more stable up to 7 consecutive runs. The Pt/CeO2 (15%)-SBA-15 composite has tremendous application potential in organic synthesis, fuel cells, and electrochemical biosensors due to its outstanding reactivity, excellent selectivity, and remarkable stability as well as recyclability. (C) 2021 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.