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<p>Developing active lower Mn −based metal oxides through the addition of non−noble metal oxides like Fe<sub>2</sub>O<sub>3</sub> as a promoter is the most cost−effective technique for generating active heterogeneous catalysts for diverse oxidation processes. In this paper, we provide Fe<sub>2</sub>O<sub>3</sub>−Mn<sub>2</sub>O<sub>3</sub> mixed oxides for the aerobic oxidation of benzyl alcohol (BA) into benzaldehyde (BZA) in the absence of a solvent, using molecular O<sub>2</sub>. The insertion of Fe<sub>2</sub>O<sub>3</sub> on Mn<sub>2</sub>O<sub>3</sub> support improves the reducibility of Mn and surface adsorbed oxygen (O<sub>ads</sub>) by forming crystal defects on the Mn<sub>2</sub>O<sub>3</sub> surface via Mn and Fe atom exchanges. Fe<sub>2</sub>O<sub>3</sub> significantly increases the Mn<sub>2</sub>O<sub>3</sub> catalytic activity of the BA catalytic oxidation process. The conversion rate of benzyl alcohol (<i>X</i><sub>BA</sub>) is 3.2 times that of bare Mn<sub>2</sub>O<sub>3</sub>. The structural development of bare Mn<sub>2</sub>O<sub>3</sub> and its varied Fe<sub>2</sub>O<sub>3</sub>−loaded catalysts has been thoroughly studied using spectroscopic techniques such as XPS, P−XRD, BET, and SEM examination. Furthermore, the effect of reaction parameters such as temperature, different wt% of Fe<sub>2</sub>O<sub>3</sub> loading, catalyst quantity, and O<sub>2</sub> flow rates on the BA oxidation reaction has been carefully examined.</p>

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Synergetic Effect of Fe Decorated Mn2O3 Support in Application of Aerobic Benzyl Alcohol Oxidation Reaction

  • 期刊论文

  • 发表日期：

    2025年7月25日

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  • J. Vasantha Madhuri,
  • Boya Venkata Swamy,
  • M. Sudha,
  • Ramesh Kumar Gajula,
  • Police Vishnu Vardhan Reddy,
  • Amrita Saha

摘要

Developing active lower Mn −based metal oxides through the addition of non−noble metal oxides like Fe2O3 as a promoter is the most cost−effective technique for generating active heterogeneous catalysts for diverse oxidation processes. In this paper, we provide Fe2O3−Mn2O3 mixed oxides for the aerobic oxidation of benzyl alcohol (BA) into benzaldehyde (BZA) in the absence of a solvent, using molecular O2. The insertion of Fe2O3 on Mn2O3 support improves the reducibility of Mn and surface adsorbed oxygen (Oads) by forming crystal defects on the Mn2O3 surface via Mn and Fe atom exchanges. Fe2O3 significantly increases the Mn2O3 catalytic activity of the BA catalytic oxidation process. The conversion rate of benzyl alcohol (XBA) is 3.2 times that of bare Mn2O3. The structural development of bare Mn2O3 and its varied Fe2O3−loaded catalysts has been thoroughly studied using spectroscopic techniques such as XPS, P−XRD, BET, and SEM examination. Furthermore, the effect of reaction parameters such as temperature, different wt% of Fe2O3 loading, catalyst quantity, and O2 flow rates on the BA oxidation reaction has been carefully examined.