A series of Mn₂O₃ catalysts were prepared by different hydrothermal temperatures and employed to the catalytic oxidation of benzene due to their high activity. The Mn-120 sample with three-dimensional (3D) hierarchical cube-like morphology mainly exposed (2 1 1) crystal plane exhibited the best catalytic activity for the oxidation of benzene and achieved the benzene conversion of 90% at 248 °C. Meanwhile, the best catalytic performance of the Mn-120 sample was attributed to the most amounts of the Mn³⁺ species and surface-adsorbed oxygen. With the increase of Mn³⁺ species, the oxygen binding capacity of Mn-120 was reduced, which could increase its oxygen mobility. The abundant adsorbed oxygen species of Mn-120 could improve the replenishment capacity of lattice oxygen species, and the reaction pathway of catalytic oxidation of benzene over MnO₂ obeyed the Mars-Van-Krevelen (MVK) mechanism.

在不同的水热温度下制备了一系列Mn ₂ O ₃催化剂，并由于其高活性而用于苯的催化氧化。主要暴露于（2 1 1）晶面的具有三维（3D）分层立方状形态的Mn-120样品表现出对苯氧化的最佳催化活性，并在248°C时实现了90％的苯转化率。同时，Mn-120样品的最佳催化性能归因于大量的Mn ³⁺种类和表面吸附的氧气。随着Mn ³⁺的增加物种中，Mn-120的氧结合能力降低，这可能增加其氧迁移率。Mn-120的大量吸附氧可以提高晶格氧的补充能力，苯在MnO ₂上催化氧化的反应途径遵循Mars-Van-Krevelen（MVK）机理。