A series of 3DOM CeMnO₃ perovskite catalysts were prepared by poly(methyl methacrylate) hard-templating-excessive impregnation method at calcination temperature of x °C (x = 600, 700, 800) and the heating rate of y °C/min (y = 1, 2, 5, 10). The samples were characterized by Brunauer-Emmett‐Teller method, scanning electron microscopy, transmission electron microscopy, H₂‐temperature programmed reduction, X‐ray photoelectron spectroscopy, X‐ray diffraction, moreover, the effect of the calcination process on the catalytic activity of the samples were discussed by the catalytic combustion of toluene. The results show that the 3DOM CeMnO₃ catalysts calcined at 600 °C promote the formation of a perovskite structure, inhibit the reduction of the Mn⁴⁺ species in the catalyst with high temperature. The catalyst expresses the complete macroporous structure, large specific surface area (38.8 m²/g), higher adsorption oxygen concentration and Mn⁴⁺ substance concentration, with a low T_90%=172 °C. By preparing the catalysts at different calcination heating rates, it can be concluded that the catalyst possesses a high concentration of adsorbed oxygen and a low reduction temperature and a large specific surface area (40.42 m²/g) greatly promotes adsorption stage catalytic oxidation reaction and catalytic combustion of toluene at low temperature under the heating rate of 5 °C/min. When the heating rate is 1 °C/min, the catalyst has a complete macroporous structure (>250 nm), which is beneficial to the exchange of macromolecular substances during the catalytic reaction and the catalyst has a high concentration of lattice oxygen suitable for the catalysis of toluene in high temperature flue gas combustion.

采用聚(甲基丙烯酸甲酯)硬模板-过度浸渍法在x °C( x  = 600、700、800 )的煅烧温度和y °C/min的升温速率下制备了一系列3DOM CeMnO ₃钙钛矿催化剂( y  = 1, 2, 5, 10)。通过Brunauer-Emmett-Teller法、扫描电镜、透射电镜、H ₂程序升温还原、X射线光电子能谱、X射线衍射对样品进行表征，此外，煅烧过程对催化活性的影响通过甲苯的催化燃烧讨论了样品的数量。结果表明，3DOM CeMnO ₃在 600 °C 下煅烧的催化剂促进钙钛矿结构的形成，在高温下抑制催化剂中Mn ⁴⁺物种的还原。该催化剂表现出完整的大孔结构、较大的比表面积（38.8 m ² /g）、较高的吸附氧浓度和Mn ⁴⁺物质浓度，低T _90% =172℃。通过在不同的煅烧升温速率下制备催化剂，可以得出结论，该催化剂具有较高的吸附氧浓度和较低的还原温度和较大的比表面积（40.42 m ²/g)在5℃/min的升温速率下，极大地促进了吸附阶段催化氧化反应和甲苯在低温下的催化燃烧。当升温速率为 1 ℃/min 时，催化剂具有完整的大孔结构（>250 nm），有利于催化反应过程中大分子物质的交换，催化剂具有高浓度的晶格氧，适合于甲苯在高温烟气燃烧中的催化作用。