A series of ceramic membranes for toluene filtration and degradation were prepared by impregnation. The filtration and degradation of gaseous toluene was investigated during microwave thermo-catalysis in the continuous flow mode. The results showed that the ceramic membranes with components of Cu, Mn, Ce oxides were active in the filtration and degradation of toluene. The active ingredients uniformly existed in spinel form of Cu, Mn and Ce oxides with different valence, and the load distribution was also correlated with its surface morphology and specific surface area. Under the optimal conditions of toluene concentration of 697 ± 54 mg m⁻³, gas flow rate of 200 mL min⁻¹ and microwave power of 500 W, the membrane with three loading times of active components showed excellent retaining property, catalytic activity and structural stability. After 10 consecutive cycles (2100 min in total), the maximum removal efficiency of toluene was 85%. Based on total volatile organic compounds (TVOC) analysis, removal efficiency of TVOC was maintained at 94%. Toxicity analysis indicated that most of the possible intermediate products generated in the degradation process had relatively less impact on the environment than that of toluene. Results demonstrated a new way to design catalytic ceramic membranes that can retain and degrade VOCs during filtration and microwave thermo-catalysis process.

通过浸渍制备了一系列用于甲苯过滤和降解的陶瓷膜。在连续流动模式下微波热催化过程中研究了气态甲苯的过滤和降解。结果表明，具有Cu，Mn，Ce氧化物成分的陶瓷膜对甲苯的过滤和降解具有活性。活性成分均以不同价态的铜，锰和铈氧化物的尖晶石形式均匀存在，其负载分布也与其表面形态和比表面积相关。在甲苯浓度为697±54 mg m ^-3的最佳条件下，气体流速为200 mL min ^-1在微波功率为500 W的条件下，活性成分负载量为三倍的膜表现出优异的保持性能，催化活性和结构稳定性。经过10个连续循环（总共2100分钟）后，甲苯的最大去除效率为85％。根据总挥发性有机化合物（TVOC）分析，TVOC的去除效率保持在94％。毒性分析表明，降解过程中产生的大多数可能的中间产物对环境的影响相对于甲苯而言相对较小。结果证明了一种设计催化陶瓷膜的新方法，该膜可以在过滤和微波热催化过程中保留和降解VOC。