Toluene was selected as a representative VOCs due to the toxicity and difficulty to degrade aromatic hydrocarbons. The degradation of toluene by the DBD plasma-catalytic method paid much attention. In this process, Mn-based catalysts with Ce, Co were recommendable. However, Mn-based composite catalyst to deal with toluene with DBD plasma-catalytic method, the by-product formation, optimal composition and service life are still not clear. In this work, Mn_xCo_yCe_zO_n catalysts were prepared by the hydrothermal method. The physicochemical characteristics of the catalysts were analyzed. The removal efficiency and by-product analysis of toluene by the DBD plasma-catalytic method with Mn_xCo_yCe_zO_n catalysts were investigated. It was found that Mn_xCo_yCe_zO_n has a good crystalline phase composition, high amounts of chemisorbed and lattice oxygen. The combination of Mn and Co would significantly increase the lattice oxygen of the catalyst, and the addition of Ce can increase the content of chemisorbed oxygen. Through evaluation of catalytic activity, the catalyst of Mn₁Co₁ showed the best catalytic performance. After the continuous test, the Mn₁Co₁ catalyst showed the highest carbon balance and the lowest NOₓ generation rate when the continuous reaction time was less than 5 h.

由于芳香烃的毒性和难降解性，甲苯被选为代表性的 VOCs。DBD等离子体催化法降解甲苯备受关注。在这个过程中，推荐使用含有 Ce、Co 的 Mn 基催化剂。然而，锰基复合催化剂用DBD等离子催化法处理甲苯，副产物的形成、最佳组成和使用寿命仍不清楚。在这项工作中，Mn _x Co _y Ce _z O _n催化剂是通过水热法制备的。分析了催化剂的理化特性。Mn _x Co _y的 DBD 等离子体催化法去除甲苯的效率及副产物分析研究了Ce _z O _n催化剂。发现Mn _x Co _y Ce _z O _n具有良好的结晶相组成、大量的化学吸附和晶格氧。Mn和Co的结合会显着增加催化剂的晶格氧，而Ce的加入可以增加化学吸附氧的含量。通过催化活性评价，Mn₁Co₁催化剂表现出最好的催化性能。连续试验后，当连续反应时间小于5小时时，Mn₁Co₁催化剂表现出最高的碳平衡和最低的NOₓ生成率。