摘要
采用浸渍法,以TiO_(2)、ZrO_(2)、Al_(2)O_(3)为载体负载Cu-Mn-Ce复合氧化物,成功制备Cu-Mn-Ce、Cu-Mn-Ce/TiO_(2)、Cu-Mn-Ce/ZrO_(2)、Cu-Mn-Ce/Al_(2)O_(3)四种催化剂,探究不同载体催化剂对甲苯气体的催化性能及催化剂稳定性能,并利用XRD、SEM对四种催化剂进行表征分析。结果表明,以TiO_(2)为载体所制催化剂可使甲苯气体自然降解温度降低约400℃,且其处理效果为所制催化剂中最好。XRD和SEM表征结果表明,所制催化剂比表面积较大,利于活性中心的分散。纯Cu-Mn-Ce催化剂通过金属-载体相互作用调控界面电子结构从而具有优良活性,TiO_(2)的引入更好地保持了其活性并提高了热稳定性。
In this paper,four catalysts,Cu-Mn-Ce,Cu-Mn-Ce/TiO_(2),Cu-Mn-Ce/ZrO_(2)and Cu-Mn-Ce/Al_(2)O_(3),were successfully prepared using TiO_(2),ZrO_(2)and Al_(2)O_(3)as carriers of Cu-Mn-Ce complex oxides to investigate the catalytic performance of different carrier catalysts for toluene gas and the catalyst.The catalytic performance and catalyst stability of the four catalysts were investigated,and the four catalysts were characterized by XRD and SEM.The results showed that the natural degradation temperature of toluene gas could be reduced by about 400°C with TiO_(2)as the carrier,and the treatment effect was the best among the catalysts made.XRD and SEM characterization results showed that the big catalyst surface is favorable for the dispersion of activity center.The pure Cu-Mn-Ce catalyst has excellent activity through the interaction of metal carrier to adjust the interface electronic structure and the introduction of TiO_(2)better maintains the activity and improves the thermal stability.
作者
俞梦楠
吴家豪
黄俊
王戈宣
邓呈逊
俞志敏
YU Meng-nan;WU Jia-hao;Huang Jun;WANG Ge-xuan;DENG Chen-xun;YU Zhi-min(Hefei University,Hefei 230601 China)
出处
《新余学院学报》
2023年第4期53-59,共7页
Journal of Xinyu University
基金
安徽省科技重大专项项目“江淮地区水稻田重金属和农药污染监测和治理修复技术集成研究与应用示范”(202003a06020024)
合肥市关键共性技术研发项目“复合污染场地土壤及地下水原位协同修复关键技术研究与应用”(2021GJ063)
安徽高校自然科学研究项目重点项目“多孔芳香骨架材料对水中典型离子液体的吸附去除机制研究”(KJ2021A1011)。
