摘要
以蜂窝陶瓷为载体,铜锰氧化物为活性组分,CeO_(2)为助剂,通过浸渍法制备CuMnO_(x)-CeO_(2)/CC催化剂,利用氮吸附、X射线衍射、扫描电镜、热重4种手段对催化剂的结构进行表征,并结合固定催化床考察了催化剂对萘、菲、芘3种多环芳烃的催化氧化性能。结果表明:19.1%CuMnO_(x)-CeO_(2)/CC的催化氧化性能最佳,其对萘、菲、芘的催化率分别达到了69%、64%和63%,SEM和XRD结果也显示19.1%CuMnO_(x)-CeO_(2)/CC时活性组分在载体表面的分散达到单层分散阙值,生成了铜锰尖晶石,铜锰尖晶石的存在可以显著的提高催化剂的性能。
The CuMnOx-CeO_(2)/CC catalyst was prepared by impregnation method with honeycomb ceramic as carrier,copper manganese oxide as active component and CeO_(2) as auxiliary agent.The structure of naphthalene,phenanthrene,and pyrene was investigated for catalytic oxidation of naphthalene,phenanthrene,and pyrene.The results showed that the catalytic oxidation performance of 19.1%CumNox-CeO_(2)/CC was the best,and the catalytic rates of naphthalene,phenanthrene and pyrene reached 69%,64%and 63%,respectively.SEM and XRD results also showed that the dispersion of active components on the surface of the carrier reached the single-layer dispersion threshold at 19.1%CumNox-CeO_(2)/CC.Cu-Mn spinel was formed,and the presence of Cu-Mn spinel could significantly improve the performance of the catalyst.
作者
单龙
徐菲菲
王玲
Shan Long;Xu Feifei;Wang Ling(Jiangsu Yancheng Environmental Monitoring Center,Yancheng,Jiangsu 224002,China;Yancheng Meteorological Bureau,Yancheng,Jiangsu 224005,China)
出处
《绿色科技》
2022年第18期183-187,共5页
Journal of Green Science and Technology
关键词
蜂窝陶瓷
二氧化铈
催化氧化
多环芳烃
结构表征
honeycomb ceramics
cerium dioxide
catalytic oxidation
polycyclic aromatic hydrocarbons
structural characterization
