摘要
采用分步等体积浸渍法制备了Mn/Ba/Al2O3催化剂,并用XRD和FT-IR等方法进行表征分析,用TPD研究了催化剂对NOx的储存活性和释放特性.在所制备的Mn/Ba/Al2O3,K/Ba/Al2O3,Ce/Ba/Al2O3和Na/Ba/Al2O3催化剂中,Mn/Ba/Al2O3催化剂吸附储存NOx的能力最大.分析了Mn/Ba/Al2O3催化剂的最佳制备条件.
The Mn/Ba/Al2O3 catalysts were prepared by equal volume impregnation method and characterized by XRD and FT-IR. The performance of NOx oxidation-storage and desorption over Mn/Ba/Al2O3 catalyst were investigated by TPD. The Mn/Ba/Al2O3 catalysts were doped with Mn,Na,K,Ce, the best catalyst was Mn/Ba/Al2O3, which had large NOx storage capacity. And then, the optimal conditions of Mn/Ba/Al2O3 catalyst were explored.
出处
《材料研究与应用》
CAS
2008年第4期383-386,共4页
Materials Research and Application
基金
广东省自然基金项目(8151009101000025)
广东省科技计划项目(2007B030102006)
广州市教育局科技计划项目(62008)
关键词
柴油车尾气
氮氧化物
吸附
diesel engine exhaust
nitrogen oxide
adsorption
