华中师范大学学报（自然科学版）2017，Vol.51Issue(3)：317-323,334,8.
新型铜铈复合材料的制备及其脱硝性能的研究
Preparation of novel Cu-Ce composited material and its performance of deNOx
摘要
Abstract
CuO/CeO2 composited catalysts were successfully synthesized by impregnation and precipitate-hydrothermal method,respectively.The prepared samples were characterized by powder X-Ray diffraction (XRD),scanning electron microscopy (SEM),energy dispersive X-Ray spectroscopy (EDX) and N2 adsorption-desorption measurements.The CuO/CeO2 composites prcparcd by precipitate-hydrothermal method exhibited better crystallinity than that prepared by impregnation which mainly existed in amorphous state.Both types of CuO nanoparticles were well dispersed on the surface of CeO2 and the corresponding size obviously decreased.The CuO/CeO2 composite prepared by precipitate-hydrothermal method formed an even and compact mesoporous structure with interconnected pore channels,while the composited catalyst prepared by impregnation had a narrow pore size distribution.The deNO.x activities of C3H6 SCR over different catalysts were tested under different temperatures.The results indicated that both the composited catalysts prepared by different methods showed higher catalytic activities than that of single component.Moreover,the composited material prepared by precipitate-hydrothermal method exhibited stronger synergistic effect with the maximum NO conversion rate of 74％ at 350 ℃C.It was probably due to the well dispersion of CuO species on CeO2 surface,promoting the formation of a special porous structure.It is beneficial for the heterogeneous catalytic reaction,amd thus enhancing the synergistic effect and catalytic activities.关键词
C3H6-SCR/CuO/CeO2/协同作用/脱硝Key words
C3H6-SCR/CuO/CeO2/synergistic effect/deNOx分类
化学化工引用本文复制引用
谢鹏,聂天明,邓黎丹,陈嵘..新型铜铈复合材料的制备及其脱硝性能的研究[J].华中师范大学学报（自然科学版）,2017,51(3):317-323,334,8.基金项目
国家自然科学基金项目(21171136,21671153) （21171136,21671153）
湖北省教育厅优秀中青年科技创新团队项目(T201606). （T201606）
