화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.107, 197-206, March, 2022
DOI10.1016/j.jiec.2021.11.045  Export Citation
Promotional effect of Ce in NH3-SCO and NH3-SCR reactions over Cu-Ce/SCR catalysts
Wenjie Liu, Yifei Long, Shinian Liu1, Yongyan Zhou2, Xin Tong, Yajie Yin, Xiaoyi Li, Kang Hu, and Jiangjun Hu†
  • School of Resource and Environmental Sciences, Wuhan University, Wuhan, Hubei 430079, PR China
  • 1China Southern Power Grid Technology Co., Ltd., Guangzhou 510080, PR China
  • 2Electric Power Research Institute of Guangdong Power Grid Co. Ltd., Guangzhou 510080, PR China
E-mail:
Commercial V-W-Ti catalysts were modified with Cu and different contents of Ce to remove slip ammonia and remaining nitrogen oxide from the end stage of SCR technology. The activities of NH3 oxidation by O2 (NH3-SCO) and NO reduction by NH3 (NH3-SCR) of these catalysts were examined from 150 to 400 ℃. The consequences indicated that the addition of Ce and Cu could considerably enhance NH3 oxidation and NO reduction capacity of the catalysts and Ce was conducive to reduce the detrimental effects of H2O and SO2. The characterization tests indicated that the surface active oxygen increased because of the interaction between V, Cu and Ce. Moreover, the loaded Ce and Cu contributed to enhance the surface acidity and redox property of SCR catalysts.
Keywords:Cu-Ce/SCR catalyst;Slip ammonia;NH3 oxidation;NO reduction
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