燃料化学学报2018，Vol.46Issue(2)：225-232,8.
Fe-Cu/ZSM-5催化剂的NH3-SCR脱硝性能
Performance of Fe-Cu/ZSM-5 catalyst in the DeNOx process via NH3-SCR
摘要
Abstract
A series of Fe-Cu/ZSM-5 catalysts with different Fe/Cu molar ratios were prepared by impregnation method and characterized by XRD,H2-TPR,NH3-TPD and in situ DRIFTS;their performance in the denitrification (de-NOx) process via NH3-SCR was investigated.The results showed that the bimetallic modified Fe-Cu/ZSM-5 catalysts have a broad active temperature window.Especially,the Fe-Cu/ZSM-5 1∶4 catalyst with a Fe/Cu molar ratio of 1∶4 displays the highest activity;over it,the deNOx efficiency reaches the maximum of 99.46％ at 335 ℃ and keeps above 90％ at 250-450 ℃.Copper and iron species,present as amorphous oxides,are finely dispersed on the catalyst surface and the bimetallic modified catalysts retain the crystal structure of ZSM-5.The Fe-Cu/ZSM-5 1∶4 catalyst exhibits abundant acid sites and excellent redox performance.E-R mechanism and L-H mechanism may coexist during the NH3-SCR reaction under certain temperature;moreover,the onset temperature of E-R mechanism is much lower than that of L-H mechanism and the denitration reaction may be ignited at 200 ℃.关键词
Fe-Cu/ZSM-5/NH3-SCR/脱硝/反应机理/in situ DRIFTSKey words
Fe-Cu/ZSM-5/NH3-SCR/DeNOx/reaction mechanism/in situ DRIFTS分类
能源与动力引用本文复制引用
胡海鹏,王学涛,张兴宇,苏晓昕,杨晓东,史瑞华..Fe-Cu/ZSM-5催化剂的NH3-SCR脱硝性能[J].燃料化学学报,2018,46(2):225-232,8.基金项目
The project was supported by the National Natural Science Foundation of China (50806020),Henan Science and Technology Innovation Talent Program (Outstanding Youth) (114100510010) and Science and Technology Project of Science and Technology Department of Henan Province (152102210280).国家自然科学基金(50806020),河南省科技创新人才计划(杰出青年)(114100510010)和河南省科技攻关项目(152102210280)资助 （50806020）
