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Volume 38 Issue 5
Aug.  2020
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Article Contents
LIU Hai-yan, LI Dong, MIAO Xue, ZHU Yuan-yuan, LIU Xiao-feng, LV Ying, LI Jie, WU Ping-xia, PENG Yue, CHEN Jian-jun, LI Jun-hua. EFFECT OF PREPARATION METHODS OF CuO-WO3/TiO2 CATALYSTS ON NH3-SCR DENITRATION ACTIVITY[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 89-95. doi: 10.13205/j.hjgc.202005016
Citation: LIU Hai-yan, LI Dong, MIAO Xue, ZHU Yuan-yuan, LIU Xiao-feng, LV Ying, LI Jie, WU Ping-xia, PENG Yue, CHEN Jian-jun, LI Jun-hua. EFFECT OF PREPARATION METHODS OF CuO-WO3/TiO2 CATALYSTS ON NH3-SCR DENITRATION ACTIVITY[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 89-95. doi: 10.13205/j.hjgc.202005016

EFFECT OF PREPARATION METHODS OF CuO-WO3/TiO2 CATALYSTS ON NH3-SCR DENITRATION ACTIVITY

doi: 10.13205/j.hjgc.202005016
  • Received Date: 2019-10-10
  • xCuO-yWO3/TiO2 catalysts (x and y represent the mass fraction of CuO and WO3 in the sample, respectively) were prepared by sol-gel method and impregnation method, respectively, and the SCR denitration performance (NH3-SCR) of the catalysts was evaluated in a miniature fixed-bed quartz reactor. It was found that the 2CuO-6WO3/TiO2 catalyst by the sol-gel method had good denitration performance, and made NOx conversion rate over 90% in temperature range of 250~350 ℃, which activity was improved significantly compared with 2CuO-6WO3/TiO2 catalyst by impregnation method. The prepared catalysts were characterized by BET, XRD, H2-TPR, NH3-TPD and XPS. The results showed that for the 2CuO-6WO3/TiO2 catalyst prepared by sol-gel method, the specific surface area, the surface adsorbed oxygen, the redox potential and adsorption capacity of NH3 increased significantly than the catalyst prepared by the impregnation method. Therefore, the 2CuO-6WO3/TiO2 catalyst prepared by sol-gel method exhibited excellent NH3-SCR activity and high N2 selectivity.
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