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Volume 38 Issue 5
Aug.  2020
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Article Navigation >  ENVIRONMENTAL ENGINEERING  > 2020  >  38(5): 89-95
HUANG Pan-pan, WANG Chen-chen, QIU Chun-sheng, SUN Li-ping, HU Shuai-long, ZHANG Yi-fan. OCCURRENCE, ENVIRONMENTAL RISK AND WATER QUALITY STANDARD OF PAEs IN WATER ENVIRONMENT[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 23-29. doi: 10.13205/j.hjgc.202005005
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
shu

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

doi: 10.13205/j.hjgc.202005016

  • 1. Tsinghua-Yancheng Environmental Engineering Technology Research and Development Center, Yancheng 224000, China;

  • 2. National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment, Tsinghua University, Beijing 100084, China

  • Received Date: 2019-10-10
    Abstract
  • 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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