EFFECTS OF CHELATING AGENTS OF VANADIUM SALT ON PHYSICOCHEMICAL PROPERTIES AND CATALYTIC PERFORMANCES OF V2O5/TiO2 SCR CATALYST

LIU Chang-dong; YU Shuang-jiang; MIAO Xue; SHAN Liang; LIU Jun; PENG Yue; CHEN Jian-jun; LI Jun-hua

doi:10.13205/j.hjgc.202008029

Volume 38 Issue 8

Nov. 2020

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LIU Chang-dong, YU Shuang-jiang, MIAO Xue, SHAN Liang, LIU Jun, PENG Yue, CHEN Jian-jun, LI Jun-hua. EFFECTS OF CHELATING AGENTS OF VANADIUM SALT ON PHYSICOCHEMICAL PROPERTIES AND CATALYTIC PERFORMANCES OF V2O5/TiO2 SCR CATALYST[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 174-179,81. doi: 10.13205/j.hjgc.202008029

Citation:

LIU Chang-dong, YU Shuang-jiang, MIAO Xue, SHAN Liang, LIU Jun, PENG Yue, CHEN Jian-jun, LI Jun-hua. EFFECTS OF CHELATING AGENTS OF VANADIUM SALT ON PHYSICOCHEMICAL PROPERTIES AND CATALYTIC PERFORMANCES OF V₂O₅/TiO₂ SCR CATALYST[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 174-179,81. doi: 10.13205/j.hjgc.202008029

Citation:

LIU Chang-dong, YU Shuang-jiang, MIAO Xue, SHAN Liang, LIU Jun, PENG Yue, CHEN Jian-jun, LI Jun-hua. EFFECTS OF CHELATING AGENTS OF VANADIUM SALT ON PHYSICOCHEMICAL PROPERTIES AND CATALYTIC PERFORMANCES OF V₂O₅/TiO₂ SCR CATALYST[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 174-179,81. doi: 10.13205/j.hjgc.202008029

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EFFECTS OF CHELATING AGENTS OF VANADIUM SALT ON PHYSICOCHEMICAL PROPERTIES AND CATALYTIC PERFORMANCES OF V₂O₅/TiO₂ SCR CATALYST

doi: 10.13205/j.hjgc.202008029

1. Jiangsu Zhongchuangqingyuan Technology Co., Ltd, Yancheng 224000, China;
2. Yancheng Environmental Engineering Technology Research and Development Center, Tsinghua University, Yancheng 224000, China;
3. National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, China

Received Date: 2019-09-10

Abstract

Abstract

Based on commercial anatase TiO₂, three catalysts were prepared using different chelating agents of vanadium salt by wet impregnation, and then studied the catalytic performances of SCR. Characterizing measures including H₂-TPR, N₂ adsorption-desorption with BET method, NH₃-TPD, XRD, Raman, and UV-Vis DRS were conducted to investigate the physicochemical properties of V₂O₅/TiO₂ catalysts. It was found that the diverse chelating agents of vanadium salt had great impact on the valence states of vanadium and pH value of precursor solution. Nonetheless, within the test temperature ranges, there were no distinction on the SCR activity and N₂ selectivity. By means of disparate characterization methods, it was concluded that there was almost no difference among those three catalysts on specific surface area, pore structure, polymerization degree of vanadium oxides on the surface of TiO₂, H₂ activation energy and surface acidity. Meanwhile, the valence states of vanadium and pH value of precursor solution could not affect the catalytic performances of V₂O₅/TiO₂ SCR catalysts.
- chelating agents of vanadium salt,
- SCR,
- precursor solution,
- NO_x,
- catalyst,
- multiphase reaction,
- V₂O₅/TiO₂

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References(31)

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