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Effect of Neodymium Addition on the Plate-type V2O5-MoO3/TiO2 Catalyst for Selective Catalytic Reduction of NO
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Affiliation:

1.Datang Nanjing Environmental Protection Technology Co,Ltd;2.School of Chemical Engineering,Nanjing University of Science and Technology

Clc Number:

X511

Fund Project:

The Fund Project for Transformation of Scientific and Technological Achievements of Jiangsu Province of China; China Postdoctoral Science Foundation Grant; Postdoctoral Grant Grog-ram of Jiangsu

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    Abstract:

    A series of plate-type V2O5-MoO3-Nd2O3/TiO2 catalysts with different amounts of neodymium were prepared to investigate the impact of neodymium addition on selective catalytic reduction (SCR) of NO with NH3. XRD, N2-adsorption, XPS, H2-TPR, Raman and NH3-TPD were carried out to characterize the catalysts. It was found that with the suitable addition of Nd (0.25% and 0.5%) to V2O5-MoO3/TiO2 catalyst not only brought to the improvement of the reduction property, but also increased the Oα/(Oα+Oβ) ratio of the catalyst, which leaded to the enhanced catalytic efficiency. However, when the content of Nd was excessive (0.75% and 1%), the acid sites of the catalysts decreased evidently. Accordingly, the catalytic performance of these catalysts was relatively low. What is more, the mechanical property of the catalyst declined when the content of Nd was excessive. Among the catalysts investigated, VMoNd(0.5%)/Ti catalyst had the best catalytic performance.

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[Huang Li, Zong Yuhao, Wang Hu, Chang Zhengfeng, Zhang Shule, Zhong Qin. Effect of Neodymium Addition on the Plate-type V2O5-MoO3/TiO2 Catalyst for Selective Catalytic Reduction of NO[J]. Rare Metal Materials and Engineering,2021,50(2):475~482.]
DOI:10.12442/j. issn.1002-185X.20200057

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History
  • Received:January 26,2020
  • Revised:April 20,2020
  • Adopted:April 26,2020
  • Online: March 09,2021
  • Published: