Effect of Fe2O3 on surface properties and activities of V2O5-WO3/TiO2 catalysts

LIU Jianhua; YANG Xiaobo; ZHANG Chen; WU Fan; LI Zhong; XIA Qibin

doi:10.11949/j.issn.0438-1157.20151284

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Effect of Fe₂O₃on surface properties and activities of V₂O₅-WO₃/TiO₂ catalysts

更新时间：2025-12-10

- Effect of Fe₂O₃on surface properties and activities of V₂O₅-WO₃/TiO₂ catalysts
- CIESC Journal Issue 4, Pages: 1287-1293(2016)
- 作者机构：
  
  1. 华南理工大学化学与化工学院,广东,广州,510640
  2. 江苏肯创环境科技股份有限公司,江苏,常州,213161
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151284
  CLC： B333
- Online First：05 April 2016，
  
  Published：05 April 2016
- 稿件说明：
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LIU Jianhua, YANG Xiaobo, ZHANG Chen, et al. Effect of Fe₂O₃on surface properties and activities of V₂O₅-WO₃/TiO₂ catalysts[J]. CIESC Journal, 2016, (4): 1287-1293. DOI: 10.11949/j.issn.0438-1157.20151284.
DOI：

LIU Jianhua, YANG Xiaobo, ZHANG Chen, et al. Effect of Fe₂O₃on surface properties and activities of V₂O₅-WO₃/TiO₂ catalysts[J]. CIESC Journal, 2016, (4): 1287-1293. DOI: 10.11949/j.issn.0438-1157.20151284. DOI：

摘要

催化剂是选择性催化还原(SCR)脱硝技术的核心

研究Fe对钒钛系SCR催化剂脱硝活性及SO2/SO3转化率的影响具有重要意义。采用等体积浸渍法制备了不同Fe/V质量比的Fe2O3-V2O5-WO3/TiO2催化剂

并进行表征

研究Fe对钒钛系SCR催化剂脱硝活性及SO2/SO3转化率的影响

并讨论Fe对于钒钛系SCR催化剂表面性质的影响。结果表明

随着催化剂表面Fe2O3含量增加

催化剂的脱硝效率及二氧化硫氧化率均是先上升后下降

当Fe/V质量比为3.0时

催化剂的脱硝效率和二氧化硫氧化率均达到最大值91.78%、1.01%。XPS及H2-TPR结果表明

随着Fe2O3含量增加

催化剂表面钒活性组分的相对含量及V4+/V5+比减小

催化剂表面吸附氧(Oα)浓度增加

催化剂的氧化能力增强。NO-TPD结果表明

随着Fe2O3含量增加

催化剂表面吸附NO的能力增强。

Abstract

Effect of Fe on the denitration activity and sulfur dioxide oxidation rate of vanadium-titanium based SCR catalysts is worthy to be investigated. In this work

Fe2O3-V2O5-WO3/TiO2 catalysts with various mass ratios of Fe/V were prepared by incipient wetness impregnation method and characterized. The results showed that the denitration activity and sulfur dioxide oxidation rate of catalysts initially increased then decreased with the loading of Fe2O3. The highest denitration activity of 91.78% and sulfur dioxide oxidation ratio of 1.01% were achieved with a Fe/V mass ratio of 3.0. XPS and H2-TPR measurements showed that with the loading of Fe2O3

the content of active vanadium and V4+/V5+ ratio on the surface of catalysts decreased

while the relative-content of surface adsorption oxygen(Oα) increased hence the oxidation ability of catalysts enhanced. Moreover

the NO-TPD results showed that the capability of NO adsorption on catalyst surface enhanced with the loading of Fe2O3.

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