Effect of preparation methods on structures and performance of MnOx/TiO2 catalyst for low-temperature NH3-SCR

HUANG Haifeng; ZHANG Feng; LU Hanfeng; CHEN Yinfei

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Effect of preparation methods on structures and performance of MnO_x/TiO₂ catalyst for low-temperature NH₃-SCR

更新时间：2025-12-10

- Effect of preparation methods on structures and performance of MnO_x/TiO₂ catalyst for low-temperature NH₃-SCR
- CIESC Journal Issue 1, Pages: 80-85(2010)
- 作者机构：
  
  1. 浙江工业大学生物与环境工程学院
  2. 浙江工业大学化学工程与材料科学学院，绿色化学合成技术国家重点实验室培育基地
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 January 2010，
  
  Published：05 January 2010
- 稿件说明：
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HUANG Haifeng, ZHANG Feng, LU Hanfeng, et al. Effect of preparation methods on structures and performance of MnO_x/TiO₂ catalyst for low-temperature NH₃-SCR[J]. CIESC Journal, 2010, (1): 80-85.
DOI：

HUANG Haifeng, ZHANG Feng, LU Hanfeng, et al. Effect of preparation methods on structures and performance of MnO_x/TiO₂ catalyst for low-temperature NH₃-SCR[J]. CIESC Journal, 2010, (1): 80-85. DOI：

摘要

采用浸渍法、沉积法以及共沉淀法制备了MnOx/TiO2催化剂。运用XRD、BET、FTIR、H2-TPR和总酸量等技术对催化剂进行了表征，发现以共沉淀法制备的MnOx/TiO2催化剂具有最大的比表面积、孔体积和总酸量，孔径分布最集中，MnOx可以在TiO2表面高度分散。NH3-SCR脱硝活性表明，共沉淀法制备的MnOx/TiO2催化剂脱硝活性最好，当Mn负载量为20%时，高空速（60000 h-1）下，催化剂于140℃时对NO去除率可达92.9 %。

Abstract

MnOx/TiO2(i)，MnOx/TiO2(a) and MnOx/TiO2(c) catalysts were prepared by the impregnation，aggradation and coprecipitation methods respectively，and their properties were characterized with XRD

BET，FTIR

H2-TPR and n-butylamine titration.The results showed that MnOx/TiO2(c) had the largest BET surface area

pore volume and acidity

and the most concentrated pore size distribution and the best dispersion of MnOx on the surface of catalyst. The experiment results of NH3-SCR indicated that MnOx/TiO2 prepared by the coprecipitation method showed the best performance.The catalyst with 20% Mn content yielded 92.9% NO conversion at 140℃ at a space velocity of 60000 h-1.

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