Catalytic Performance of Fe/H-beta Catalyst Modified by Mn for NO<sub>x</sub> Decomposition at Low Temperature

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Catalytic Performance of Fe/H-beta Catalyst Modified by Mn for NO_x Decomposition at Low Temperature

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- Catalytic Performance of Fe/H-beta Catalyst Modified by Mn for NO_x Decomposition at Low Temperature
- Vol. 46, Issue 1, Pages: 131-134(2012)
- 作者机构：
  
  西安交通大学环境科学与工程系,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： X511
- Online First：10 January 2012，
  
  Published：2012
- 稿件说明：
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Catalytic Performance of Fe/H-beta Catalyst Modified by Mn for NO_x Decomposition at Low Temperature[J]. 2012, 46(1): 131-134.
DOI：

Catalytic Performance of Fe/H-beta Catalyst Modified by Mn for NO_x Decomposition at Low Temperature[J]. 2012, 46(1): 131-134. DOI：

摘要

通过Mn改性制备了Fe和Mn的质量比为1且Fe和Mn的质量分数均为5%(5%Fe-5%Mn/H-beta)的催化剂

通过氢气程序升温还原(H

-TPR)比较分析了Fe-Mn/H-beta、Fe/H-beta和Mn/H-beta催化剂中Fe和Mn的化学形态

考察了O

、SO

和H

O等反应条件对Fe-Mn/H-beta催化剂低温催化分解NO

的影响.结果表明

相比Fe/H-beta和Mn/H-beta

Fe-Mn/H-beta催化剂在富氧和低温条件下具有较好的催化活性

其中623 K下催化剂的活性最高

的转化率达到45%左右.Fe-Mn/H-beta催化剂中Fe和Mn的共存提高了Fe

和MnO

的含量.氧的存在促进了NO

催化分解

水蒸气和SO

对NO

催化分解有一定的抑制作用.

Abstract

Direct decomposition of NO

was investigated with 5%Fe-5%Mn/H-beta catalysts with equal weight of Mn and Fe. The chemical states of Fe and Mn in Fe-Mn/H-beta

Fe/H-beta

and Mn/H-beta catalysts were characterized by H

-TPR. The effects of O

and H

O on decomposition of NO

at low temperature with 5%Fe-5%Mn/H-beta catalysts were examined. The results indicate that the activity of Fe-Mn/H-beta is higher than that of Fe/H-beta or Mn/H-beta at rich oxygen and low temperature from 573 K to 673 K. The maximum NO

conversion is about 45% with 5%Fe-5%Mn/H-beta at 623 K. The presence of F

e in Fe-Mn/H-beta enhances the transformation of Mn

ions into Mn

ions

and the addition of Mn increases the amount of Fe

in Fe-Mn/H-beta. In addition

inhibition is not observed in NO

decomposition with Fe-Mn/H-beta while the presence of H

O and SO

inhibits the activity of Fe-Mn/H-beta.

关键词

Keywords

references

FORZATTI P. Temperature-programmed desorption/surface reaction(TPD/TPSR)study of Fe-exchanged ZSM-5 for selective catalytic reduction of Nitric oxide by ammonia[J]. Journal of Catalysis, 2001, 198(1): 20-28.

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Related Institution

State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University

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Catalytic Performance of Fe/H-beta Catalyst Modified by Mn for NOx Decomposition at Low Temperature

DOI：

摘要

Abstract

关键词

Keywords

references

Catalytic Performance of Fe/H-beta Catalyst Modified by Mn for NO_x Decomposition at Low Temperature