NaY分子筛担载FeSO<sub>4</sub>催化剂用于氨气还原NO<sub>x</sub>的性能

REN Wen; ZHAO Bo; ZHUO Yuqun; CHEN Changhe

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NaY分子筛担载FeSO₄催化剂用于氨气还原NO_x的性能

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- NaY分子筛担载FeSO₄催化剂用于氨气还原NO_x的性能
- CIESC Journal Issue 2, Pages: 362-368(2011)
- 作者机构：
  
  清华大学热能工程系，热科学与动力工程教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：
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- Online First：05 February 2011，
  
  Published：05 February 2011
- 稿件说明：
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REN Wen, ZHAO Bo, ZHUO Yuqun, et al. NaY分子筛担载FeSO₄催化剂用于氨气还原NO_x的性能[J]. CIESC Journal, 2011, (2): 362-368.
DOI：

REN Wen, ZHAO Bo, ZHUO Yuqun, et al. NaY分子筛担载FeSO₄催化剂用于氨气还原NO_x的性能[J]. CIESC Journal, 2011, (2): 362-368. DOI：

摘要

Abstract

This paper focuses on the NO reduction by ammonia via FeSO4 catalyst supported by molecular sieve in a fixed bed reactor at 400℃.The experimental results indicate that the catalyst has immediate catalytic effect on NO reduction.Due to its improved physical structure

the catalyst improves the NO reduction rate by 20% compared with pure FeSO4.The effects of preparation conditions on catalytic activity

including the mix ratio

impregnation agent and impregnation time etc.

are investigated. Mossbauer spectroscopy is used for the study.It is found that Fe2+ is oxidized to Fe3+ during the preparation and most FeSO4 is transferred to Fe(OH)SO4 and Fe2O (SO4)2.Fe(OH)SO4 is better than the other speices in NO reduction and the ratio of different species is related to the water and oxygen content in atmosphere.The results of in-situ FTIR indicate that Fe is the reaction centre.NH3 is absorbed on the catalyst and reacts with NO

which can be explained by Eley-Rideal mechanism.Compared with other commercial catalysts

FeSO4 demonstrates great industrial potentials because of its low cost and excellent catalytic effect at high space velocity.

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NaY分子筛担载FeSO4催化剂用于氨气还原NOx的性能

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NaY分子筛担载FeSO₄催化剂用于氨气还原NO_x的性能