化工学报2011，Vol.62Issue(2)：362-368,7.
NaY分子筛担载FeSO4催化剂用于氨气还原NOx的性能
Capability of molecular sieve-supported FeSO4 catalyst for selective catalytic reduction of Nox
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.关键词
脱硝/选择性催化还原/分子筛/FeSO4催化剂/空速Key words
denitrification/selective catalytic reduction/molecular sieve/FeSO4 catalyst/space velocity分类
化学化工引用本文复制引用
任雯,赵博,禚玉群,陈昌和..NaY分子筛担载FeSO4催化剂用于氨气还原NOx的性能[J].化工学报,2011,62(2):362-368,7.基金项目
国家重点基础研究发展计划项目(2006CB200300). （2006CB200300）
