化工进展2016，Vol.35Issue(12)：3919-3927,9.DOI:10.16085/j.issn.1000-6613.2016.12.027
载体结构对锡铁负载型催化剂脱硝性能的影响
Effect of pore structure on the performance of Sn-Fe supported catalyst in denitration
陈凯歌 1肖峰 2蒋晓萍 3许琦3
作者信息
- 1. 常州大学石油化工学院，江苏常州213000
- 2. 盐城工学院，江苏盐城 224000
- 3. 盐城工学院，江苏盐城 224000
- 折叠
摘要
Abstract
Four catalyst supports of different pore structures,namely attapulgite(ATP),activated carbon (AC),mesoporous silica(MCM-41)and titanium dioxide(TiO2),were used to prepare a series of Sn-Fe supported catalysts by the hydrothermal synthesis method with the Fe2O3 as active component,and SnO2 as auxiliary active component. The materials before and after preparation were characterized by BET and SEM. The denitration performance of the prepared catalysts for artificial flue gas were tested in a catalyst evaluation device in a temperature range of(80—280℃)and space velocity range of(32000—48000h–1). Meanwhile, the impact of SO2 and H2O on the catalyst(1/2SnFe/ATP)was investigated. The results showed that carriers might provide a large number of Brønsted acid sites,which was beneficial for the gas adsorption reaction. Among all the test catalysts,the 1/2SnFe/ATP had the best SCR denitration performance. At 200℃,the conversion of NO could reach by 96.4%. It was also found,when there was only SO2,the NO removal efficiency decreased slowly,and would still be higher than 85% if SO2 input was cut off. But when H2O and SO2were simultaneously added,the NO removal efficiency fell sharply and would went back to above 70% if H2O and SO2 input was cut off.关键词
载体结构/脱硝/负载型催化剂/选择性催化还原Key words
support structure/denitration/supported catalysts/selective catalytic reduction(SCR)分类
资源环境引用本文复制引用
陈凯歌,肖峰,蒋晓萍,许琦..载体结构对锡铁负载型催化剂脱硝性能的影响[J].化工进展,2016,35(12):3919-3927,9.
