Selective Catalytic Reduction of NOx by NH3 over Mn-Promoted V2O5/TiO2 Catalyst

被引：109
|
作者：
Liu, Zhiming [1 ]
Li, Yuan [1 ]
Zhu, Tianle [2 ]
Su, Hang [1 ]
Zhu, Junzhi [1 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
[2] Beihang Univ, Sch Chem & Environm, Beijing 100191, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2014年 / 53卷 / 33期
基金：
中国国家自然科学基金;
关键词：
NITRIC-OXIDE; SUPERIOR CATALYST; SCR; AMMONIA; REACTIVITY; CR; MANGANESE/TITANIA; CERIA; DRIFT; FTIR;
D O I：
10.1021/ie501887f
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The effect of Mn on the catalytic performance of V2O5/TiO2 catalyst for the selective catalytic reduction of NOx by NH3 (NH3-SCR) has been investigated in this study. It was found that the added Mn significantly enhanced the activity of V2O5/TiO2 catalyst for NH3-SCR below 400 degrees C. The redox cycle (V4+ + Mn4+ <-> V5+ + Mn3+) over Mn-promoted V2O5/TiO2 catalyst plays a key role for the high catalytic deNO(x) performance. The redox cycle promotes the adsorption and activation of NH3 and NO, forming more reactive intermediates (NH4+, coordinated NH3, NO2, and monodentate nitrate species), thus promoting the NH3-SCR to proceed.
引用
收藏
页码：12964 / 12970
页数：7
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