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Selective catalytic reduction of NO with NH3 over manganese substituted iron titanate catalyst: Reaction mechanism and H2O/SO2 inhibition mechanism study

机译：锰取代的钛酸铁催化剂上NH3选择性催化还原NO的反应机理及H2O / SO2抑制机理的研究

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Selective catalytic reduction (SCR) of NO with NH3 over Mn substituted iron titanate catalyst (Fe-0 75 Mn0 25TiOx) was fully investigated using in situ diffuse reflectance infrared Fourier transform spectroscopy. At relatively low temperatures, both ionic NH4+ and coordinated NH3 contributed to the SCR reaction, and both bridging nitrate and monoclentate nitrate were confirmed to be the reactive nitrate species In the SCR reaction condition. surface NH4NO3 species was formed as intermediate species and its reactivity was also proved. An NH3-SCR mechanism over Fe0 75Mn0 25TiOx at low temperatures was proposed accordingly, in which the reduction of NH4NO3 by NO was possibly the rate-determining step. Due to the mild and reversible inhibition effect of H2O on NH3/NOx adsorption, the SCR activity decline in the presence of H2O was also slight and recoverable, however, the inhibition effect of SO2 was much more intense and irreversible, because the formation of nitrate species was totally inhibited by the formation of sulfate, resulting in the cut-off of the SCR reaction pathway at low temperatures (C) 2010 Elsevier B V All rights reserved

机译：使用原位漫反射红外傅里叶变换光谱技术对Mn取代的钛酸铁催化剂（Fe-0 75 Mn0 25TiOx）上的NH3选择性催化还原（SCR）进行了研究。在相对较低的温度下，离子型NH4 +和配位的NH3均对SCR反应有贡献，并且在SCR反应条件下，桥连的硝酸盐和硝酸单单硝酸盐均被认为是反应性硝酸盐。表面NH4NO3物种形成为中间物种，并证明了其反应活性。据此提出了在Fe0 75Mn0 25TiOx上低温下的NH3-SCR机理，其中NO还原NH4NO3可能是决定速率的步骤。由于H2O对NH3 / NOx吸附的抑制作用温和且可逆，因此在H2O存在下SCR活性下降也很小且可恢复，但是SO2的抑制作用更强烈且不可逆，因为硝酸盐的形成物种被硫酸盐的形成完全抑制，导致在低温下切断SCR反应路径（C）2010 Elsevier BV版权所有

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Liu Fudong; He Hong;
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1. Selective catalytic reduction of NO with NH3 over manganese substituted iron titanate catalyst: Reaction mechanism and H2O/SO2 inhibition mechanism study [J] . Fudong Liu, Hong He Catalysis Today . 2010,第3a4期

机译：锰取代铁钛酸酯催化剂上NH3选择性催化还原NO的反应机理及H2O / SO2抑制机理的研究
2. Effect of H2O and SO2 on the Selective Catalytic Reduction of NO with NH3 Over Ce/TiO2 Catalyst: Mechanism and Kinetic Study [J] . Xiao Xin, Xiong Shangchao, Shi Yijie, The journal of physical chemistry, C. Nanomaterials and interfaces . 2016,第2期

机译：H2O和SO2对Ce / TiO2催化剂上NH3选择性催化还原NH 3的影响：机理和动力学研究
3. Effect of manganese substitution on the structure and activity of iron titanate catalyst for the selective catalytic reduction of NO with NH3 [J] . Fudong Liu, Hong He, Yun Ding Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications . 2009,第1a2期

机译：锰取代对钛铁催化剂对NH 3选择性催化还原NO的结构和活性的影响
4. Influence of sulfation on the iron titanate catalyst for the selective catalytic reduction of NO with NH3 [C] . Fudong Liu, Kiyotaka Asakura, Hong He, ICEC 2010;International conference on environmental catalysis . 2010

机译：硫酸盐对钛铁催化剂对NH 3选择性催化还原NO的影响
5. Characterization and reaction mechanism for the selective catalytic reduction of nitrogen oxides using natural and copper modified clay catalysts with ammonia as a reducing agent. [D] . Corral-Avitia, Alba Yadira. 2001

机译：使用天然和铜改性的粘土催化剂，以氨为还原剂，选择性催化还原氮氧化物的表征和反应机理。
6. Highly selective catalytic reduction of NO via SO2/H2O-tolerant spinel catalysts at low temperature [O] . Xuanxuan Cai, Wei Sun, Chaochao Xu, -1

机译：通过耐SO2 / H2O的尖晶石催化剂在低温下高选择性催化还原NO
7. Effect of manganese substitution on the structure and activity of iron titanate catalyst for the selective catalytic reduction of NO with NH3 [O] . Liu Fudong, He Hong, Ding Yun, 2009

机译：锰取代对钛铁催化剂对NH 3选择性催化还原NO的结构和活性的影响

Selective catalytic reduction of NO with NH3 over manganese substituted iron titanate catalyst: Reaction mechanism and H2O/SO2 inhibition mechanism study

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