Selective Catalytic Reduction of NOx by NH3 over Mn-Promoted V2O5/TiO2 Catalyst
Selective Catalytic Reduction of NOx by NH3 over Mn-Promoted V2O5/TiO2 Catalyst
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Mn 促进的 V2O5/TiO2 催化剂上 NH3 选择性催化还原 NOx
DOI：
10.1021/ie501887f
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发表时间：
2014-08-20
影响因子：
4.2
通讯作者：
Zhu, Junzhi
中科院分区：
文献类型：
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作者：
Liu, Zhiming;Li, Yuan;Zhu, Junzhi
研究了Mn对V2O5/TiO2NH3(NH3-SCr)选择性催化还原NOx催化剂性能的影响。结果表明，添加Mn能显著提高V2O5/TiO2光催化剂在400℃以下的NH3-SCR反应活性，其氧化还原循环(V4++Mn4+V5++Mn3+)是催化剂高催化脱氮(X)性能的关键。氧化还原循环促进NH3和NO的吸附和活化，形成更多的活性中间体(NH4+、配位NH3、NO2和单齿硝酸盐物种)，从而促进NH3-SCR的进行。
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.