催化作用
选择性催化还原
价(化学)
微观结构
锑
无机化学
化学
兴奋剂
化学工程
钝化
氧化态
烟气
化学状态
氧化物
材料科学
有机化学
结晶学
X射线光电子能谱
工程类
光电子学
图层(电子)
作者
Shuang-Shuang Lv,Xianlong Zhang,Haoyang Dong,Ji‐Long Shi,Xinyu Wang
标识
DOI:10.1002/ceat.202300148
摘要
Abstract Manganese‐antimony composite oxide catalysts were prepared for use in low‐temperature selective catalytic reduction of flue gas, by adopting the strategy of passivation to regulate the valence state of the active component and control catalytic activity. Activity evaluation results found that MnSb 0.36 O y delivered 80 % NO conversion in the presence of SO 2 at 200 °C, and nearly 90 % conversion at 250 °C. Doping with Sb changed the surface micromorphology, resulting in a perforated porousness layered foam with a porous structure of tens of nanometers, which was conducive to molecular mass transfer of the reaction gas. Doping with Sb regulated the valence state of the active MnO x component, which diminished catalytic oxidation of SO 2 , thus promoting catalyst stability and limiting the toxic effect of SO 2 .
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