{"title":"Adsorption of NO (or NH3) +O2 over the Commercial SCR Catalyst Characterized by EPR","authors":"Du Yun-gui, Liang Yun-tao, Zhong Qin","doi":"10.1109/CDCIEM.2011.492","DOIUrl":null,"url":null,"abstract":"The adsorption of reactants over the commerciallized SCR catalyst suface was investigated by EPR, as well as the influence of H2O and SO2. The results showed that the V4+ over the catalyst could be oxidized under NO + O2 atmosphere, andNH3 was adsorbed on Brönsted acid sites. The amounts of V4+and super oxide ions were promoted at the presence of H2O andSO2 after adsorption. However, the intensity of Fe3+ decreased when H2O and SO2 were present, indicating the favorable effect of Fe3+ for anti-poisoning.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"2 1","pages":"1953-1956"},"PeriodicalIF":0.0000,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CDCIEM.2011.492","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The adsorption of reactants over the commerciallized SCR catalyst suface was investigated by EPR, as well as the influence of H2O and SO2. The results showed that the V4+ over the catalyst could be oxidized under NO + O2 atmosphere, andNH3 was adsorbed on Brönsted acid sites. The amounts of V4+and super oxide ions were promoted at the presence of H2O andSO2 after adsorption. However, the intensity of Fe3+ decreased when H2O and SO2 were present, indicating the favorable effect of Fe3+ for anti-poisoning.
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