Title :
Adsorption of NO (or NH3) +O2 over the Commercial SCR Catalyst Characterized by EPR
Author :
Du Yun-gui ; Yun-tao, Li ; Qin, Zhong
Author_Institution :
Coll. of Resources & Environ. Sci., Chongqing Univ., Chongqing, China
Abstract :
The adsorption of reactants over the commerciallized SCR catalyst surface 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, and NH3 was adsorbed on Brönsted acid sites. The amounts of V4+ and super oxide ions were promoted at the presence of H2O and SO2 after adsorption. However, the intensity of Fe3+ decreased when H2O and SO2 were present, indicating the favorable effect of Fe3+ for anti-poisoning.
Keywords :
adsorption; catalysts; chemical technology; H2O; NO; SO2; anti-poisoning; commerciallized SCR catalyst surface; reactant adsorption; selective catalytic reduction; super oxide ion; Atmosphere; Commercialization; Ions; Temperature measurement; Thyristors; Water; X-ray scattering; EPR; commerciallized SCR catalyst; selective catalytic reduction (SCR);
Conference_Titel :
Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-61284-278-3
Electronic_ISBN :
978-0-7695-4350-5
DOI :
10.1109/CDCIEM.2011.492
