CeO2 added V2O5/TiO2 catalyst prepared by chemical vapor condensation (CVC) and impregnation method for enhanced NH3-SCR of NOx at low temperature

Title
CeO2 added V2O5/TiO2 catalyst prepared by chemical vapor condensation (CVC) and impregnation method for enhanced NH3-SCR of NOx at low temperature
Authors
Woojoon ChaSheryl H. Ehrman정종수
Keywords
Chemical vapor condensation; Selective catalytic reduction; V2O5; TiO2; NOx
Issue Date
2016-01
Publisher
Journal of Environmental Chemical Engineering
Abstract
In this study, we confirm the role of CeO2 in promoting the catalytic activity of a selective catalytic reduction (SCR) catalyst, prepared using chemical vapor condensation (CVC)-TiO2 nanoparticles, and the effect of the V2O5-CeO2/CVC-TiO2 catalyst on the NH3-SCR of DeNOx with/without SO2 and water vapor process. The catalyst showed good SCR activity for NOx removal, and also exhibited enhanced SCR activity in the presence of SO2 and water vapor at low temperatures, significantly. In addition, the catalyst was characterized by various physicochemical analysis techniques. In summary, CeO2 existed in the amorphous (poor crystallinity) phase. The catalyst with added CeO2 contained more Ce3+ ions that provided more redox-active sites. CeO2 provided more surface chemisorbed oxygen, thus dramatically increasing reducibility, and more acid sites.
URI
http://pubs.kist.re.kr/handle/201004/58296
ISSN
22133437
Appears in Collections:
KIST Publication > Article
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