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http://dx.doi.org/10.9713/kcer.2012.50.5.772

Effects of Calcium on the Activity of V2O5/TiO2 Catalysts in SCR Processes  

Kim, Jin-Kil (Department of Chemical Engineering, Chungnam National University)
Park, Kwang-Hee (Department of Environmental Energy Systems Engineering, Graduate school of Kyonggi University)
Hong, Sung-Chang (Department of Environmental Energy Systems Engineering, Graduate school of Kyonggi University)
Lee, Eui-Dong (HANA I&E)
Kang, Yong (Department of Chemical Engineering, Chungnam National University)
Publication Information
Korean Chemical Engineering Research / v.50, no.5, 2012 , pp. 772-777 More about this Journal
Abstract
Factors acting on the deactivation of $V_2O_5/TiO_2$ catalysts were investigated in the selective catalytic reduction(SCR) process for long term operation. The activity of $V_2O_5/TiO_2$ catalysts was decreased rapidly after 8 months from the starting of operation in the selective catalytic reaction processes. From ICP-AES analysis, the deactivation of the used catalysts could be caused from the calcium component included in urea solution as a reducing agent. It was found from the $NH_3$-TPD experiments that the strong basic element like Ca component drastically affected the acidity of the $V_2O_5/TiO_2$ catalyst. The results gave an explanation on the reason why the component of Ca, even though its concentration is very low, could lead to the deactivation of $V_2O_5/TiO_2$ catalyst in the selective catalytic reaction processes.
Keywords
$V_2O_5/TiO_2$; Selective Catalytic Reduction; Catalyst Deactivation; $NH_3$-TPD;
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Times Cited By KSCI : 2  (Citation Analysis)
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