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Characteristics of NOx Reduction Using V2O5 - TiO2Catalyst Coated on Ceramic Foam Filters  

Han Yoseop (한양대학교 지구환경시스템공학과)
Kim Hyunjung ((주)마이크로포어)
Park Jaikoo (한양대학교 지구환경시스템공학과)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.20, no.6, 2004 , pp. 773-781 More about this Journal
Abstract
Ceramic foams prepared from silica -clay were coated with TiO$_2$ and V$_2$O$_{5}$ catalysts for selective catalytic reduction of NOx with NH$_3$. The effects of V$_2$O$_{5}$ loading, reaction temperature, space velocity, and oxygen content on NOx reduction with NH$_3$ were mainly investigated. Also, the NOx reduction characteristics of V$_2$O$_{5}$ and V$_2$O$_{5}$ -TiO$_2$ filters were compared when sulfur dioxide exists. From the results, the optimal NOx reduction with the maximum reduction efficiency of 91 % could be performed under the condition with V$_2$O$_{5}$ loading 6.0 wt. %, reaction temperature 35$0^{\circ}C$, space velocity 6,000h$^{-1}$ , and oxygen content 5%. And, the V$_2$O$_{5}$ -TiO$_2$ filters have shown higher NOx reduction efficiency and acid resistance against sulfur dioxide than the V$_2$O$_{5}$ filters.
Keywords
Ceramic foam; $V_2O_5-TiO_2$catalyst; NOx reduction with $NH_3$; $SO_2;
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