Applied Chemistry, Vol.9, No.1, 117-120, May, 2005
Al2O3, TiO2 담체종류별 Pt, PtRu 촉매의 산화특성
Oxidation Characterization over Pt, RtRu Supported on Al2O3 and TiO2
The volatile organic compounds(VOCs) have been recognized as major contributor to air pollution. The catalytic oxidation is one of the most important processes for VOCs destruction due to getting high efficiency at low temperature. In this study, mono metallic Pt and bimetallic Pt-Ru were supported to TiO2 and r-Al2O3. In order to distribute metals uniformly, Xylene, toluene and MEK were used as reactants. The mono metallic or bimetallic catalysts were prepared by the excess wetness impregnation method and were characterized by XRD, XPS, TEM and BET analysis. As a result, Pt-Ru bimetallic catalysts were showed higher conversion than Pt mono metallic catalyst. Pt-Ru bimetallic catalyst was showed highest conversion on the r-Al2O3 support. In the VOCs oxidation, Pt-Ru bimetallic catalyst had multi point active sites, so it improved the range of Pt metal state. Therefore, bimetallic catalysts were higher conversion of VOCs than mono metallic ones.