A Effect of H2O-H2 Pretreatment on VOCs Oxidation over Noble Catalysts on Titania

티타니아에 담지된 귀금속촉매의 H2O-H2 전처리에 따른 휘발성유기화합물 산화에 미치는 영향

  • Kim, Moon-Chan (Department of Environmental Engineering, Cheongiu University) ;
  • Ko, Sun-Hwan (Department of Environmental Engineering, Cheongiu University)
  • 김문찬 (청주대학교 이공대학 환경학부) ;
  • 고선환 (청주대학교 이공대학 환경학부)
  • Received : 2007.05.17
  • Accepted : 2007.09.11
  • Published : 2007.12.10

Abstract

In this study, noble metals (Pd, Ru, Ir) were supported to $TiO_2$ catalyst. In order to distribute metals uniformly, $H_2O-H_2$ pretreatment technique was used. Xylene, toluene, and MEK were used as reactants. The monometallic or bimetallic catalysts were prepared by the excess wetness impregnation method and were characterized by XRD, and XPS analysis. Pd-Ru, Pd-Ir bimetallic catalysts had multipoint active sites which improved the range of Pd metal state. Bimetallic catalysts had a higher conversion of VOCs than that of monometallic one. The effect of $H_2O-H_2$ pretreatment technique was the enhancement of uniform distribution of Pd particles and promotion of catalytic efficiency. In this study, addition of Ru and Ir metals to Pd promoted oxidation conversion of VOCs. In addition, $H_2O-H_2$ pretreatment promoted removal efficiency of VOCs on the $TiO_2$ support.

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