Oxidation characterization of VOCs(volatile organic compounds) over pt and ir supported catalysts

Pt와 Ir을 담지한 촉매에 의한 휘발성유기화합물들의 산화특성

  • Kim, Moon-Chan (Department of Environmental Engineering, Cheongju University) ;
  • Yoo, Myong-Suk (Department of Environmental Engineering, Cheongju University)
  • 김문찬 (청주대학교 이공대학 환경학부) ;
  • 유명숙 (청주대학교 이공대학 환경학부)
  • Received : 2004.09.30
  • Accepted : 2005.03.03
  • Published : 2005.04.25


Volatile organic compounds (VOCs) have been recognized as major contributor to air pollution. Catalytic oxidation in VOCs can give high efficiency at low temperature. In this study, monometallic Pt, Ir and bimetallic Pt-Ir were supported to $TiO_2$. Xylene, toluene and methyl ethyl ketone (MEK) were used as reactants. The monometallic or bimetallic catalysts were prepared by the excess wetness impregnation method and characterized by XRD, XPS and TEM analysis. Result reveal that Pt catalyst has higher conversion than Ir catalyst and Pt-Ir bimetallic catalysts. The existence of multipoint actives in, Pt-Ir bimetallic catalysts gives improved performance for the Pt metalstate. Bimetallic catalysts have higher conversion for VOCs than monometallic ones. The addition, VOCs oxidation follows first order kinetics. The addition of small amount of Ir to Pt promotes oxidation conversion of VOCs.


Grant : 나노 금속산화물 촉매제조에 의한 저온 산화성 우수한 촉매 개발

Supported by : 한국산업기술재단


  1. J. C. S. Wu, Z. A. Lin, F. M. Tsai, J. W. Pan, 'Low-temperature complete oxidation of BTX on Pt/activated carbon catalysts', Cat. Today, 63, 419-426(2000) https://doi.org/10.1016/S0920-5861(00)00487-9
  2. K. D. Schierbaum, S. Fischer, M. C. Torquemada, J. L. de Segovia, E. Roman, J. A. Martin- Gago, 'The interaction of Pt with $TiO_2$ (110) surface: a comparative XPS, UPS, ISS, and ESD study', Surf. Science, 345, 261-273(1996) https://doi.org/10.1016/0039-6028(95)00887-X
  3. 환경부, '악취물질 발생원관리방안 개선을 위한 조사연구,' 208-210(2001)
  4. J. C. Yang, Y. C. Kim, Y .G. Shul, C. H. Shin, T. K. Lee, 'Characterization of photoreduced $Pt/TiO_2$ and decomposition of dichloroacetic acid over photoreduced $Pt/TiO_2$ catalysts', App. Surface. Science, 121/122, 525-529(1997) https://doi.org/10.1016/S0169-4332(97)00359-0
  5. 조영일, '반응공학', 형설출판사, 61-68(1982)