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

Pt와 Ir을 담지한 촉매에 의한 휘발성유기화합물들의 산화특성

  • Received : 2004.09.30
  • Accepted : 2005.03.03
  • Published : 2005.04.25

Abstract

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.

Keywords

volatile organic compounds (VOCs);PT-Ir;catalytic oxidation;bimetallic catalyst;low temperature

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Acknowledgement

Grant : 나노 금속산화물 촉매제조에 의한 저온 산화성 우수한 촉매 개발

Supported by : 한국산업기술재단