二酸化チタン光触媒を用いたクロロエチレン混合物の気相分解反応 Photocatalytic Degradation of Gaseous Chloroethylene Mixtures Using UV-illuminated Titanium Dioxide

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Abstract

<p>The gas-phase photocatalytic decomposition of individual- and two-component mixtures of chloroethylenes using near-UV-illuminated TiO<sub>2</sub> was studied. The apparent quantum efficiencies for the degradation of <i>cis</i>-1,2-dichloro- (0.42), trichloro- (9.6), and tetrachloroethylene (10.6) were found to increase with the number of chlorine substituents. <i>cis</i>-1,2-Dichloro- and trichloroethylene in the presence of tetrachloroethylene decomposed with higher quantum efficiency, specifically, 1.6 and 11.7, respectively. The decomposition of <i>cis</i>-1,2-dichloroethylene in the mixtures was remarkably promoted, while the apparent quantum efficiency of tetrachloroethylene to function as an accelerator showed a decrease for the decomposition with <i>cis</i>-1,2-dichloroethylene (3.6) or with trichloroethylene (9.1). These findings were explained in terms of the presence of chlorine atoms in photochemical and photocatalytic reactions.</p>

Journal

  • Electrochemistry

    Electrochemistry 70(6), 421-424, 2002-06-05

    The Electrochemical Society of Japan

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Codes

  • NII Article ID (NAID)
    10008573469
  • NII NACSIS-CAT ID (NCID)
    AN00151637
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    13443542
  • NDL Article ID
    6179910
  • NDL Source Classification
    ZP1(科学技術--化学・化学工業)
  • NDL Call No.
    Z17-14
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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