多孔質な二酸化チタンペレットを用いたトリクロロエチレンおよびテトラクロロエチレンの光触媒分解反応 Photocatalytic Degradation of Tri- and Tetrachloroethylene on Porous TiO_2 Pellets

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Abstract

<p>The photo-assisted catalytic degradations of trichloroethylene (TCE) and tetrachloroethylene (PCE) were studied in a tubular photoreactor packed with TiO<sub>2</sub> pellets prepared by sol-gel method. The experiments were performed at 32°C in a non-circulating mode. Comparison with the ethylene degradation reveals that TCE and PCE were degraded more efficiently than ethylene. However, only 48% of TCE or 57% of PCE was converted to HCl and CO<sub>2</sub> whereas 95% of ethylene was mineralized. Phosgene, CHCl<sub>3</sub> and dichloroacetic acid were detected from the photodegradation of TCE while that of PCE yielded phosgene, CCl<sub>4</sub> and trichlroacetic acid. Phosgene in the effluent gas stream was completely removed by passing through water. The reaction mechanism to form these chlorinated products is discussed.</p>

Journal

  • Electrochemistry

    Electrochemistry 70(6), 412-415, 2002-06-05

    The Electrochemical Society of Japan

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Codes

  • NII Article ID (NAID)
    10008573425
  • NII NACSIS-CAT ID (NCID)
    AN00151637
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    13443542
  • NDL Article ID
    6179856
  • NDL Source Classification
    ZP1(科学技術--化学・化学工業)
  • NDL Call No.
    Z17-14
  • Data Source
    CJP  NDL  J-STAGE 
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