Effect of Chlorine on Direct Photodegradation of Phosgene in Gaseous Phase

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  • YAMAMOTO Shin
    Graduate School of Environment and Information Sciences, Yokohama National University
  • ITOH Kiminori
    Graduate School of Environment and Information Sciences, Yokohama National University
  • MURABAYASHI Masayuki
    Graduate School of Environment and Information Sciences, Yokohama National University

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Abstract

<p>The effect of Cl radical on direct photodegradation rates of phosgene was investigated using the circulation-type apparatus. Cl radical was hardly formed from molecular chlorine using a low-pressure mercury lamp, which had been employed for direct photodegradation of phosgene, because the spectrum of low-pressure mercury lamp is hardly absorbed by molecular chlorine. It was observed that Cl radical was formed from molecular chlorine by the irradiation from black-lights. Under presence of molecular chlorine and the irradiation from black-lights, significant increase in the rate constant of photodegradation of phosgene using low-pressure mercury lamp was observed. In addition small effect of increase of residence time in the reactor was observed.</p>

Journal

  • Electrochemistry

    Electrochemistry 70 (6), 425-428, 2002-06-05

    The Electrochemical Society of Japan

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