加熱による金属ハロゲン化物の活性ハロゲン生成能およびそれらとジベンゾ-p-ダイオキシンまたはジベンゾフランとの反応 Potentials of Active Halogen Evolution upon Heating Metal Halides and Reactions of the Active Halogen and Dibenzo-p-dioxin/dibenzofuran in an Air Stream

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The evolved gaseous samples from several metal halide particles upon heating at temperatures ranging from 200 to 500°C in a laboratory quarts tube reactor under dry air stream were analyzed to compare their potentials of active halogen formation. Total yields of the active halogen evolved were found to be one mole Cl per mole CuCl<sub>2</sub> and two moles Br per mole CuBr<sub>2</sub> at 300 °C for 30 min. A small amount of the active chlorine was detected when FeCl<sub>3</sub> was heated under the same conditions. However, FeCl<sub>2</sub>, SnCl<sub>2</sub>, SnCl<sub>4</sub>, ZnCl<sub>2</sub> and ZnBr<sub>2</sub> did not produced the active halogen upon heating at temperature ranging 200 to 500°C for 60 min.<br>The efficiency of DD and DF halogenation by CuCl<sub>2</sub> or CuBr<sub>2</sub>, and the distribution of halogenated DD/DF products were also measured using the tube reactor under the same pyrolysis conditions. At the gas velocity, corresponding to a resident time of 0.5 s in the reactor, monohalogenated DD/DF yields were largest, with yields decreasing with increasing DD/DF halogenation. The DD/DF halogenations were strongly favored at lateral sites, with the predominant halogenated DD/DF isomers within each homologue group those containing halogen substituents at only the 2,3,7,8 positions.

収録刊行物

  • 環境化学 : journal of environmental chemistry

    環境化学 : journal of environmental chemistry 17(1), 17-26, 2007-03-25

    Japan Society for Environmental Chemistry

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各種コード

  • NII論文ID(NAID)
    10018893973
  • NII書誌ID(NCID)
    AN10547099
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09172408
  • NDL 記事登録ID
    8756191
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学) // ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z16-2322
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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