懸濁TiO_2触媒を用いたCN^-イオンの酸化反応 Photocatalytic Oxidation Decomposition of Cyanide Ion Using Suspended TiO_2 Catalysts

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著者

    • 佐貫 須美子 SANUKI Sumiko
    • 富山大学工学部 物質生命システム工学科 Department of Material Systems Engineering and Life Science, Faculty of Engineering, Toyama University
    • 持舘 正輝 MOTTATE Masateru
    • 富山大学大学院理工学研究科 物質生命システム工学専攻 Department of Material Systems Engineering and Life Science, Faculty of Engineering, Toyama University

抄録

Photocatalytic oxidation of cyanide ion was investigated using two type of TiO<SUB>2</SUB> catalysts; Sample A, fine powder of anatase and rutile, and Sample B, pure anatase ultrafine powder. Cyanide ion was oxidized to CNO<SUP>-</SUP>, and subsequently to NO<SUB>3</SUB><SUP>-</SUP> and CO<SUB>3</SUB><SUP>2-</SUP> ions with both catalysts. With Sample A, CN<SUP>-</SUP> oxidation proceeded faster at higher initial concentration of CN<SUP>-</SUP> and at lower initial concentration of KOH. In contrast, with Sample B, CN<SUP>-</SUP> oxidation was faster when initial concentration of CN-, but KOH initial concentration effect appeared reversely. From there finding the authors proposed the different routes for sample A and B. On the other hand, the oxidation of CNO<SUP>-</SUP> was faster despite of type of catalyst was used when initial KOH concentration was low. In the experimental range of present work, suitable range of quantity of photocatalyst used exists, and UV intensity affect linearly for oxidation of CN<SUP>-</SUP> to CNO<SUP>-</SUP>.

収録刊行物

  • Journal of MMIJ : journal of the Mining and Materials Processing Institute of Japan  

    Journal of MMIJ : journal of the Mining and Materials Processing Institute of Japan 123(3), 110-116, 2007-03-25 

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10018900167
  • NII書誌ID(NCID)
    AA12188381
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    18816118
  • NDL 記事登録ID
    8771339
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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