紫外線照射下における亜リン酸水溶液の溶存酸素による酸化反応 Oxidation of Phosphite in Acidic Solutions with Dissolved Oxygen under UV Irradiation

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著者

    • 光野 純二 MITUNO Junji
    • 富山高等工業専門学校 専攻科機能材料工学専攻 Functional Materials Engineering Course of Advanced Engineering Faculty, Toyama National College of Technology
    • 佐貫 須美子 SANUKI Sumiko
    • 富山大学大学院理工学研究部 Department of Material Systems Engineering and Life Science, Faculty of Engineering, Toyama University
    • 岩井 正雄 IWAI Masao
    • 富山工業高等専門学校 Department of Ecomaterials Engineering, Toyama National College of Technology

抄録

The oxidation of phosphite in acidic solutions with dissolved oxygen under UV irradiation was investigated. The oxidation rate of phosphite obeys 1/2-order for phosphite and <I>p</I><SUB>O<SUB>2</SUB></SUB>, first-order for UV intensity. The pH of the solutions controls the concentration of the main reacting species, H<SUB>2</SUB>PO<SUB>3</SUB><SUP>-</SUP>. A activation energy was found to be 41.3kJ• mol<SUP>-1</SUP> , suggesting that the overall reaction rate was controlled by a chemical reaction.<BR>Furthermore, the applicability of the oxidation reaction of phosphite to the treatment of spent electroless plating solutions was studied using artificial electroless plating solutions. Oxidation above 80% was readily achieved within 120 minutes at 333K and 1 atm oxygen partial pressure. From the findings of this study, we can expect to use the oxidation reaction step of phosphite as part of the flowsheet of spent electroless plating liquor treatment.

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 124(9), 589-593, 2008-09-25 

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10021999147
  • 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
    9664972
  • 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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