In Situ Spectroscopic Studied on Supercritical Water and Aqueous Solutions

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The structure of supercritical water and aqueous solutions has been examined up to 510°C and 40 MPa with in situ laser Raman spectroscopy. Just near the critical point, the maximal concentration of the symmetric OH stretching is obtained although the breakdown of the hydrogen-bonding network occurs. Consequently, short-lived tetrahedral configurations accompanied by large fluctuations of the structure are significantly formed and become possible along with dimers monomers. The spectra of an aqueous zinc nitrate solution reveal that the replacement of H<SUB>2</SUB>O molecules in the solvation shell of Zn<SUP>2+</SUP> by a nitrate ion is significantly promoted at higher temperatures above 300°C at 30 MPa. The average number of water molecules bound to the zinc ion is decreased to about 3 at 380°C from 6.

収録刊行物

  • 高圧力の科学と技術 = The Review of high pressure science and technology  

    高圧力の科学と技術 = The Review of high pressure science and technology 7, 1156-1158, 1998 

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002693189
  • NII書誌ID(NCID)
    AN10452913
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0917639X
  • NDL 記事登録ID
    4494176
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-1589
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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