水素同位体交換反応を用いた陽イオン交換樹脂の酸性度測定

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タイトル別名
  • Measurement of the Acidities of Several Cation-Exchange Resins Using Hydrogen-Isotope Exchange Reaction.
  • スイソ ドウイタイ コウカン ハンノウ オ モチイタ ヨウイオン コウカン ジ

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抄録

The hydrogen-isotope exchange reaction between ethanol (unlabeled) and one of three cation-exchange resins labeled with tritium has been observed at 4080°C. The acidity (acidity based on kinetic logic) at each temperature has been obtained from a A "-McKay plot based on the respective data obtained. The following results have been obtained on the basis of both the acidities obtained in this work and the acidities (of several materials) obtained previously. (1) The order of the reactivity is (Amberlite IRC-76) >(Dowex A-1) >(PVA2000) > (Amberlite IRC-50) at 60°C. (2) The higher the temperature, the larger is the reactivity of each material. (3) The temperature dependence of the reactivity of Dowex A-1 is the largest in the four. (4) The reactivity of the functional group (i.e., COOH group or OH group) bonded to the polymer chain can be clarified using the A"-McKay plot method. (5) It seems that method can be applied to analyze other reactions, e.g., other isotope-exchange reactions, surface reactions, catalytic reactions, etc.

収録刊行物

  • 分析化学

    分析化学 43 (5), 409-413, 1994

    公益社団法人 日本分析化学会

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