電解Zn末の反応活性について

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書誌事項

タイトル別名
  • On the Reactivity of the Caustic Electrolytic Zn Powder (E-Zn). (On the Reactivity of Zn Powder. (1))
  • デンカイ Znマツ ノ ハンノウ カッセイ ニ ツイテ

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抄録

Zn powder is usually produced by the distillation method, but sometimes also by electrolysing a zincate solution. A systematic and comparative study of E-Zn and the distilled Zn powder (D-Zn) from the physical and chemical standpoints has been undertaken. The general conclusion is that the high reactivity of E-Zn powder does not depend upon the impurities as is usually believed, but essentially upon some physical properties, such as the specific surface area, the layer growth in dendrites and the crystal imperfection. This 1st report concerns with the comparative study in reactivity of E-Zn and D-Zn, which are almost identical in the kinds and the amounts of chemical impurities. The rate of dissolution in acids and in NaOH aq, the rate of reduction by NaHSO3 and chrysoidin in solution were measured. In all these reactions, E-Zn was found much more reactive than D-Zn, especially in those accompanied by H2 evolution. In the following studies, therefore, we will take, as the measure of reactivity of Zn powder, the rate of H2 evolution in HCl, which is convenient to determin.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (6), 355-359, 1959

    公益社団法人 日本金属学会

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