Zn末の粒度および比表面積と反応活性について

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タイトル別名
  • On the Particle Size and the Surface Area and their Relation to the Reactivity of Zn Powder. (On the Reactivity of Zn Powder. 3rd Report)
  • Znマツ ノ リュウド オヨビ ヒ ヒョウメンセキ ト ハンノウ カッセイ ニ ツイテ

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抄録

This paper presents the results of studies on the reactivity of Zn powder in relation to particle shape and specific surface area. The specific surface area was determined by different methods and used to discuss the surface structure. The methods used are the “equivalent circle method”, the liquid phase adsorption method using crystal violet in methanol and B.E.T method using N2, CO2 and n-C4H10. The shape of D-Zn particles is nearly spherical or polyhedral, but that of E-Zn is dendritic with layer growth. The specific surface area of E-Zn is twice to three times as large as that of D-Zn. But this does not account for the high reactivity of E-Zn about ten times as large as that of D-Zn. E-Zn products, nearly equal in purity but prepared under different electrolysing conditions do not show the activity as expected from their surface area. These facts and the ineffectiveness of the trace impurities strongly suggest some unknown factors responsible for the very high reactivity of E-Zn (E-Zn: electrolytic Zn powder, D-Zn: distilled Zn powder).

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (7), 397-400, 1959

    公益社団法人 日本金属学会

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