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書誌事項

タイトル別名
  • A Study on the Gas Occluded in Zn Powder. (On the Reactivity of Zn Powder, 10th Report)
  • アエンマツ ノ キュウゾウ キタイ ニ ツイテ

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抄録

The occluded gas in Zn powder was studied by heating in vacuo and analysing the gas evolved by using a mass spectrometer. The results indicated that the electrolytic Zn powder evolved hydrogen in a quantity correlated to the particle size and shape of the powder and also to the degree of the crystal imperfections, which is shown by the X-ray diffraction broadening in {103}. It was also established that the H2 evolved was not formed from H2O but from the H2 occluded in Zn. In the case of Zn powders exposed to laboratory air, the gas evolved by heating in vacuo was composed of H2, CO2, CO and H2O. Of these CO proved to be a by-product from CO2 which reacted with heated Zn as H2 was formed from H2O. It was also established that ZnO alone could absorb CO2 and H2O and set free them as such. Thus it may be concluded that the surface of Zn particles, when oxidized, becomes coated with a basic Zn carbonate layer by absorbing CO2 and H2O.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (10), 592-596, 1959

    公益社団法人 日本金属学会

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