水溶液の水素還元による金属の採取

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書誌事項

タイトル別名
  • Metal Precipitation from Solution by Hydrogen Reduction
  • スイヨウエキ ノ スイソ カンゲン ニ ヨル キンゾク ノ サイシュ
  • アンモニヤ性硫酸コバルト溶液よりのコバルトの還元速度
  • Rate of reduction of cobalt by hydrogen from ammoniacal cobalt sulfate solution

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抄録

The rate of reduction of ammoniacal cobalt sulfate solutions to metallic cobalt by hydrogen was studied over a hydrogen partial pressure range of 10 to 70kg/cm2and a temperature range of 150 to 225°C. Metallic cobalt was found to act as a catalyst, and linear rates of reduction were observed under the conditions where enough amount of cobalt powder was used. It was also revealed that the effects of ammonia and sulfate ion on the rate of reduction could be explained from the changes of hydrogen solubility. The rate of reduction is given by-d (Co)/dt=KSαPH2 exp (-7, 540/RT) where S is the effective surface area of cobalt powder, a the hydrogen solubility coefficient, and PH2 the partial pressure of hydrogen. A pcssible mechanism of the reduction process is suggested.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 75 (853), 469-473, 1959

    一般社団法人 資源・素材学会

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