ギ酸ニッケルの湿式熱分解によるニッケル触媒の製造

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タイトル別名
  • Preparation of Nickel Catalyst by Thermal Decomposition of Nickel Formate in Suspension.
  • ギサン ニッケル ノ シッシキ ネツ ブンカイ ニ ヨル ニッケル ショクバイ ノ セイゾウ

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説明

In the thermal decomposition of nickel Formate in a mixed solvent of diphenyl ether and diphenyl for manufacturing of nickel catalyst, the relation between the conditions for deconposition and the activity of catalyst has been investigated. The determination of its activity was made by measuring the velocity constant of hydrogenation of dinitrotoluene under pressure. Repeated use of solvent was not only simple for operation but also gave catalyst of high activity than using it after recovering it with distillation. Its higher activity partly depends on effect of phenol formed from hydrogenolysis of Biphenyl ether during the decomposition. The amount of solvent used for catalyst preparation had no relation with its activity above a certain amount. The greater the velocity of raising temperature at the time of decomposition, the higher was the activity of catalyst. As to the method of decomposition, heating of a suspension of nickel formate in the solvent gave stronger activity of catalyst rather than the addition of slurry of nickel formate in the heated solvent. Glass and zinc were found to be suitable for the material of the vessel for decomposition.

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