カルシウムシアナミドよりシアン化物の合成

概要

論文の詳細を見る
Cyanides are produced from cyanamides by fusion of mixtures of cyanamide, carboneous materials and flux in a furnace and chilling the melt.　The reaction is given as　CaCN_2 + C + 2NaC1 ⇔ CaC1_2 + 2NaCN　CaCN_2 + C ⇔ Ca(CN)_2　About this reaction many studies were performed using commercial lime nitrogen in numerous countries, but the mechanism of the reaction had not been explained clearly. Then we entered into this study using pure calcium cyanamide.　In the present paper pure calcium cyanamide has been prepared and the formation of cyanide was studied.　The some results obtained are as follows.　(1) Pure calcium cyanamide was prepared from dicyandiamide by heating of mixtures of dicyandiamide and calcium carbonate.　(2) The formation of cyanide was favored by high temperature. It was found that calcium cyanide was changed into sodium cyanide under this condition.　(3) The free carbon in commercial lime nitrogen was very active in the formation of cyanide, or at the wet oxidation process.　(4) The free carbon in commercial lime nitrogen was presumed as graphite from the activation energy in the wet oxidation process.
山形大学の論文
1964-01-30