@article{oai:toyama.repo.nii.ac.jp:00003951, author = {笹倉, 寿介 and 中本, 久慶 and 吉岡, 紘史 and 大井, 信一}, issue = {1/2}, journal = {富山大学工学部紀要}, month = {Mar}, note = {According to K. H. Lauer (U. S. Patent No. 2, 862, 793), it had been discovered that the concentrations and yields of NaOH from the reaction of sodium sulfate and calcium hydroxide could be very increased by conducting the reaction in the presence of a glycerine-water solvent. The present work was performed to know the detail of this reaction takes place under various conditions. The solubility of each of Ca(OH)_2, Na_2SO_4, and CaSO_4, in the solution mixing of glycerine was also determined to find the effect of the addition of glycerine to water and to expect the suitable conditions proceeding the reaction of sodium sulfate with Calcium hydroxide. The results obtained were as fallows: (1) It was found that glycerine increases the solubility product of Calcium hydroxide and decreases the solubility product of Calcium sulfate. (2) Most suitable condition for causticization was fund in the presence of 60% glyce-rine-water solvent and maximum concentration of NaOH obtained at 30℃ was 0.75 M. (3) No effect for causticization was given by temperature to variation., 硫酸ナトリウムのカセイ化反応については古くから研究されており,水溶液での反応については,H.J.Bittrich等による総説もある。 しかしながら水溶液においては希薄な水酸化ナトリウム溶液しか得られないので,グリセリンその他の比較的安価な多価アルコール混合水溶液において,カセイ化率を高める研究が行なわれているのは注目すべきである。 著者等はグリセリン―水混合溶媒中における硫酸ナトリウムの水酸化カルシウムによるカセイ化反応に関するK.H.Lauerの特許について,その詳細を知る目的をもって,本実験を遂行したので報告する。, Article, 富山大学工学部紀要,17(1/2)}, pages = {54--58}, title = {グリセリン : 水混合溶媒における硫酸ナトリウムのカセイ化}, volume = {17}, year = {1966} }