ガラスより水中へ溶出する種々のイオンの溶出量と溶出時間および溶出温度との関係式

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Dissolving equations of ions into water from glasses were studied in this paper.Many kinds of glasses in system of (1) SiO2-Na2O-TiO2, (2) SiO2-Na2O-V2O5, (3) B2O3-CaO-V2O5, (4) B2O3-BaO-TiO2 and (5) V2O5-P2O5-BaO were melted in electric furnace. The melted glasses were powdered into particles of 35-60 meshes and 2g of them were immersed in 50ml water of 30°, 50°, and 70°C, while being stirred during 10, 20, 40 and 80 minutes respectively. The amounts of Ti, V, P and Ba ions dissolved into the water were measured by chelatometric titration.The experimental data were tested by analysis of variance and the results were as follows.1) Log of dissolved amounts of V ion from SiO2-Na2O-V2O5 and B2O3-CaO-V2O5 system and log of P ion from V2O5-P2O5-BaO system and log of Ti ion from B2O3-BaO-TiO2 system at constant dissolving temperature were linear function of log of dissolving time.2) Log of dissolving amounts of V ion from SiO2-Na2O-V2O5 and B2O3-CaO-V2O5 system and log of Ti ion from B2O3-BaO-TiO2 system and log of P ion from V2O5-P2O5-BaO system at constant dissolving time were linear function of reciprocal of dissolving temperature and the slopes of their equations, that is, the apparent energy of dissolution were 0.5-3×5.103K.
社団法人日本セラミックス協会の論文
1972-12-01