摘要
采用等温溶解平衡法研究了三元体系Na2 B4O7—K2 B4O7—H2 O 2 88K时的相平衡及平衡液相的主要物化性质 (密度、电导率 ,pH)。研究发现 ,该三元体系为简单共饱和型 ,无复盐及固溶体形成 ,根据溶解度数据绘制了相图 ,相图中单变量曲线所对应的平衡固相分别为 :K2 B4O7·4H2 O ,Na2 B4O7·10H2 O ;实验结果表明 :K2 B4O7对Na2 B4O7有增溶作用 。
In this paper, solubilities and properties (density, electrical condustivity and pH) of solution were studied in the ternary system Na 2B 4O 7-K 2B 4O 7-H 2O at 288K by isothermal equilibrium method. Based on the solubility data, the phase diagram of the system was plotted, which consists of two univariant curves, one invariant point. Phase equilibrium solids were Na 2B 4O 7·10H 2O and K 2B 4O 7·4H 2O. K 2B 4O 7 has salt in effect to Na aB 4O 7, the result of properties in the solution were discussed simplely.
出处
《海湖盐与化工》
2002年第1期16-18,共3页
Sea-Lake Salt and Chemical Industry
基金
国家自然科学基金 (4 9773 2 0 0 )资助课题
