摘要
采用等温蒸发法研究了Na2CO3-Na2B4O7-H2O三元体系在273 K时的相平衡以及平衡液相的密度。利用溶解度数据绘制了该三元体系273K下的相图。研究发现,该体系属于简单共饱型,无复盐及固溶体形成,Na2CO3和Na2B4O7互有增溶作用。相图中单变量曲线所对应的平衡固相分别为Na2CO3.10H2O和Na2B4O7.10H2O。
The solubilities and densities of equihbrium solutions were studied in the ternary system Na2CO3 - NaEB4O7 - H2O at 273K by isothermal evaporation method. The results show that the ternary system is a type of simple common saturation. No double salt or solid solution was formed. Na2CO3 has salting - in effect on Na2B4O7. Based on the solubility data, the phase diagram of the ternary system was plotted, which consists of two univariant curves. The phase equilibrium solids were Na2CO3 · 10H2O and Na2B4O7 · 10H2O.
出处
《盐业与化工》
CAS
北大核心
2008年第6期24-26,共3页
Jounral of Salt and Chemical Industry
基金
国家自然科学基金(40673050)
关键词
水盐体系
相平衡
三元体系
water - salt system
phase equilibrium
ternary system
作者简介
周梅（1982-），女，硕士研究生，主要研究领域为相平衡与相分离技术。
