摘要
采用等温溶解平衡法研究了三元体系K2 CO3 -Na2 CO3 -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 :该三元体系有复盐NaKCO3 ·6H2 O形成 ,根据溶解度数据绘制了相图 ,相图中有 2个共饱点E、F ,三条单变度曲线AE、BF、EF ;平衡固相分别为K2 CO3 ·3/ 2H2 O、Na2 CO3 ·10H2 O、NaKCO3 ·6H2 O。实验结果表明K2 CO3 对Na2 CO3 有强烈的盐析作用 ;并简要讨论了实验结果。
The solubilities and properties(density,electrical conductivity and pH)of solution were studied in the ternary system K 2CO 3-Na 2CO 3-H 2O at 288 K by isothermal equilibrium method.Based on the solubility data,the phase diagram of the system was plotted,which consists of two invariant point E and F;three univariant curves AE,BF,EF,three crystallization zone;K 2CO 3·3/2H 2O,Na 2CO 3·10H 2O,NaKCO 3·6H 2O.The K 2CO 3 have strong salt-out effect to Na 2CO 3 in the solution.The experimental results were discussed simplely.
出处
《无机盐工业》
CAS
2003年第1期23-24,55,共3页
Inorganic Chemicals Industry
基金
国家自然科学基金 (4 9773 2 0 0 )
