四元体系Na_2B_4O_7-Na_2CO_3-NaHCO_3-NaBO_2-H_2O等温溶度研究(0℃和15℃)  

Study on the Isothermal Solubility o f Na_2B_4O_7-Na_2CO_3-NaHCO_3-NaBO_2-H_2O System at 0,15℃

作　　者：李君[1] 杨琴[1] 张逢星[1] 李恒欣[1] 

机构地区：[1]西北大学化学系陕西省物理无机化学重点实验室,西安710069

出　　处：《无机化学学报》2001年第6期849-852,共4页Chinese Journal of Inorganic Chemistry

摘　　要：本文首次测定了四元体系Na2B4O7Na2CO3NaHCO3NaBO2H2O在0℃和15℃时的等温溶度和饱和溶液的折光率绘制了相应的溶度图。在0～15℃时该四元体系为简单体系对应4个组分盐或其水合物有4个单饱和结晶区、5条双饱和结晶线和2个三饱和点。The solubilities and the refractive indices of saturated solutions in th e Na2B4O7-Na2CO3-NaHCO3-NaBO2-H2O system have been investigated for t he first time at 0℃and 15℃。There are 4crystallization fields correspond ing to component salts or its hydrate d,5double-saturated lines and 2invariant points corresponding to(Na2B4O7·10H2O +NaBO2·4H2O +Na2CO3·10H2O andNa2B4O7·10H2O +NaHCO3+Na2CO3·10H2O)at 0℃and 15℃。

关 键 词：溶度图 相平衡 四元体系 硼酸盐 硼酸钠 碳酸钠 等温溶度 

分 类 号：O642.542[理学—物理化学] O642.42[理学—化学]