摘要
利用湿渣法研究了H3BO3-NaNO3-H2O体系在25℃时的相平衡关系,并检测了平衡液相的密度、折光率、电导率和pH等主要物化性质。结果表明,该三元体系属于简单三元水盐体系,共饱和溶液中H3BO3和NaNO3质量分数分别为2.75%和32.4%,并且在该温度下无复盐和水合物生成。用经验公式对平衡液相的密度、折光率进行了计算,计算值与实验值基本吻合。
Phase equilibrium relations of H3BO3-NaNO3-H20 ternary system at 25 ~C were studied by wet-residue method. Meanwhile, main physico-ehemical properties, such as density, refractive index, conductivity, and pH of the equilibrious liq- uid were detected.Results showed that the ternary system belonged to a simple water-salt ternary system.Mass fractions of H3BO3 and NAN03 in the total saturated solution were 2.75% and 32.4% respectively, and there was no formation of complex salt and hydrate.Density and refractive index of the equilibrious liquid were calculated by empirical equations.Calculated values were in agreement with the experiment values on the whole.
出处
《无机盐工业》
CAS
北大核心
2012年第6期31-33,共3页
Inorganic Chemicals Industry
关键词
硝酸钠
硼酸
三元体系
相平衡
sodium nitrate
boric acid
ternary system
phase equilibrium
