无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2012, Vol. 44 ›› Issue (6): 31-.

• 论文 • 上一篇    下一篇

25 ℃ NaNO3-H3BO3-H2O三元体系相平衡研究

李入林,叶红勇   

  1. 南阳理工学院生物与化学工程学院,河南南阳 473004
  • 发布日期:2012-06-20

Phase equilibrium of NaNO3-H3BO3-H2O ternary system at 25 ℃

 LI  Ru-Lin, YE  Hong-Yong   

  1. School of Biological and Chemical Engineering,Nanyang Institute of Technology,Nanyang 473004,China
  • Published:2012-06-20

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。

关键词: 硝酸钠, 硼酸, 三元体系, 相平衡

Abstract: Phase equilibrium relations of H3BO3-NaNO3-H2O ternary system at 25 ℃ were studied by wet-residue method. Meanwhile,main physico-chemical properties,such as density,refractive index,conductivity,and pH of the equilibrious liquid were detected.Results showed that the ternary system belonged to a simple water-salt ternary system.Mass fractions of H3BO3 and NaNO3 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.

Key words: sodium nitrate, boric acid, ternary system, phase equilibrium

中图分类号: