高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (4): 605.

• 论文 • 上一篇    下一篇

四元体系KCl-K2SO4-CO(NH2)2-H2O有25℃时的等温溶度研究

张逢星, 魏小兰, 周霞, 郭志箴   

  1. 西北大学化学系, 西安, 710069
  • 收稿日期:1996-04-08 出版日期:1997-05-24 发布日期:1997-05-24
  • 通讯作者: 张逢星, 男, 41岁, 硕士, 副教授.
  • 作者简介:张逢星, 男, 41岁, 硕士, 副教授.
  • 基金资助:

    陕西省教育委员会专项科研基金

Studies on the Isothemal Solubilities of the Quaternary System KCl-K2SO4-CO(NH2)2-H2O at 25℃

ZHANG Feng-Xing, WEI Xiao-Lan, ZHOU Xia, GUO Zhi-Zhen   

  1. Department of Chemistry, Northwest University, Xi'an, 710069
  • Received:1996-04-08 Online:1997-05-24 Published:1997-05-24

摘要: 测定了四元体系KCl-K2SO4-CO(NH2)2-H2O及边界三元体系K2SO-CO(NH2)2-H2O在25℃时的溶度及饱和溶液密度值和折光率,绘制了相应的溶度图及相应的组成-性质图.测定并绘制了该四元体系K2SO4单饱区的溶度面、折光率面和密度面图.两个体系的溶度图均属于低共饱型,平衡固相为组份化合物.

关键词: 溶度图, 相平衡, 硫酸钾, 氯化钾,

Abstract: The isothermal solubilities and the refraction indices, densities of the saturatedsolutions in the quaternary system KCl-K2SO4-CO(NH2)2-H2Owere investigated at 25℃ forthe first time.The isograms of the refraction indices, densities and water-content of the sat-urated solutions corresponding to K2SO4 have been obtained.The phase diagram of the qua-ternary system is simple cutectic type,in which there is a triple saturated point, KCl 14.06,K2SO4 0.51, CO(NH2)2 47.05, H2O38.88 (mass fraction×102).

Key words: Solubility diagram, Phase equilibrium, Potassium sulfate, Potassium chlioride, Urea

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