物理化学学报 >> 1992, Vol. 8 >> Issue (06): 829-833.doi: 10.3866/PKU.WHXB19920622

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CO(NH2)2-H3BO3-H2O体系相平衡研究

郭志琴; 江成发; 苏裕光   

  1. 成都科学技术大学化学工程系,成都 610065
  • 收稿日期:1991-09-16 修回日期:1992-05-11 发布日期:1992-12-15
  • 通讯作者: 郭志琴

Study of Phase Equilibrium on CO(NH2)2-H3BO3-H2O System At 25 ℃ and 35 ℃

Guo Zhi-Qin; Jiang Cheng-Fa; Su Yu-Guang   

  1. Department of Chemical Engineering, Chengdu University of Science and Technology, Chengdu 610065
  • Received:1991-09-16 Revised:1992-05-11 Published:1992-12-15
  • Contact: Guo Zhi-Qin

关键词: 尿素, 硼酸, 相平衡

Abstract: The phase equilibrium data of CO(NH_2)_2-H_3BO_3-H_2O system at 25 ℃ and 35 ℃ have been presented and the phase diagrams have been drawn too. According to the diagrams, no complex salts of CO(NH_2)_2 and H_3BO_3 have formed in CO(NH_2)_2-H_3BO_3-H_2O system at 25 ℃ and 35 ℃.
By using the equation of Margules, the phase equilibrium data of CO(NH_2)_2-H_3BO_3-H_2O system at 25 ℃ and 35 ℃ have been calculated. The calculations coincide well with the experimental data.

Key words: Urea, Boric acid, Phase equilibrium