高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (10): 1101.

• 研究论文 • 上一篇    下一篇

甲酸-乙酸-水-氯化钙体系汽液平衡盐效应(Ⅱ)

李熙, 蒋富明, 王新星   

  1. 吉林大学化学系
  • 收稿日期:1988-12-15 出版日期:1990-10-24 发布日期:1990-10-24
  • 通讯作者: 李熙, 邮编: 130023
  • 基金资助:

    国家自然科学基金

Salt Effect of Vapour-Liquid Equilibrium in the Formic Acid-Acetic Acid-Water-Calcium Chloride System ( Ⅱ )

Li Xi, Jiang Fuming, Wang Xinxing   

  1. Department of Chemistry, Jilin University, Changchun
  • Received:1988-12-15 Online:1990-10-24 Published:1990-10-24

摘要: 研究了加入恒定浓度分别为0.8和1.0mol/(kg溶剂)的氯化钙的甲酸-乙酸-水体系的汽液平衡盐效应以及盐浓度对体系汽液平衡盐效应的影响。用汽液相等浓线及所划分的区域和等挥发度线分析判别了盐浓度对盐效应的影响以及由此引起的各区域挥发度的变化情况。结果表明,氯化钙对甲酸、乙酸的盐析效应随盐浓度增加而增强。

关键词: 甲酸-乙酸-水, 汽液平衡, 盐效应

Abstract: The vapour-liquid equilibrium (VLE) salt effect and the influence of salt concentration on the VLEsalt effect in the HAc-HCO2H-H2O-CaCl2 system were studied. The amounts of CaCl2 used were 0. 8 and 1. 0(mol/kg solvent) respectively. When the salt concentration is different,the changes of salt effect were expressed by the curves of volatility equal to 1 and several regions of different volatilities. The result obtained show that CaCl2 causes salting-out of the formic acid and acetic acid, and the salting-out increases with the increase of the salt concentration.

Key words: Formic acid-acetic acid-water, Vapour-liquid equilibrium (VLB), Salt effect

TrendMD: