高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (11): 1150.

• 论文 • 上一篇    下一篇

甲酸-乙酸-水-醋酸钠体系汽液平衡的盐效应

李熙, 蒋富明, 康鸿业, 罗儒仪, 徐琴堂, 范曙光   

  1. 吉林大学化学系
  • 收稿日期:1987-06-24 出版日期:1988-11-24 发布日期:1988-11-24
  • 通讯作者: 李熙

Salt Effect of Vapor-Liquid Phase Equilibrium in the System Formic Acid-Acetic Acid-Water-Sodium Acetate

Li Xi, Jiang Fuming, Kang Hongye, Luo Ruyi, Xu Qintang, Fan Shuguang   

  1. Department of Chemistry, Jilin University, Changchun
  • Received:1987-06-24 Online:1988-11-24 Published:1988-11-24

摘要: 采用Otsuki-Williams式汽液平衡釜测定了甲酸-乙酸-水-醋酸钠体系在9.866×104Pa下汽液平衡数据。醋酸钠的加入量为2mol/(kg溶剂)。结果表明:醋酸钠对体系起物理化学作用,也起化学作用。它涉及到了两种盐对各组分的盐溶、盐析和盐效应的不规则现象。根据实验数据,绘制了汽液平衡相图、各组分挥发度等于1的曲线和甲酸-乙酸在体系中相对挥发度等于1的曲线,用以判别、分析盐效应的作用。

关键词: 汽液平衡, 盐效应, 甲酸-乙酸-水

Abstract: Vapor-liquid equilibrium data (VLE) were measured by Otsuki-Wil-liams still for the formic acid-acetic acid-water-sodium acetate at 9.866×104Pa.2 mol/(kgsolv) of NaAc was used. The results show that the favorable effect ofNaAc is not only chemical action but also physicochemical action. It related totwo salts to the phenomena of salting-out, salting-in and anomalous behavior incomponents. Acording to VLBdata, we have drawn up the VLBcurve, the curveof the volatilities equal to 1 and the curve of the ralative volatilities equal tofor distinguishing and analysing the influence of salt effect.

Key words: Vapor-liguid equilibrium, Salt effect, Formic acid-acetic acid-water

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