Determination of infinite dilution activity coefficients for organic-aqueous systems using a dilute vapor-liquid equilibrium method

被引：18

作者：

Bader, MSH

Gasem, KAM

机构：

[1] School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078

来源：

CHEMICAL ENGINEERING COMMUNICATIONS | 1996年 / 140卷

关键词：

vapor-liquid equilibrium; infinite dilution activity coefficient; organic-aqueous systems;

D O I：

10.1080/00986449608936454

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A low pressure vapor-liquid equilibrium apparatus has been developed, tested and verified for the measurements of dilute solution activity coefficients for different organic solutes in aqueous systems. Activity coefficient data were measured for aqueous binary mixtures involving methanol, acetone, and benzene at 25 degrees C. The experimental measurements targeted the range of solute liquid compositions extending from the Gas Chromatograph detection limit to 0.3 mole fraction for methanol and acetone, and to the miscibility mole fraction for benzene. Precise extrapolation to determine the infinite dilution activity coefficients (gamma(i)(infinity)) was achieved. Instrumental, external and internal consistency tests performed on the acquired data indicate a good level of experimental consistency.

引用

页码：41 / 72

页数：32

共 31 条

[1]

BADER MSH, 1995, UNPUB J ENV SCI JAN

[2]

BADER MSH, 1993, THEISS OKLAHOMA STAT

[3] The determination of vapour and liquid compositions in binary systems II Acetone-water at 25(o)c [J].