Phase equilibrium of water plus formic acid plus acetic acid plus solvent (amyl acetate or diisobutyl ketone or diisopropyl ether) quaternary liquid systems

被引：8

作者：

Cehreli, Sueheyla ^{[1
]}

Baslioglu, Burcu ^{[2
]}

机构：

[1] Istanbul Univ, Fac Engn, Dept Chem Engn, TR-34320 Istanbul, Turkey

[2] Kologlu Kimya San Ins Tic Ltd Sti, TR-34560 Istanbul, Turkey

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2008年 / 53卷 / 07期

关键词：

D O I：

10.1021/je800143b

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Liquid-liquid equilibrium data of water + formic acid + acetic acid + solvent (amyl acetate, diisobutyl ketone, and diisopropyl ether) quaternary systems were measured at 298.15 K and atmospheric pressure. Complete phase diagrams were obtained by determining solubility curves and tie-lines. A comparison of the extracting capabilities of the solvents was made with respect to distribution coefficients, separation factors, and solvent-free selectivity bases. Reliability of the data was ascertained from Othmer-Tobias plots. The tie-lines were also predicted using the UNIFAC model. It is concluded that the used solvents can be treated as suitable separating agents for dilute aqueous formic and acetic acid mixtures.

引用

页码：1607 / 1611

页数：5

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