Excess properties of N,N,N',N'-tetramethylalkanediamine plus n-heptane: A study of the N-N proximity effect

被引：12

作者：

Dahmani, A ^{[1
]}

Kaci, AA ^{[1
]}

Jose, J ^{[1
]}

机构：

[1] UNIV LYON 1,LAB CHIM ANALYT 1,F-69622 VILLEURBANNE,FRANCE

来源：

THERMOCHIMICA ACTA | 1997年 / 292卷 / 1-2期

关键词：

diamines; enthalpy; excess functions; vapour-liquid equilibria;

D O I：

10.1016/S0040-6031(96)03128-0

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The vapour pressure of liquid n-heptane + N,N,N',N'-tetramethylalkanediamine, (CH3)(2) N-(CH2)(u-)N(CH3)(2) (u = 1,2), mixtures were measured by a static method in the 303.15-343.15 K range at 10 K intervals. The excess molar enthalpies were also measured at 303.15 K. The molar excess Gibbs energies, calculated from the vapour-liquid equilibrium data and the molar excess enthalpies compare satisfactorily with group contribution (DISQUAC) predictions. The proximity effect of N-atoms produces a regular decrease of the interaction parameters. (C) 1997 Elsevier Science B.V.

引用

页码：39 / 44

页数：6

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