Dissolution of some normal alkanes in ethylbenzene: Deduction of the enthalpy of mixing two n-alkanes in the solid state

被引：18

作者：

Ghogomu, PM ^{[1
]}

Schuffenecker, L ^{[1
]}

Dellacherie, J ^{[1
]}

Dirand, M ^{[1
]}

Balesdent, D ^{[1
]}

机构：

[1] ECOLE NATL SUPER IND CHIM,INST NATL POLYTECH LORRAINE,LAB THERMODYNAM SEPARAT,F-54001 NANCY,FRANCE

来源：

THERMOCHIMICA ACTA | 1997年 / 294卷 / 02期

关键词：

binary mixtures; drop calorimetry; enthalpy of formation; even-odd alternation effect; excess functions; experimental; n-alkanes;

D O I：

10.1016/S0040-6031(97)00072-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Drop calorimetry has been used to measure the heat changes occurring upon the dissolution of some single n-alkanes (octadecane to tetracosane) or their binary mixtures (C22H46-C24H50 and C23H48-C24H50), in ethylbenzene, at 311.45 K. The enthalpy changes measured show the even-odd alternation effect known for n-alkanes. The binary mixtures show pronounced non-ideality. Their enthalpies of formation at 293.15 K were deduced from the measurement of their heats of dissolution in ethylbenzene and found to depend on the crystal type. It is shown that these mixtures may consist of several phases of solid solutions. (C) 1997 Elsevier Science B.V.

引用

页码：147 / 155

页数：9

共 21 条

[1] BINARY-SYSTEMS OF EVEN-NUMBERED N-ALKANES (C2P H4P+2-C2P+2 H4P+6, 10-LESS-THAN-OR-EQUAL-TO-P-LESS-THAN-OR-EQUAL-TO-12) [J].