Effect of temperature on the process of preferential solvation of 1,4-dioxane and 12-crown-4 ethers in the mixture of water with formamide

被引：1

作者：

Jozwiak, Malgorzata ^{[1
]}

Kosiorowska, Monika A. ^{[1
]}

机构：

[1] Univ Lodz, Dept Phys Chem, PL-90236 Lodz, Poland

来源：

THERMOCHIMICA ACTA | 2012年 / 539卷

关键词：

1,4-Dioxane; 12-Crown-4; ether; Enthalpy of solution; Preferential salvation; CROWN-ETHERS; HYDROPHOBIC HYDRATION; ORGANIC-SOLVENTS; THERMOCHEMICAL BEHAVIOR; DIMETHYL-SULFOXIDE; AQUEOUS FORMAMIDE; 298.15; K; ENTHALPIES; N; N-DIMETHYLFORMAMIDE; METHANOL;

D O I：

10.1016/j.tca.2012.04.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The dissolution enthalpy of 1,4-dioxane and 12-crown-4 ethers in the mixture of water (W) and formamide (F) was measured at four temperatures: 293.15 K, 298.15 K, 303.15 K, 308.15 K. The standard molar enthalpy of solution, Delta H-sol degrees, depends on the size of cyclic ethers and on temperature. The values of Delta H-sol degrees become more negative with increasing molecule size and they increase in magnitude with increasing temperature. The effect of temperature on the process of preferential solvation of cyclic ethers has been discussed. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：62 / 66

页数：5

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