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Thermodynamic Characteristics of the Dissolution of Fullerene C60 in Benzene, Toluene, o-Xylene, o-Dichlorobenzene, and Carbon Disulfide at Different Temperatures

Авторы: Solovyev S.N., Krusheva M.A., Gurov A.A., Aiguzhin V. Опубликовано: 09.06.2020
Опубликовано в выпуске: #3(90)/2020  
DOI: 10.18698/1812-3368-2020-3-107-118

 
Раздел: Химия | Рубрика: Физическая химия  
Ключевые слова: enthalpy, dissolution Gibbs energy and enthropy, crystallosolvates, clusters, anomalous temperature dependence of solubility

The enthalpy of the fullerene C60 dissolution in carbon disulfide CS2 at 298.15 K was measured in a calorimeter with an isothermal shell. The value of the standard enthalpy of the fullerene C60 dissolution in this substance was found. Standard thermodynamic functions of fullerene C60 dissolution in benzene, chlorobenzene, bromobenzene, carbon disulfide, toluene, o-xylene, and o-dichlorobenzene at 298.15 K were determined based on the results of thermometric measurements and theoretical data. The standard thermodynamic functions have also been determined for toluene, o-xylene, and o-dichlorobenzene at temperatures of 288.15 and 308.15 K. The possible causes of the abnormal temperature dependence of the fullerene C60 solubility in some solvents, as well as sign changes in their dissolution enthalpies, in the temperature range of 288.15--308.15 K have been discussed

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