Thermochemical study of the solvation of alkanes in mixtures of methanol with butyl alcohol isomers |
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| Authors: | N L Potkina N A Litova V P Korolev |
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| Institution: | (1) Ivanovo State Academy of Chemistry and Technology, 7 ul. Fr. Engelsa, 153460 Ivanovo, Russian Federation;(2) Institute of Solution Chemistry, Russian Academy of Sciences, 1 ul. Akademicheskaya, 153045 Ivanovo, Russian Federation |
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| Abstract: | A calorimetric method was applied at 25 °C to measure the enthalpies of dissolution of cyclohexane, heptane, and decane in
the methanol-n-butanol mixed solvent and hexadecane in mixtures of methanol withn-, iso-, andtert-butyl alcohols. The standard enthalpies of dissolution of alkanes were determined. It was shown that the equation proposed
in the literature for calculation of the enthalpies of dissolution of alkanes in mixtures with nonspecific intermolecular
solvent-solvent interactions describes satisfactorily the enthalpies of dissolution of alkanes in mixtures of methanol withn- andiso-butyl alcohols. It was suggested that there is no preferential solvation of alkanes by one of the mixed solvent components
in the MeOH−BunOH and MeOH−BuiOH mixtures; in the MeOH−ButOH system, the composition of alkane solvation shell differs slightly from the solvent composition in the bulk.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 271–274, February, 1999. |
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| Keywords: | enthalpy of dissolution enthalpy of transfer excess enthalpy of mixing alkanes methanol butyl alcohol isomers mixed solvent |
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