Thermochemical study of the solvation of alkanes in mixtures of methanol with butyl alcohol isomers

Citation
Nl. Potkina et al., Thermochemical study of the solvation of alkanes in mixtures of methanol with butyl alcohol isomers, RUSS CHEM B, 48(2), 1999, pp. 271-273
Citations number
12
Categorie Soggetti
Chemistry
Journal title
RUSSIAN CHEMICAL BULLETIN
ISSN journal
10665285 → ACNP
Volume
48
Issue
2
Year of publication
1999
Pages
271 - 273
Database
ISI
SICI code
1066-5285(199902)48:2<271:TSOTSO>2.0.ZU;2-Z
Abstract
A calorimetric method was applied at 25 degrees C to measure the enthalpies of dissolution of cyclohexane, heptane, and decane in the methanol-n-butan ol mixed solvent and hexadecane in mixtures of methanol,with n-, iso-, and tert-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 no nspecific intermolecular solvent-solvent interactions describes satisfactor ily the enthalpies of dissolution of alkanes in mixtures of methanol with n - and iso-butyl alcohols. It was suggested that there is no preferential so lvation of alkanes by one of the mixed solvent components in the MeOH-(BuOH )-O-n and MeOH-(BuOH)-O-i mixtures; in the MeOH-(BuOH)-O-t system, the comp osition of alkane solvation shell differs slightly from the solvent composi tion in the bulk.