Equilibrium solubility of vanillin in some (ethanol plus water) mixtures: determination, correlation, thermodynamics and preferential solvation
| dc.contributor.author | Akay, Sema | |
| dc.contributor.author | Kayan, Berkant | |
| dc.contributor.author | Jouyban, Abolghasem | |
| dc.contributor.author | Martinez, Fleming | |
| dc.contributor.author | Acree, William E., Jr. | |
| dc.date.accessioned | 2021-12-14T10:05:52Z | |
| dc.date.available | 2021-12-14T10:05:52Z | |
| dc.date.issued | 2021 | |
| dc.department | Sabire Yazıcı Fen Edebiyat Fakültesi | |
| dc.description.abstract | Equilibrium mole fraction solubility of vanillin in nine aqueous-ethanolic mixtures, as well as in neat water and neat ethanol, was determined at seven temperatures from T = 293.15 to T = 323.15 K. Vanillin solubility in these mixtures was adequately correlated with several well-known correlation models with the mean percentage deviations of 5.9 to 18.3%. Respective apparent thermodynamic functions, i.e. Gibbs energy, enthalpy, and entropy, for the dissolution, mixing and solvation processes, were computed using the van't Hoff and Gibbs equations. The enthalpy-entropy relationship for vanillin was non-linear in the plot of enthalpy vs. Gibbs energy of dissolution with positive slopes from neat water to the mixture of w(1) = 0.10 and the interval 0.50 < w(1) < 0.90 but negative in the interval 0.10 < w(1) < 0.50 and from w(1) = 0.90 to neat ethanol. Accordingly, in the first cases the vanillin transfer from more polar to less polar solvent systems is enthalpy-driven but entropy-driven for the last ones. Moreover, by means of the inverse Kirkwood-Buff integrals is observed that vanillin is preferentially solvated by water molecules in water-rich mixtures but preferentially solvated by ethanol molecules in mixtures of 0.23 < x(1) < 1.00. | |
| dc.identifier.doi | 10.1016/j.molliq.2021.117529 | |
| dc.identifier.endpage | - | en_US |
| dc.identifier.issn | 0167-7322 | |
| dc.identifier.issn | 1873-3166 | |
| dc.identifier.issue | - | en_US |
| dc.identifier.scopusquality | Q1 | |
| dc.identifier.startpage | - | en_US |
| dc.identifier.uri | https:/dx.doi.org/10.1016/j.molliq.2021.117529 | |
| dc.identifier.uri | https://hdl.handle.net/20.500.12451/8942 | |
| dc.identifier.volume | 342 | en_US |
| dc.identifier.wos | WOS:000700317100089 | |
| dc.identifier.wosquality | Q1 | |
| dc.indekslendigikaynak | Web of Science | |
| dc.indekslendigikaynak | Scopus | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.relation.ispartof | Journal of Molecular Liquids | |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | |
| dc.rights | info:eu-repo/semantics/embargoedAccess | |
| dc.subject | Vanillin | |
| dc.subject | (ethanol + water) Mixtures | |
| dc.subject | Solubility | |
| dc.subject | Solution Thermodynamics | |
| dc.subject | Jouyban-Acree Model | |
| dc.subject | Preferential Solvation | |
| dc.title | Equilibrium solubility of vanillin in some (ethanol plus water) mixtures: determination, correlation, thermodynamics and preferential solvation | |
| dc.type | Article |
