Solubility of caffeine in a binary solvent supercritical CO₂—methanol

2014, №3

сс. 28-35

V.A. Golubev, M.Yu. Nikiforov, G.A. Alper.

Key words: molecular association, solubility, supercritical fluid, mixed solvent

The association constant caffeine—methanol at 313 K is determined using ¹H NMR. The caffeine solubility in a mixed solvent «supercritical carbon dioxide (SC-CO₂) — methanol» is calculated taking into consideration the experimentally measured value of association constant in the framework of ASL model (Associated Solution + Lattice) based on the theory of molecular association and a simple lattice model. Individual contributions to the solubility are obtained and relative role of various factors determining the solubility of caffeine in the mixed solvent are analyzed. The presence of a maximum on the dependence of the solubility of caffeine versus the methanol content in the system «SC-CO₂ — methanol» is predicted.

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ГОСТ
7.0.100-2018

Голубев, В.А. Solubility of caffeine in a binary solvent supercritical CO<sub>2</sub>—methanol / В.А. Голубев, М.Ю. Никифоров, Г.А. Альпер. – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2014. – Т. 9. – № 3. – С. 28-35.

TRANSLIT

Golubev, V.A. Rastvorimost' kofeina v binarnom rastvoritele sverhkriticheskij CO2—metanol / V.A. Golubev, M.YU. Nikiforov, G.A. Al'per. – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2014. – Т. 9. – № 3. – S. 28-35.

V.A. Golubev, M.Yu. Nikiforov, G.A. Alper Solubility of caffeine in a binary solvent supercritical CO<sub>2</sub>—methanol. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 28-35 (2014). https://doi.org/

Solubility of caffeine in a binary solvent supercritical CO2—methanol

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Solubility of caffeine in a binary solvent supercritical CO₂—methanol