Bibliographic Details
| Title: |
Solid-liquid equilibrium in the system 2-keto-L-gulonic acid + sodium-2-keto-L-gulonate + water. |
| Authors: |
Jirasek, Fabian1, Burger, Jakob2 burger@tum.de, Hasse, Hans1 |
| Source: |
Fluid Phase Equilibria. Oct2018, Vol. 473, p318-322. 5p. |
| Subjects: |
Solid-liquid equilibrium, Ternary system, Thermodynamics, Debye-Hückel theory, Ternary phase diagrams |
| Abstract: |
The solid-liquid equilibrium (SLE) in the ternary system 2-keto- l -gulonic acid (HKGA) + sodium-2-keto- l -gulonate (NaKGA) + water was studied experimentally at temperatures between 275 and 313 K and ambient pressure. At these conditions, HKGA and NaKGA precipitate as monohydrates: HKGA ⋅ H 2 O and NaKGA ⋅ H 2 O , respectively. Phase diagrams with one eutonic point are found for all temperatures. A thermodynamic model of the SLE that is based on an extended version of the Debye-Hückel theory was developed and the dissociation constant of HKGA as well as the solubility products of HKGA ⋅ H 2 O and NaKGA ⋅ H 2 O were determined. The agreement between the experimental data and the results from the model is excellent. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
