Densities and Viscosities of Amino Acid + Xylitol + Water Solutions at 293.15 ≤ T/K ≤ 323.15
| Autor: | Xiaofen Ren, Youguang Ma, Chunying Zhu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Molar
Aqueous solution Chemistry General Chemical Engineering Analytical chemistry Partial molar property 02 engineering and technology General Chemistry 010402 general chemistry 01 natural sciences Apparent molar property 0104 chemical sciences Solvent Transition state theory Viscosity Molar volume 020401 chemical engineering Organic chemistry 0204 chemical engineering |
| Zdroj: | Journal of Chemical & Engineering Data. 62:477-490 |
| ISSN: | 1520-5134 0021-9568 |
| DOI: | 10.1021/acs.jced.6b00766 |
| Popis: | Densities (ρ) and viscosities (η) of aqueous xylitol solutions with glycine, l-alanine, l-valine, l-threonine, or l-arginine were measured at T = (293.15 to 323.15) K under atmospheric pressure. The density values were utilized to further calculate the apparent molar volume (Vφ), the limiting partial molar volumes of amino acids (Vφ0), the limiting partial molar volumes of transfer (ΔtrVφ0) and the interaction coefficients Vab, Vabb, Vabbb. The viscosity data were used to obtain viscosity B-coefficient, the free energies of activation per mole of solvent (Δμ10≠) and solute (Δμ20≠). The limiting partial molar volumes of transfer and the free energies of activation per mole of both solvent (Δμ10≠) and solute (Δμ20≠) were analyzed based on the cosphere overlap model and transition state theory, respectively. The hydration number of amino acid was determined using the obtained limiting partial molar volume and viscosity B-coefficient. |
| Databáze: | OpenAIRE |
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