Grundl, G. and Tsurko, E. N. and Neueder, R. and Kunz, W. (2019) Osmotic coefficients and activity coefficients in binary water/5-(hydroxymethyl)furfural and in ternary water/5-(hydroxymethyl)furfural/salt solutions at 298.15 K. JOURNAL OF CHEMICAL THERMODYNAMICS, 139: UNSP 10587. ISSN 0021-9614, 1096-3626
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This contribution is about the investigation of osmotic coefficients and the water activity of binary water/5-(hydroxymethyl)furfural (5-(hydroxymethyl)furan-2-carbaldehyde, HMF) and ternary water/5-(hydroxymethyl)furfural/salt (salt = NaCl or LiCl) solutions. Osmotic coefficients were determined by vapour pressure osmometry at 298.15 K and 975 hPa. HMF molalities ranged from (0.5 to 5) mol.kg(-1) in the binary solutions, while for the ternary solutions HMF molalities ranged from (1 to 5) mol.kg(-1)with salt molalities equal to (1 or 3) mol.kg(-1). The osmotic coefficients of the binary solutions were approximated with a Pitzer-type function to calculate activity coefficients of HMF in water. Osmotic coefficients of ternary systems were approximated according to the Zdanovskii-Stokes-Robinson (ZSR) semi-ideal mixing rule. Two-parameter fitting (third order terms in the power series) was applied to calculate solute activity coefficients in the ternary solutions. (C) 2019 Elsevier Ltd.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LIQUID-VAPOR-EQUILIBRIUM; SODIUM CHLORIDE-WATER; AQUEOUS-SOLUTIONS; BIOMASS; ACID; THERMODYNAMICS; DEHYDRATION; HISTIDINE; MIXTURES; MANNITOL; Vapour pressure osmometry; Osmotic coefficients; Water activity; Activity coefficients; 5-(Hydroxymethyl)furfural; Salt |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > Prof. Dr. Werner Kunz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Mar 2020 07:37 |
| Last Modified: | 24 Mar 2020 07:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/25788 |
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