Thermodynamic properties of (LiCl+N,N-dimethylacetamide) and (LiBr+N,N-dimethylacetamide) at temperatures from (323.15 K to 423.15) K

Nasirzadeh, Karamat and Neueder, Roland and Kunz, Werner (2005) Thermodynamic properties of (LiCl+N,N-dimethylacetamide) and (LiBr+N,N-dimethylacetamide) at temperatures from (323.15 K to 423.15) K. JOURNAL OF CHEMICAL THERMODYNAMICS, 37 (4). pp. 331-341. ISSN 0021-9614,

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Abstract

Precise vapor pressure data for LiCl and LiBr solutions in N,N-dimethylacetamide are given for T = (323.15 to 423.15) K. The molality ranges covered in this study are about m = (0.073 to 1.89) mol (.) kg(-1) for lithium chloride and in = (0.06 to 1.75) mol (.) kg(-1) for lithium bromide. Osmotic coefficients are calculated by taking into account the second virial coefficient of N,N-dimethylacetamide. The parameters of the extended Pitzer-ion interaction model of Archer, of the MSA-NRTL model and of the chemical model of Barthel are evaluated. These models accurately reproduce the experimental osmotic coefficients within different concentration ranges. The parameters of the Pitzer-ion interaction model of Archer are used to calculate the mean molal activity coefficients and excess Gibbs free energies. The non-ideal behaviors of these systems are discussed in terms of the model parameters. (c) 2004 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: CELLULOSE; SOLVENT; SYSTEM; MODEL; POLYSACCHARIDES; COEFFICIENTS; CHITIN; vapor pressure; osmotic coefficient; Pitzer's model; MSA-NRTL model; chemical model; N,N-dimethylacetamide; lithium chloride; lithium bromide
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: 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: 18 May 2021 06:05
Last Modified: 18 May 2021 06:05
URI: https://pred.uni-regensburg.de/id/eprint/36306

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