Measurement and correlation of the solubility of crown ethers in selected organic solvents

Urszula Domańska-Żelazna

Abstract

The solid-liquid equilibrium (SLE), of 13 binary mixtures {18-crown-6(1) + selected organics solvents: benzene, 1-heptene, 1-heptyne, tert-butanol, ethyl mathyl ketone, methyl n-propyl ketone, isobutyl methyl ketone, 1-hexanal, epichlorohydrin, DMSO, 1,1,1-trichloroethane, tetrachloroethylene, 1-chlorobutane (2)} have been determined between 240-315 K. The data have been correlated with three G(E) equations: Wilson, NRTL and UNIQUAC. Moreover published earlier nineteen sets of SLE data for different crown ether: {12-crown-4 or 18-crown-6, or dibenzo-8-crown-6, or dibenzo-24-crown-8(1) + organic solvent (2)} published earlier have been examined, using the same correlation equations. The best cerrelation of the solubility data have been obtained by Wilson's equation, where the root-mean-square deviation of the solubility temperatures varied from 0.44 K to 1,87 K and were dependent on the solute calculated. In the calculations, the existence of solid-solid forst-order phase transition in 18-crown-6 and dibenzo-24-crown-8 have been taken into consideration.
Author Urszula Domańska-Żelazna ZChF
Urszula Domańska-Żelazna,,
- Department Of Physical Chemistry
Journal seriesPolish Journal of Chemistry, ISSN 0137-5083
Issue year1998
Vol72
Pages925-939
Keywords in Englishcrown ethers solid-liquid equilibrium data correlation
URL http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.baztech-article-BAR2-0002-0026
Internal identifier2155
Languageen angielski
Score (nominal)20
Citation count*7 (2013-01-30)
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