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

• Autorzy: Domańska U.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

crown ethers; solid-liquid equilibrium; data; correlation

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 1998
• Tom: Vol. 72, nr 5
• Strony: 925--939
• Opis fizyczny: Bibliogr. 36 poz., tab., wykr.

Twórcy

autor

Domańska U.

• Warsaw University of Technology Faculty of Chemistry 00-664 Warsaw Poland,