Solubility of solids in near-critical fluids IV. CHI3 and I2 in trifluoromethane

The solubilities of I2(s) and CHI3(s) in near-critical fluid CHF3 have been determined with the high-pressure spectrophotometric technique and with the sampling and analytical procedure described previously. Isothermal-solubility measurements were carried out under subcritical conditions in the dens...

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Autores principales: Marceca, Ernesto Jose, Fernandez Prini, Roberto
Publicado: 1994
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219614_v26_n6_p651_Marceca
http://hdl.handle.net/20.500.12110/paper_00219614_v26_n6_p651_Marceca
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_00219614_v26_n6_p651_Marceca2023-06-08T14:44:39Z Solubility of solids in near-critical fluids IV. CHI3 and I2 in trifluoromethane Marceca, Ernesto Jose Fernandez Prini, Roberto The solubilities of I2(s) and CHI3(s) in near-critical fluid CHF3 have been determined with the high-pressure spectrophotometric technique and with the sampling and analytical procedure described previously. Isothermal-solubility measurements were carried out under subcritical conditions in the dense liquid phase at the temperature T = (293.62 ± 0.02) K for both solutes and under supercritical conditions at T = (303.80 ± 0.02) K for CHI3 and at T = (308.26 ± 0.01) K for both solutes; isobaric runs were done for the two solutes at a pressure of (8.008 ± 0.002) MPa. As expected, solubilities showed a strong dependence on p and T close to the thermodynamic state where the compressibility or thermal expansivity of the solvent passes, respectively, through a maximum. It is observed that I2 is almost ten times more soluble than CHI3 in near-critical CHF3. The results obtained in all the studies of this series are compared in terms of enhancement factors which eliminate the influence of the vapour pressure of the solid solute upon the observed solubility. A discussion of the observed qualitative features and their relation to molecular interactions is attempted. © 1994 Academic Press Ltd. Fil:Marceca, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fernández-Prini, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1994 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219614_v26_n6_p651_Marceca http://hdl.handle.net/20.500.12110/paper_00219614_v26_n6_p651_Marceca
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The solubilities of I2(s) and CHI3(s) in near-critical fluid CHF3 have been determined with the high-pressure spectrophotometric technique and with the sampling and analytical procedure described previously. Isothermal-solubility measurements were carried out under subcritical conditions in the dense liquid phase at the temperature T = (293.62 ± 0.02) K for both solutes and under supercritical conditions at T = (303.80 ± 0.02) K for CHI3 and at T = (308.26 ± 0.01) K for both solutes; isobaric runs were done for the two solutes at a pressure of (8.008 ± 0.002) MPa. As expected, solubilities showed a strong dependence on p and T close to the thermodynamic state where the compressibility or thermal expansivity of the solvent passes, respectively, through a maximum. It is observed that I2 is almost ten times more soluble than CHI3 in near-critical CHF3. The results obtained in all the studies of this series are compared in terms of enhancement factors which eliminate the influence of the vapour pressure of the solid solute upon the observed solubility. A discussion of the observed qualitative features and their relation to molecular interactions is attempted. © 1994 Academic Press Ltd.
author Marceca, Ernesto Jose
Fernandez Prini, Roberto
spellingShingle Marceca, Ernesto Jose
Fernandez Prini, Roberto
Solubility of solids in near-critical fluids IV. CHI3 and I2 in trifluoromethane
author_facet Marceca, Ernesto Jose
Fernandez Prini, Roberto
author_sort Marceca, Ernesto Jose
title Solubility of solids in near-critical fluids IV. CHI3 and I2 in trifluoromethane
title_short Solubility of solids in near-critical fluids IV. CHI3 and I2 in trifluoromethane
title_full Solubility of solids in near-critical fluids IV. CHI3 and I2 in trifluoromethane
title_fullStr Solubility of solids in near-critical fluids IV. CHI3 and I2 in trifluoromethane
title_full_unstemmed Solubility of solids in near-critical fluids IV. CHI3 and I2 in trifluoromethane
title_sort solubility of solids in near-critical fluids iv. chi3 and i2 in trifluoromethane
publishDate 1994
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219614_v26_n6_p651_Marceca
http://hdl.handle.net/20.500.12110/paper_00219614_v26_n6_p651_Marceca
work_keys_str_mv AT marcecaernestojose solubilityofsolidsinnearcriticalfluidsivchi3andi2intrifluoromethane
AT fernandezpriniroberto solubilityofsolidsinnearcriticalfluidsivchi3andi2intrifluoromethane
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