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Solubilities and diffusivities of N 2 O and CO 2 in aqueous sulfolane solutions
Author(s) -
Wang YiWei,
Otto Frederick D.,
Mather Alan E.,
Xu Shuo
Publication year - 1991
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280510206
Subject(s) - sulfolane , aqueous solution , thermodynamics , solubility , solvent , chemistry , work (physics) , volume (thermodynamics) , viscosity , organic chemistry , physics
The solubilities of N 2 O and CO 2 in aqueous sulfolane solutions and pure sulfolane solvent, and the diffusivities of N 2 O in aqueous sulfolane solutions were measured and correlated over the temperature range from 20° to 85°C; also, the data for density and viscosity that were needed in this experimental work were measured. This experiment revealed that the parameter of N 2 O analogy method depends not only on the temperature, but also on the character of the solvent. Therefore, different solvents possess different analogy parameters. Only for dilute aqueous solutions can the parameter be replaced by the analogy parameter of water. The results also proved that the sum of volume fractions contribution is a simple method to estimate the solubility in aqueous sulfolane solutions over the whole range of the concentrations and experimental temperatures, with an average deviation of less than 4·0%.