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Multicomponent diffusion and vapor‐liquid equilibria of dilute organic components in aqueous sugar solutions
Author(s) -
Chandrasekaran S. K.,
King C. Judson
Publication year - 1972
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690180309
Subject(s) - chemistry , ternary operation , aqueous solution , sugar , ethyl acetate , chromatography , diffusion , hexanal , fructose , analytical chemistry (journal) , organic chemistry , thermodynamics , physics , computer science , programming language
A technique for direct measurement of the differential diffusion coefficients in a ternary system of water, sugar, and a dilute organic species is described. The individual sugars were d‐fructose, d‐glucose, and sucrose; and ethyl alcohol, ethyl acetate, n ‐butyl acetate, and n ‐hexanal individually constituted the dilute organic species. The four ternary diffusivities were obtained over a range of sugar concentrations by the use of horizontal diaphragm cells, a differential interferometer, a flame‐ionization gas‐liquid chromatograph and postulation of the validity of the Onsager reciprocal relations. The equilibrium partial pressures of the dilute organic species over these solutions have also been measured, using a vapor head space chromatographic technique.