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Kinetics of sorption of aliphatic acids by oleophilic anion exchange resins in toluene
Author(s) -
Walden John,
Miller Irving F.,
Gregor Harry P.
Publication year - 1978
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1978.070220222
Subject(s) - toluene , sorption , diffusion , hydroxide , chemistry , ion exchange , ion exchange resin , ion , kinetics , organic chemistry , adsorption , thermodynamics , quantum mechanics , physics
The rate of sorption of toluene by dry oleophilic anion exchange resins in the hydroxide state was measured both by direct weight measurements and also by the visual observation of the rate of movement of a refractive index gradient between unreacted and reacted zones. The rate of sorption of carboxylic acids from solution in toluene was also measured by beads swollen in toluene, both by direct chemical analysis of the solution and by the visual method. Diffusion coefficients of acids in the resins were calculated using three different theories for diffusion in gels coupled with chemical reactions, and reasonable agreement between theory and experiment was found.