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Kinetic parameters of isotopic exchange reaction in finite bath
Author(s) -
Huang TingChia,
Tsai FuanNan
Publication year - 1977
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450550311
Subject(s) - dimensionless quantity , chemistry , diffusion , ion exchange , kinetic energy , volume fraction , tracer , fraction (chemistry) , ion exchange resin , analytical chemistry (journal) , thermodynamics , ion , inorganic chemistry , chromatography , physics , organic chemistry , quantum mechanics , nuclear physics
Abstract A mathematical model has been proposed for an isotopic exchange reaction between the solid particles and ions in a solution of finite volume. A theoretical equation has been derived to predict the exchange fraction as a function of the dimensionless time T with the kinetic parameters ξ, ξ 1 and final fractional uptake U as parameters for the exchange rate controlled by combined film diffusion, surface chemical reaction and intraparticle diffusion. The exchange fraction increases as the values of T, U, ξ and ξ, increase. Experimental results of the isotopic exchange systems CaCO 3 (s)Ca 2+ (aq), CaC 2 O 4 (s)/ Ca 2+ (aq) and Ca‐form Dowex 50W‐X8/Ca 2+ (aq) agree well with the theoretical equation proposed in this study.