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Studies on ion exchange—IV: Kinetic theory of ion exchange

✍ Scribed by K. Klamer; C. van Heerden; D.W. van Krevelen

Publisher
Elsevier Science
Year
1958
Tongue
English
Weight
741 KB
Volume
9
Category
Article
ISSN
0009-2509

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✦ Synopsis

A suggestion that it might be possible to describe equilibria between ion exchangers and electrolyte solutions in analogy with membrane equilibria (Part II) has been followed up to determine the influence of some variables on the kinetics of ion exchange. It is proved that at low concentrations of the solution the mass transfer through a liquid film around the grain is ratedetermining for the process, whereas at high concentrations the rate-determining step is the diffusion within the grain (BOYD et al.). It is predicted that during a given process the relative influences of these two diffusion mechanisms need not always be constant.

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