Abstract

Cation exchange reactions involving sodium, potassium and cesium with a natural stilbite were investigated. Equilibrium constants of 7.03, 0.131 and 1.03 were derived from 23 degrees C isotherms for sodium on the zeolite replaced by cesium, potassium on the zeolite replaced by sodium, and potassium on the zeolite replaced by cesium, respectively. The equilibrium constant for sodium on the zeolite replaced by cesium falls to 1.65 at 85 degrees C.

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