Abstract
The ion exchange properties and the chemical properties of titanium hexacyanoferrate (II) are described. Samples containing hexacyanoferrate (II) and titanium in the mole ratio 2:1 show very good exchange properties and exchange capacities of 1,4 to 1,5 m-equiv./1. The exchange of cesium ions is studied as a function of time. The concentration dependence of the exchange is investigated for cesium, strontium and lanthanum ions in the range of 10 −8 to 1 mole/1. The separation factors for different pairs of alkali elements and alkaline earth elements are measured for concentrations of the order of 10 −2 mole/1. The differences in the fixation of the alkali elements are very distinct in the order Cs > Rb > K > NH 4 > Na > Li and less distinct for the alkaline earth elements in the order Ba > Sr > Ca > Mg > Be.
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