The study of the Cd(NH3) 4 2+ /Cd*(NH3) 4 2+ exchange reaction in hydrous oxides of zirconium(IV), silicon(IV) and tin(IV)

Kinetics of the exchange reaction of cadmium(II)-ammine complex ion using radio-active isotope¹¹⁵Cd in the same chemical form in hydrous oxides of zirconium(IV), silicon(IV) and tin(IV) has been studied. It has been found that the major contribution in the overall exchange process is from the surface of the exchanger particles. It has also been found that the rate of exchange follows the order: hydrous ZrO₂>hydrous SnO₂>hydrous SiO₂