Kinetics of the rhodium desorption from the ion exchange resin with the thiourea functional groups by the thiourea solution

Abstract

The influence of the granules size, stirring intensity and temperature on the kinetics of the rhodium
desorption from the macroporous ion exchange resins Purolite S920 with the thiourea functional groups by
the thiourea solution has been investigated. It has been done conclusion, that the speed limiting stage of this
process was the chemical reaction of the formation of rhodium complexes with thiourea. The estimation of
values of effective activation energies of the process of the rhodium desorption and the chemical reaction of
formation of the rhodium complexes with thiourea in solutions (∼ 92 kJ/mol and ~ 95 kJ/mol accordingly)
has been given.