An organic-inorganic composite, poly-o-toluidine Zr(IV) phosphate and nylon-6,6 Sn(IV) phosphate was chemically synthesized by mixing ortho-toluidine and nylon-6,6 into the gel of Zr(IV) phosphate and Sn(IV) phosphate in different mixing volume ratios. The particle diffusion mechanism is confirmed by the linear τ (dimensionless time parameter) vs. τ (time) plots. This study revealed the exchange process controlled by the diffusion within the exchanger particles. Some physical parameters like self-diffusion coefficient (D0), activation energy (Ea) and entropy of activation (ΔS°) have been evaluated under conditions favoring a particle diffusion-controlled mechanism.
Cation exchangers, Poly-o-toluidine Zr(IV)phosphate, Nylon-6,6 Sn(IV) Phosphate, Ion-exchange Kinetics