Ion exchange of alkaline earth and transition metal ions on fibrous acrylonitrile based cerium (IV) phosphate—a kinetic study

A kinetic study of the exchange of Mg(II), Ca(II), Sr(II), Ba(II), Mn(II), Co(II), Cu(II) and Zn(II) metal ions for H(I) ions on acrylonitrile based cerium (IV) phosphate, a fibrous inorganic ion exchanger, has been made. Various useful kinetic parameters such as self-diffusion coefficient (D0), energy of activation (Ea) and entropy of activation (ΔS*) have been evaluated and a correlation has been made of these parameters with the ion exchange characteristics of the material.