| Potentiometric titration of clay poly acidoids prepared by the action of dilute
acids on clay fractions isolatedfrom kaolin, aquagel, sedimentary rock, soil, vermiculites
and chlorite schist showed two inflections (except in acid montmorillonoid) due to reaction
of H+ and A/3+ and polymeric hydroxy AI and Fe with bases. Attempt has been
made to show how the titration behaviour, the dissociation constants (pK values) of
clay acidoids and the free energy changes in neutralisation reactions are dependent on
the chemical composition and charge on unit structural layers. |
