Influence of [H~+]/[AIOOH] mole ratio and temperature on peptization of pseudo-boehmite

The variation of Zeta potential, conductivity and sol size during peptization of pseudo-boehmite as well as influence of temperature on the peptization were investigated by Zetasizer Nano ZS potentialgranulometer and Turbisean infrared dispersion stability indicator. The results showed that stable pseudoboehmite sol was obtained under Zeta potential of above 30 mV; optimal range of [H~+]/[A1OOH] mole ratio was 0.15 to 0.25, with resulted sol size of about 70 nm; increasing peptization temperature favored proceeding of the peptization.