Sh. Han et al., STUDY ON ELECTRIC PROPERTY AT INTERFACE OF POSITIVE SOL OF MAGNESIUM ALUMINUM HYDROXIDE, Chinese journal of chemistry, 15(4), 1997, pp. 304-312
The isoelectric point (IEP) and zero point of charge (ZPC) of magnesiu
m aluminum hydroxide were studied by electrophoresis method, potentiom
etric titration method, and elemental analysis. Results showed that th
e charge of magnesium aluminum hydroxide was composed of variable char
ge and permanent positive charge. Because of the permanent positive ch
arge, the IEP and ZPC obtained were higher than calculated. The LEP de
creased and ZPC increased as X increased.