Zirconia sol was prepared from zirconium oxychloride solutions by forced
hydrolysis at 102?C. The prepared sol consisted of almost spherical,
monoclinic, hydrated zirconia particles 61 nm in diameter. The stability of
zirconia sol in the presence of various inorganic electrolytes (LiCl, NaCl,
KCl, CsCl, KBr, KI, KNO3, and K2SO4) was studied by potentiometric titration
method. Dependence of the critical concentration of coagulation (CCC) on the
dispersion pH was determined for all studied electrolytes. The critical
coagulation concentration values, for all investigated electrolytes, are
lower at higher pH. These values for all 1:1 electrolytes are equal in the
range of experimental error. For a given pH value, CCCs of K2SO4 are 3-4
orders of magnitude lower than the corresponding values for 1:1 electrolytes.
Stability of zirconia sol in the presence of various inorganic electrolytes
