Table 1: Amounts of ZrOCl2 · 8H2O and FeCl3 · 6H2O in solutions A and B.

Sample no.ZrOCl2 · 8H2O
“a” g/50 mL
in solution A
FeCl3 · 6H2O “b” g/50 mL
in solution B
ZrO2 : Fe2O3
(molar)

S11.622.721 : 1
S21.622.044 : 3
S31.621.362 : 1
S41.620.684 : 1