New solid state exchange reactions of lithium ferrites with ZnSO4
Abstract
Heating of a pelletized mixture of LiFe
5
O
8
and ZnSO
4
in air at 650-700 °C results in a solid state exchange (metathesis) reaction with formation of ZnFe
2
O
4
. The rate of reaction is greater if orthoferrite LiFeO
2
is used instead of ferrospinel LiFe
5
O
8
. Owing to ready formation of ZnSO
4
during thermal dehydration, anhydrous ZnSO
4
can be substituted for ZnSO
4
·7H
2
O without substantial effect on the reaction rate.
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