Abstract

Reactions of FeF 3 with several oxides at elevated temperatures are described. Reaction products were usually Fe 2O 3 and the fluoride of the other element. With higher valency elements complete fluorine exchange did not always occur and oxyfluorides were formed. Intermediates in the reactions include oxyfluorides and mixed oxides, again only found with higher valency elements. Some shorter studies on the reaction of CrF 3 with oxides are included for comparisons, the reactions observed being generally similar.

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