Active fluoride catalysts that are useful in producing electrophilic
fluorination agents; especially useful in producing BDM from the reaction
of fluorine with carbon dioxide and FTM from the reaction of fluorine with
carbonyl fluoride. The fluoride catalyst comprises a mixture of two or
more fluorides selected from a transition metal fluoride, an alkali metal
fluoride and/or an alkaline earth metal fluoride. Alternately, the
fluoride catalyst is one or more fluorides, such as alkali metal
fluorides, alkaline earth metal fluorides, and/or transition metal
fluorides, deposited on an inert support.