Method for producing elemental rhodium

Abstract

Method for producing elemental rhodium, comprising the steps of: (1) providing an aqueous suspension of diethylene triammonium hexahalogenorhodate adjusted with hydrohalic acid to a pH value of −1 to +2; (2) adding a sufficient quantity of reducing agent for complete conversion of the diethylene triammonium hexahalogenorhodate to the suspension provided in step (1) and allowing the reaction to proceed until the formation of elemental rhodium is completed; and (3) separating the elemental rhodium formed in step (2) from the hydrohalic aqueous composition formed in step (2); whereby halogen is bromine and/or chlorine.

Dependencies are inferred from the claim text.