▎ 摘　　要

NOVELTY - Method for electrochemically recycling a noble metal catalyst involves (a) applying a positive first potential to a working electrode comprising a redox metallopolymer, and forming an oxidized metallopolymer electrode, (b) contacting a product mixture comprising a reaction product and a noble metal catalyst and oxidized metallopolymer electrode, (c) selectively adsorbing the catalyst to the oxidized metallopolymer electrode, (d) collecting the reaction product when the catalyst is adsorbed to the oxidized metallopolymer electrode, (e) contacting an electrolyte and the loaded electrode, (f) applying a second potential to the loaded electrode and transforming oxidized metal species to a reduced state, (g) desorbing the adsorbed noble metal catalyst from the loaded electrode into the electrolyte, and (h) contacting the desorbed noble metal catalyst and an organic substrate to form the product mixture. USE - The method is useful for electrochemically recycling noble metal catalyst. The noble metal catalyst is chloroplatinic acid, chloroplatinic acid-isopropanol complex (Speier's catalyst), platinum(O)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (Karstedt's catalyst), palladium chloride, sodium tetrachloropalladate, palladium(II)bis(triphenylphosphine)dichloride, hexachloroiridic acid, trisodium hexachlororhodate, sodium pentachloronitrosylruthenate (II) (all claimed). ADVANTAGE - The method enables efficient and economical electrochemical recycling of noble metal catalyst. DETAILED DESCRIPTION - Method for electrochemically recycling a noble metal catalyst involves (a) applying a positive first potential to a working electrode comprising a redox metallopolymer, transforming metal moieties of the redox metallopolymer to an oxidized metal species and forming an oxidized metallopolymer electrode, (b) contacting a product mixture comprising a reaction product and a noble metal catalyst and oxidized metallopolymer electrode, (c) selectively adsorbing the catalyst to the oxidized metallopolymer electrode, (d) collecting the reaction product when the catalyst is adsorbed to the oxidized metallopolymer electrode, (e) contacting an electrolyte and the loaded electrode, (f) applying a second potential to the loaded electrode and transforming oxidized metal species to a reduced state, (g) desorbing the adsorbed noble metal catalyst from the loaded electrode into the electrolyte, and (h) contacting the desorbed noble metal catalyst and an organic substrate to form the product mixture, where the noble metal catalyst is electrochemically recycled from the reaction mixture, the noble metal moiety of the catalyst binds to the oxidized metal species and forms a loaded electrode, and the second potential is less relative to the first potential by at least 0.1 V. An INDEPENDENT CLAIM is included for an electrochemical apparatus, which comprises (a) at least one working electrode, each of which comprises a current collector, conductive binder, and a redox metallopolymer, (b) at least one counter electrode, (c) an electrical power source, (d) a reaction chamber, and (e) a flow inlet and a flow outlet, where the redox metallopolymer is a selective binder and reversible binder of a noble metal catalyst.