Patent ID: 8784769

Claim:
An electrode-free catalyst for producing hydrogen peroxide from hydrogen and oxygen, consisting essentially of: a carrier made of anionic resin having a functional group selected among a sulfonic acid group, a carboxylic acid group, a phosphoric acid group and a phosphonic acid group; a polymer electrolyte multilayer film anchored on the carrier, in which cationic polymer electrolytes and anionic polymer electrolytes are alternately and repeatedly stacked on each other with a layer number of 2 to 30 to form the polymer electrolyte multilayer film, the cationic polymer electrolytes and the anionic polymer electrolytes each having a molecular weight of 2,000 to 500,000; and metal particles with an average size of 1 to 100 nm dispersed within the polymer electrolyte multilayer film, in which the metal particles are formed by dispersing metal precursors corresponding to the metal particles within the polymer electrolyte multilayer film and then reducing the dispersed metal precursors using a reducing agent, said metal particles selected from the group consisting of palladium (Pd), platinum (Pt), ruthenium (Ru), rhodium (Rh), iridium (Ir), silver (Ag), osmium (Os), nickel (Ni), copper (Cu), cobalt (Co), titanium (Ti), and mixtures thereof, said electrode-free catalyst exerting catalytic performance without electric potential.