Super-structure Pd-Cu alloy and preparation method thereof

Abstract

The invention discloses a super-structure Pd-Cu alloy. The super-structure Pd-Cu alloy is characterized in that the content of palladium and copper components in the Pd-Cu super-structure alloy is close to 1 to 1. A preparation method comprises the following steps: (1) adding a surfactant and a reducing agent together into a water solution; stirring at a room temperature for 10 to 30 minutes, wherein the mass ratio of the surfactant to the reducing agent ranges from (1 to 3) to (3 to 1), and the added water needs to completely dissolve the surfactant and the reducing agent; (2) adding a metal palladium salt precursor solution and a metal copper salt precursor solution into the mixed solution obtained by the step (1) respectively at a volume ratio ranging from (50 to 1 to 1) to (5 to 1 to 1); stirring at a room temperature for 10 to 30 minutes, wherein the concentrations of the metal salt precursor solutions are 0.1 to 1mol / L; (3) stirring the mixed solution obtained by the step (2) for 5 to 30 minutes at a room temperature, reacting in a high-pressure kettle for 1.5 to 3 hours and controlling the temperature to be 190 to 230 DEG C; and (4) cooling a product obtained by the step (3) and washing, and centrifuging and separating to obtain the super-structure Pd-Cu alloy.

Description

technical field [0001] The invention relates to a superstructure Pd-Cu alloy and a preparation method thereof, to the field of fuel cell catalysts, in particular to the catalytic oxidation reaction of formic acid at room temperature, and belongs to the field of materials. Background technique [0002] As a new energy source, fuel cells have the advantages of good safety, high conversion rate, and environmental friendliness. The precious metal-platinum has good stability and high catalytic activity for small organic molecules. In recent years, it has been favored by many researchers. However, platinum resources are scarce and expensive, which greatly limits its widespread use in the fuel cell industry, and also hinders the development of catalysts. At present, the discovery of alloy catalysts has changed this situation. Studies have shown that after noble metals form alloys with the second subgroup elements (iron, cobalt, nickel, copper), the structure of the noble metals cha...

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Problems solved by technology

The research on catalysts is mainly considered from the aspects of reducing agent, surfactant, grain size, dispersion, structure, etc., so as to prepare an ideal catalyst with high activity and good stability, but the current preparation methods and separation processes of catalysts are not Too complicated and inconvenient to operate; high requirements on equipment conditions; not conducive to industrial applications

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