METHOD OF PRODUCING CATALYSTS WITH NANOPARTICLES OF PLATINUM AND ITS ALLOYS WITH METALS Russian patent published in 2019 - IPC B01J37/03 B01J23/42 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing catalysts with nanoparticles of platinum and its alloys with metals for cathode and anode of low-temperature fuel cells and electrolytic cells, involving preparation of a solution of chloroplatinic acid or a mixture of chloroplatinic acid with metal salts in water or in an aqueous organic solvent, its mixing with dispersed carbon or non-carbon carriers, their mixtures and compositions with specific surface area of more than 60 m²/g, dispersion of the obtained mixture. Chemical reduction of compounds of platinum and a metal salt with subsequent deposition of nanoparticles of metallic platinum or its alloys on the disperse carrier is carried out by passing one of gases, for example nitrogen oxides (N₂O, NO, NO₂) or carbon oxides (CO, CO₂), or sulfur oxide (SO₂), or ammonia (NH₃) or their mixtures through solution at solution temperature from 5 to 98 °C.

EFFECT: obtaining a catalyst with given parameters with high values of catalytic activity in the oxygen electroreduction reaction and given values of structural characteristics: platinum / alloy nanoparticles of small and medium size combined with narrow size distribution, high uniformity of distribution of nanoparticles on the surface of the carrier, high electrochemically active surface area of platinum.

1 cl, 5 dwg, 2 tbl, 26 ex