METHOD OF PRODUCING PLATINUM CATALYSTS Russian patent published in 2011 - IPC B01J23/42 B82B3/00 B01J37/02 B01J32/00 

FIELD: process engineering.

SUBSTANCE: invention relates to production of metal-carbon compositions. Platinum catalysts represent metal-carbon compositions based on platinum nanoparticles secured on porous carbon carrier surface with metal content varying from 15 to 60 vol. %. Proposed method consists in pre-saturation of carrier surface by adsorbed complex platinum compounds that, in subsequent hydrolytic platinum deposition from solution, are converted into platinum surface oxides to initiate autocatalytic growth of nanoparticles of said oxides. Note here that deposition is carried out from solutions of the following composition: chloroplatinic acid (H₂PtCl₆) + alkaline agent + organic reducer, while final reduction of applied platinum is conducted in hydrogen flow at 120-250°C.

EFFECT: final catalysts with highly dispersed particles of applied metal.

3 cl, 46 ex, 8 tbl