NANOCATALYST AND PREPARATION METHOD THEREOF Russian patent published in 2011 - IPC B01J21/18 B01J23/42 B01J23/44 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to catalysts on a carbon support, which contain nanoclusters of catalytically active platinum group metals and methods of preparing said catalysts, meant for use in systems for removing carbon oxide from air. The catalyst for chemical oxidation of carbon monoxide contains one or more catalytically active platinum group metals on a nanodiamond support with specific surface area of 250-600 m²/g. Content of nanodiamond in the catalyst is in a range greater than 85-97 wt %. The method of preparing the catalyst in claim 1 involves dissolving salts and/or acid of a metal or platinum group metals in water, neutralisation of the obtained solution to pH=7 and the adding lithium formate solution, after which nanodiamond powder with specific surface area 250-600 m²/g is suspended in water and the metal or platinum group metals are reduced at temperature 30-50°C on the surface of the nanodiamond powder particles by adding a suspension of nanodiamonds to the obtained solution of salts and/or acids of a metal or platinum group metals, followed by extraction of a precipitate - nanodiamond powder from the solution, with metal or platinum group metals deposited on the surface of the nanodiamond particles.

EFFECT: intensification of the process of removing carbon oxide from air while lowering the cost of producing the catalyst.