NITROUS OXIDE DECOMPOSITION CATALYST Russian patent published in 2019 - IPC B01D53/56 B01D53/86 B01J21/04 B01J23/75 B01J23/78 B01J23/80 

FIELD: technological processes.

SUBSTANCE: invention relates to a method for preparing a catalyst. Method of preparing a catalyst for the decomposition of nitrous oxide, where the said catalyst contains oxides of cobalt, zinc and aluminium and an alkali metal promoter, includes steps of: I) preparing an aqueous solution containing zinc, cobalt and aluminium salts; II) precipitating a mass of metal oxide using an aqueous alkaline solution; III) drying the precipitated material; IV) forming catalyst particles from the precipitated material and V) calcining the catalyst particles thus formed, in which the alkali metal promoter is added during or after at least one of steps I) to V). Disclosed is a catalyst prepared by the process described above, and a method for decomposing nitrous oxide using a catalyst prepared by the disclosed process.

EFFECT: sufficient level of activity of the obtained catalyst in a wide range of temperatures, good stability and service life of the catalyst.

13 cl, 8 dwg