SOOT OXIDATION CATALYSTS Russian patent published in 2019 - IPC B01J23/72 B01J23/18 B01J27/232 B01J21/10 B01J37/08 

FIELD: ecology.

SUBSTANCE: invention relates to the field of ecology, in particular to catalysts for the oxidation of soot and the method for their preparation, since the release of toxic compounds from engines significantly threatens the environment. Invention presents catalysts for the oxidation of carbon black, including metals: bismuth, copper and magnesium, and oxygen, forming magnesium cuprate MgCu₄O₅, magnesium bismuth Bi₁₂MgO₁₉ and magnesium oxide MgO. As an additional component in the composition of catalysts contains potassium carbonate K₂CO₃, while the catalyst has the following composition: Bi₁₂MgO_{19 –} MgO – K₂CO₃ or Bi₁₂MgO₁₉ – Cu₄MgO₅ – K₂CO₃. Invention relates to a method for producing a catalyst, in which, after the synthesis of magnesium bismuthite, magnesium cuprate and magnesium oxide, known catalysts Bi₁₂MgO₁₉ – MgO, Bi₁₂MgO₁₉ – Cu₄MgO₅ mixed with potassium carbonate K₂CO₃.

EFFECT: technical result is to oxidize the maximum amount of soot with a minimum amount of oxygen and reduce the volume of the catalyst.

2 cl, 8 ex, 1 tbl