CATALYST FOR NEUTRALISATION OF EXHAUST GASES AND METHOD OF PRODUCING SAID CATALYST Russian patent published in 2013 - IPC B01J23/63 B01D53/94 B01J23/58 B01J23/656 B01J23/89 B01J35/02 B01J37/02 F01N3/10 

FIELD: chemistry.

SUBSTANCE: present invention relates to a catalyst for neutralisation of exhaust gases of an internal combustion engine and a method of producing said catalyst. Described is a catalyst (1) for neutralisation of exhaust gases, having a catalyst unit which contains particles (6) of a noble metal; and a first substance (7) which carries particles of the noble metal; and an activator unit which contains a second substance (9) which is not in contact with particles of the noble metal and is capable of accumulating oxygen, a third substance which surrounds both the catalyst unit and the activator unit and separates particles of the noble metal and the first substance in the catalyst unit from the second substance in the activator unit, wherein the third substance has a plurality of fine pores, and the mean diameter of the fine pores is less than the mean diameter of particles of the first substance and the mean diameter of particles of the second substance, and wherein the average distance between the central point of the catalyst unit and the central point of the activator unit ranges from 5 nm to 300 nm. Described is a method of producing a catalyst involving separate or combined pulverisation of the first and second substances and simultaneous inclusion of the first and second substances pulverised with a precursor of the third substance.

EFFECT: high activity of particles of the noble metal and longer service life of the catalyst.

15 cl, 7 dwg, 2 tbl, 18 ex