COMPOSITION, BASED ON ZIRCONIUM OXIDE, TITANIUM OXIDE OR MIXED ZIRCONIUM AND TITANIUM OXIDE, APPLIED ON SILICON OXIDE CARRIER, METHODS OF OBTAINING THEREOF, APPLYING THEREOF AND APPLYING THEREOF AS CATALYST Russian patent published in 2014 - IPC C01G23/04 C01G25/02 B01J21/06 B01J37/08 B82B3/00 B82Y30/00 

FIELD: chemistry.

SUBSTANCE: group of inventions can be used in the production of catalysts, in particular, for the selective NO_x reduction. A catalytic composition contains at least one oxide on a carrier, consisting of zirconium oxide, or titanium oxide, or mixed zirconium and titanium oxide, or of zirconium oxide and an oxide of at least one oxide of other element, selected from praseodymium, lanthanum, neodymium and yttrium, applied on a silicon oxide-based carrier. After burning at 900°C for 4 hours the oxide on the carrier has a shape of particles applied on the carrier. The size of the said particles constitutes not more than 5 nm, if the oxide on the carrier is obtained on the basis of zirconium oxide, not more than 10 nm, if the oxide on the carrier is obtained on the basis of titanium oxide, and not more than 8 nm, if the oxide on the carrier is obtained on the basis of mixed zirconium and titanium oxide. After burning at 1000°C for 4 hours the size of the particles constitutes not more than 7 nm, if the oxide on the carrier is obtained on the basis of zirconium oxide, not more than 19 nm, if the oxide on the carrier is obtained on the basis of titanium oxide, and not more than 10 nm, if the oxide on the carrier is obtained on the basis of mixed zirconium and titanium oxide.

EFFECT: invention makes it possible to reduce the size of the particles in the catalytic composition, their aggregation and sintering at high temperature.

10 cl, 1 tbl, 9 ex