COMPOSITION BASED ON ZIRCONIUM, CERIUM AND YTTRIUM OXIDES WITH INCREASED RESILIENCE, METHOD OF OBTAINING AND APPLICATION IN CATALYSIS Russian patent published in 2012 - IPC B01D53/34 B01J23/10 C01G1/02 

FIELD: chemistry.

SUBSTANCE: inventions can be used in systems of purification of exhaust gases of internal combustion engines. Composition for catalysts or catalyst substrates based on zirconium, cerium and yttrium oxides contains cerium oxide from 3% to 15%, yttrium oxide not more than 6%, if content of cerium oxide constitutes from more than 12% to 15% including; not more than 10%, if content of cerium oxide constitutes from more than 7% to 12% including; not more than 30%, if content of cerium oxide constitutes from 3 to 7% including; the remaining part - zirconium oxide. Composition can also contain oxide of rare earth element, selected from lanthanum, neodymium and praseodymium. Method of composition obtaining includes the following stages: contact of main compound and compound of zirconium, cerium, yttrium, other rare earth element, selected from lanthanum, neodymium and praseodymium, obtaining precipitate; heating sediment in liquid medium; addition of anionic SUS, non-ionogenic SUS, polyethylene glycol, carbonic acid and its salt, SUS such as carboxymethylated fatty alcohol ethoxylates; roasting obtained precipitate.

EFFECT: composition on invention after roasting at 1000°C for 4 h has degree of reduction, at least, 90% and specific surface, at least, 30 mІ/g.

14 cl, 5 tbl, 14 ex