| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: proposed invention relates to catalyst composition and can be used for treatment of, for example ICE exhaust gases. Composition based on zirconium oxide with concentration equal at least 25% comprises, in % by wt: 15 to 60 of cerium oxide, 10 to 25 yttrium oxide, 2 to 10 of lanthanum oxide and 2 to 15 of oxide of the other rare-earth metal Besides said composition, after incineration for 10 h at 1150C, features specific surface equal to at least 15 m2/g, and crystalline phase with cubic lattice. Composition results from formation of the mix containing compounds of zirconium, cerium, yttrium, lanthanum and additional rare-earth element, extraction of sediment from said mix with the help of base, heating said sediment in water, adding surfactant to sediment and its incineration. This composition can be used as a catalyst. ^ EFFECT: high reducing capacity and stable specific surface. ^ 23 cl, 5 tbl, 3 dwg, 13 ex |
