FIELD: chemistry.
SUBSTANCE: invention relates to purification of exhaust gases of gasoline engines. The use of aluminum oxide doped with 10-30 wt.% of a doping additive in TWC catalyst substrate for suppression of poisoning platinum group metals (PGM) with CO is described, where the doping additive is selected from a group consisting of La, Sr, Si, Ba, Y, Pr, Nd, and Ce.
EFFECT: suppression of poisoning platinum group metals with CO.
6 cl, 3 tbl, 5 ex, 5 dwg
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