FIELD: engines and pumps.
SUBSTANCE: invention relates to cold start-up catalyst and its use in internal combustion engine exhaust system. Cold start-up catalyst contains zeolite catalyst and catalyst with applied platinum group metal. Zeolite catalyst contains iron, palladium and zeolite. Catalyst with applied platinum group metal contains one or more platinum group metals and one or more carriers from inorganic oxides. This invention also includes internal combustion engines exhaust system containing cold start-up catalyst.
EFFECT: improved preservation of NOx and conversion of NOx, improved preservation of hydrocarbons conversion and CO oxidation during cold start-up period.
11 cl, 5 tbl, 3 ex
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