FIELD: chemical or physical processes.
SUBSTANCE: invention relates to a three-way catalyst. Described is a three-way catalyst for use in an exhaust system of an internal combustion engine, comprising: (1) a silver-containing extruded zeolite substrate; and (2) a catalyst layer disposed on the silver-containing extruded zeolite substrate, wherein the catalyst layer comprises a supported platinum group metal catalyst comprising one or more platinum group metals and one or more inorganic oxide supports, silver-containing extruded zeolite substrate, contains from 35.315 to 24720.27 g/m3 silver.
EFFECT: technical result is improved purification of exhaust gases of internal combustion engines.
10 cl, 2 tbl, 4 ex
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