CATALYST COMPOSITION AND METHOD FOR USE IN SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES Russian patent published in 2017 - IPC B01J29/72 B01D53/94 B01J29/46 B01J29/68

Abstract RU 2608616 C2

FIELD: chemistry.

SUBSTANCE: present invention relates to a catalyst composition for use in selective reduction of nitrogen oxides in exhaust gases through reaction with ammonia, to a monolithic structured body, coated with a catalyst composition, and to a method for selective oxidation of nitrogen oxides and oxidation of soot in presence of ammonia. Catalyst composition consists of acidic zeolite or zeotype component BEA, physically mixed with redox component, consisting of CeO₂-ZrO₂, or acid zeolite or zeotype component FER, physically mixed with Cu/Al₂O_3.

EFFECT: catalyst composition containing acid zeolite or zeotype components, physically mixed with metal compounds with redox activity, demonstrate improved activity in selective reduction of nitrogen oxides and oxidation of hydrocarbons, CO and soot, contained in exhaust gases.

14 cl, 7 dwg, 6 ex

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RU 2 608 616 C2

Authors

Stakheev Aleksandr Yu.

Grill Mari

Kustov Arkadij

Dates

2017-01-23—Published

2012-05-02—Filed