Process for the reduction of nitrogen oxides contained in exhaus

Details Process for the reduction of nitrogen oxides contained in exhaus Process for the reduction of nitrogen oxides contained in exhaus

1991-01-28

1992-02-04

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

423235, 423239, B01D 4700, B01J 800, C01B 2100

Patent

active

050858408

ABSTRACT:
A process for the reduction of nitrogen oxides in flue gases and engine exhaust gases is improved by contacting the gases with a zeolite catalyst containing oxides of the transition elements from Periods 4, 5 and 6 of the Periodic Table of Elements or oxides of the rare earths. In particular, faujasite zeolites, mordenites and SiO.sub.2 -rich zeolites are preferred.

REFERENCES:
patent: 4946659 (1990-08-01), Held et al.

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