Selective reduction of nitric oxide

Details Selective reduction of nitric oxide Selective reduction of nitric oxide

1993-12-27

1994-10-11

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

423235, 4232392, 423212, B01D 4700, B01D 5334

Patent

active

053545443

ABSTRACT:
This invention is directed to a method of treating automotive exhaust gas emissions or stationary source emissions. It comprises introducing an organic hydrocarbon compound or compounds containing nitro or nitroso functional groups into the emissions at a location adjacent the source of emission generation. Thereafter, the compound/emission mixture is exposed to a transition metal exchanged high silica ZSM5 zeolite catalyst. Subsequently, the effluent from the zeolite catalyst is exposed to an oxidation catalyst.

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