Material and system for catalytic reduction of nitrogen oxide in

Details Material and system for catalytic reduction of nitrogen oxide in Material and system for catalytic reduction of nitrogen oxide in

1996-07-03

1998-11-03

Tran, Hien

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

4232135, 4232391, 422171, 422177, 502242, 502339, 502349, 502350, B01J 800

Patent

active

058304215

ABSTRACT:
A catalytic material of activated hydrous metal oxide doped with platinum, palladium, or a combination of these, and optionally containing an alkali or alkaline earth metal, that is effective for NO.sub.X reduction in an oxidizing exhaust stream from a combustion process is disclosed. A device for reduction of nitrogen oxides in an exhaust stream, particularly an automotive exhaust stream, the device having a substrate coated with the activated noble-metal doped hydrous metal oxide of the invention is also provided.

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