NO/sub x/ reduction catalyst for internal combustion engine emission control

Patent · Tue Feb 01 04:00:00 EST 1977

OSTI ID:7315367

Fedor, R J; Ogden, C S

A system for reducing NO/sub x/ gases found in the exhaust stream of the internal combustion engine is described. An NO/sub x/ reducing catalyst assembly communicating with the manifold includes a housing having an NO/sub x/ reducing catalytic structure of apertured thin metal foil which comprises a durable, chromium containing corrosion resistant metal substrate having bonded to it an effective amount of a NO/sub x/ reducing catalyst selected from the group consisting of iron, nickel, cobalt, copper, manganese and mixtures of these. In addition, an article composed of a catalytic material for reducing the oxides of nitrogen in exhaust gases from an internal combustion engine is also provided. The article includes a self-supporting catalytic structure in the form of an apertured, thin metal foil having a ratio of low mass to high surface area. In its preferred form, the foil is an expanded metal foil, and the article is formed by tightly winding the foil into a plural layer helical coil.

• Assignee: Gould Inc.
• Patent Number(s): US 4006105
• OSTI ID: 7315367
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330701* -- Emission Control-- Nitrogen Oxides
AIR POLLUTION CONTROL
CATALYSTS
CATALYTIC CONVERTERS
CHALCOGENIDES
CONFIGURATION
ENGINES
EQUIPMENT
FABRICATION
FOILS
HELICAL CONFIGURATION
INTERNAL COMBUSTION ENGINES
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SUBSTRATES