Catalyst for treating exhaust gas from an internal combustion engine

Patent · Tue Nov 11 04:00:00 EST 1980

OSTI ID:6367339

Gandhi, H S; Shelef, M

This invention is directed to an equilibrium catalyst for treating oxides of nitrogen, carbon monoxide and unburned hydrocarbons found in an exhaust gas stream from an internal combustion engine. The catalyst includes a substrate, a selective three-way equilibrium catalyst, an oxygen storage material component for maintaining the activity of the equilibrium catalyst during momentary excursions of the exhaust gas stream into oxygen rich conditions, an active metal component for a water gas and steam reforming process which maintains the overall activity of the equilibrium catalyst when treating an exhaust gas stream deficient in oxygen, and a component for oxidation of hydrocarbons and carbon monoxides when the exhaust gas stream is developed from the burning of air mixtures of about stoichiometric proportions.

• Assignee: Ford Motor Co
• Patent Number(s): US 4233188
• OSTI ID: 6367339
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100 -- Internal Combustion Engines
330700* -- Advanced Propulsion Systems-- Emission Control
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC CONVERTERS
CHALCOGENIDES
DESIGN
ELEMENTS
ENGINES
EQUIPMENT
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
METALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
PURIFICATION
TRANSITION ELEMENTS
WASTES