Dual purpose auto exhaust catalysts

Patent · Tue Dec 30 04:00:00 EST 1975

OSTI ID:7366512

Kim, G; Ernest, M V

A process is described for the manufacture of a catalyst for converting the carbon monoxide, hydrocarbons, and nitrogen oxides which appear in the exhaust from automobiles to harmless carbon dioxide, water, and nitrogen. The catalyst consists of a simple mixture of two catalytic compositions. The major component of the mixture is capable of reducing nitrogen oxides, and the minor component is capable of oxidizing hydrocarbons and carbon monoxide. The use of this mixture shows unexpected synergistic activity for the removal of carbon monoxide and hydrocarbons without sacrificing the activity for nitrogen oxide removal.

• Assignee: W. R. Grace and Co.
• Patent Number(s): US 3929965
• OSTI ID: 7366512
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330701* -- Emission Control-- Nitrogen Oxides
330702 -- Emission Control-- Carbon Monoxide
330704 -- Emission Control-- Hydrocarbons
AUTOMOBILES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC CONVERTERS
CHALCOGENIDES
CHEMICAL REACTIONS
DISPERSIONS
EQUIPMENT
EXHAUST GASES
FABRICATION
GASEOUS WASTES
HYDROCARBONS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
REDUCTION
TESTING
VEHICLES
WASTES