Catalyst for the diminution of automobile exhaust gases

Patent · Mon Jan 20 04:00:00 EST 1975

OSTI ID:7290448

Ford, J A; Butt, S H

A process for producing a catalyst for the removal of carbon monoxide and hydrocarbons from automobile exhaust gases is described. A substrate of a nickel base single-phase alloy in solid solution, 2 to 6 percent by weight aluminum and balance of 50 to 98 percent essentially of nickel, is capable of forming an adherent oxide layer mainly of aluminum oxide. The substrate alloy is oxidized to produce the adherent alumina-rich layer at a temperature of from 350/sup 0/ to 1,000/sup 0/F for a time of from 1 minute to 20 hours, with the layer having a thickness of from 100 to 10,000 A. A layer of metal is then applied, having a thickness from 100 to 5,000 A and containing from .001 to 40 percent palladium, from 0.001 to 20 percent of a metal chosen from the group consisting of iridium, rhenium, osmium, ruthenium, and mixtures thereof, and balance essentially platinum.

• Assignee: Olin Corp.
• Patent Number(s): US 3944504
• OSTI ID: 7290448
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330702* -- Emission Control-- Carbon Monoxide
330704 -- Emission Control-- Hydrocarbons
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AUTOMOBILES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC CONVERTERS
CHALCOGENIDES
EQUIPMENT
FABRICATION
FILMS
HYDROCARBONS
NICKEL ALLOYS
NICKEL BASE ALLOYS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
SUBSTRATES
VEHICLES