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Catalyst of rhodium on zirconia

Patent ·
OSTI ID:6367332
; ; ; ;
A catalyst system and method of making the same is taught for treating exhaust gases from an internal combustion engine. A catalyst system includes a substrate and a washcoat on the substrate. The washcoat is formed of zirconia. A catalyst is placed on the washcoat consisting of rhodium metal or rhodium metal with another catalyst metal. By using zirconia as a washcoat, the rhodium is not dissolved into the washcoat during periods when the catalyst system is subjected to high temperature oxidizing conditions, as is the case when a gamma alumina washcoat is used.
Assignee:
Ford Motor Co
Patent Number(s):
US 4233189
OSTI ID:
6367332
Country of Publication:
United States
Language:
English

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Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100 -- Internal Combustion Engines
330700* -- Advanced Propulsion Systems-- Emission Control
CATALYSTS
CATALYTIC CONVERTERS
CHALCOGENIDES
DESIGN
ELEMENTS
ENGINES
EQUIPMENT
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
METALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
POLLUTION CONTROL EQUIPMENT
PURIFICATION
REFRACTORY METALS
RHODIUM
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WASTES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES