Monolithic catalyst for exhaust gas purification
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United States of America Patent
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Jul 9, 1985
Issued Date -
N/A
app pub date -
Mar 23, 1984
filing date -
Nov 20, 1980
priority date (Note) -
Expired
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Abstract
A monolithic catalyst, for the purification of exhaust gases from an internal combustion engine, comprising: an inert carrier; a film of alumina and rare earth oxides coated onto the surface of said inert carrier, wherein Ce and La are present in said film at an atomic ratio of Ce/La of 0.05-0.3 and the total content of rare earth oxides in said film is 2-50 wt. %, measured as R.sub.2 O.sub.3, wherein R is an element of the lanthanide series of the Periodic Table; and said film carries a catalyst component containing at least one element of the platinum family.
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