CATALYTIC CONVERTER HAVING CATALYST WITTH NOBLE METAL ON ALUMINA AND MOLECULAR SIEVE CRYSTAL SURFACE AND METHODS OF MAKING SAME
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United States of America Patent
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Issued Date -
Dec 20, 2001
app pub date -
Feb 16, 1999
filing date -
Feb 16, 1999
priority date (Note) -
Abandoned
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Abstract
A catalytic converter for treating exhaust gas from an internal combustion engine containing a catalyst characterized by having platinum or a platinum alloy dispersed on alumina particles and predominantly on the exterior surface of molecular sieve crystals. Also provided is a catalyst for such a converter and processes for manufacture of such catalyst. In addition, methods for treating exhaust gas from an internal combustion engine to reduce the amounts of hydrocarbon, carbon monoxide and nitrogen oxides emitted to the atmosphere are included.
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