Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine
Reexamination Certificate
2011-08-16
2011-08-16
Vanoy, Timothy (Department: 1734)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Mixture is exhaust from internal-combustion engine
C423S239200, C060S301000
Reexamination Certificate
active
07998443
ABSTRACT:
A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C.
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Andersen Paul Joseph
Chen Hai-Ying
Fedeyko Joseph Michael
Weigert Erich
Johnson Matthey Public Limited Company
RatnerPrestia
Vanoy Timothy
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