Method for catalytic treatment of a gas for reducing...

Details Method for catalytic treatment of a gas for reducing... Method for catalytic treatment of a gas for reducing...

2007-08-28

2007-08-28

Johnson, Edward M. (Department: 1754)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

Reexamination Certificate

active

10333717

ABSTRACT:
A method and catalytic systems for treating a gas to reduce nitrogen oxide emissions are disclosed. The catalytic systems can include a catalytic composition which comprises an active phase on a support. The active phase is based on rhodium in the form RHx+and at least another element selected among palladium and platinum and the support is based on cerium oxide and zirconium oxide. Gases capable of being treated by the method and the catalytic systems include in particular those derived from gas turbines, from gas-fired or coal-fired stream plant boilers, or from internal combustion engines.

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