CATALYST FOR MODIFYING CARBON MONOXIDE AND METHOD FOR MODIFYING CARBON MONOXIDE USING IT

摘要

PROBLEM TO BE SOLVED: To provide an excellent catalyst showing higher low temperature activity, reduced in deterioration and not having the poisoning properties with respect to oxygen possessed by a copper type catalyst as compared with the copper type catalyst used heretofore as a catalyst for modifying carbon monoxide in a low temperature reaction region relatively low in reaction temperature.

SOLUTION: This catalyst is composed of platinum and a cerium/zirconium composite oxide and characterized in that the amount of platinum contained in the catalyst is 1-50 wt.% as metal platinum with respect to the sum total amount of metal platinum and the cerium/zirconium composite oxide. Further, in this catalyst, the atomic ratio of cerium/zirconium contained in the catalyst is 0.05-20.

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