Selective oxidation of CO in hydrogen over gold supported on manganese oxides
- Osaka National Research Institute, Ikeda (Japan); and others
To develop PEFCs for general use it is necessary to make catalysts that are able to operate at low temperature, that work in the presence of CO{sub 2} and H{sub 2}O, and which have the ability to selectively remove CO from reformed gas by oxidizing CO to CO{sub 2}, while at the same time being inactive for the oxidation of H{sub 2}. Through the screening of support materials which give the largest difference in catalytic activity between the oxidation of CO and H{sub 2}, we found Au/MnOx to be one of the best candidates for the removal of CO from hydrogen-rich fuel gases. Gold supported on manganese oxides has also been investigated by Hoflund and co-workers for CO oxidation reaction in an inert gas background and by Iwasawa and his co-workers for the preparation method by use of an organo gold complex in the liquid phase. Because supported gold catalysts prefer oxidizing pretreatments, our major concern has been whether Au/MnOx is stable in H{sub 2}. 13 refs., 3 figs.
- OSTI ID:
- 543392
- Journal Information:
- Journal of Catalysis, Journal Name: Journal of Catalysis Journal Issue: 1 Vol. 168; ISSN 0021-9517; ISSN JCTLA5
- Country of Publication:
- United States
- Language:
- English
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