Photodecomposition of water with methane over titanium oxide photocatalysts modified with metal

Metal-loaded titanium oxide photocatalysts produced hydrogen in the photodecomposition of water vapor with methane in the flow reactor. Ag/TiO 2 has the highest activity in comparison with other metal-loaded catalysts. The experiment in the absence of methane indicated that methane could effectively...

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Bibliographic Details
Published in:Research on chemical intermediates 2010-09, Vol.36 (5), p.463-472
Main Authors: Ichihashi, Yuichi, Yamaguchi, Megumi, Nishikawa, Yo-hei, Taniya, Keita, Tsuruya, Shigeru, Nishiyama, Satoru
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Physical Chemistry
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Summary:Metal-loaded titanium oxide photocatalysts produced hydrogen in the photodecomposition of water vapor with methane in the flow reactor. Ag/TiO 2 has the highest activity in comparison with other metal-loaded catalysts. The experiment in the absence of methane indicated that methane could effectively function as a reducing reagent of water. The significant decrease in the hydrogen formation rate with the time on stream was observed under all reaction conditions. The recalcination and the hydrogen rereduction of the used catalyst led to the restoration of the activity of the hydrogen formation. The adsorption of products and/or reactants on the catalyst surface seemed to cause these deactivations of the hydrogen formation.
ISSN:0922-6168
1568-5675
DOI:10.1007/s11164-010-0154-1