Abstract
Nickel fiber mat was investigated as a potential structured catalyst for steam reforming of biogas in the temperature range of <TEX>$600-700^{\circ}C$</TEX>. The activity of as-received catalyst was very low owing to the smooth surface of fibers. Pretreatment of the catalyst by oxidation followed by reduction under methane partial oxidation condition significantly improved the catalytic activity, although degradation of the activity was found during the reaction due to oxidation and sintering. This deactivation was retarded by supplying additional hydrogen in the inlet gases or by coating <TEX>$CeO_2$</TEX> over the catalyst surfaces.
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