The addition of niobia to nickel/alumina catalysts was evaluated for methane steam reforming, correlating with structural, textural and acid/base properties. The catalysts containing 5-10 wt Nb2O5 presented higher methane conversion at 800 A degrees C and did not deactivate during 24 h on stream, while coke formation was inhibited on the catalyst with 20 wt Nb2O5.
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