Influence of metal cation doping on Ru/CeO sub(2)/Al sub(2)O sub(3) catalyst for steam reforming of desulfurized kerosene

The catalytic activity of metal cation doped Ru/CeO sub(2)/Al sub(2)O sub(3) as pre-reforming catalysts for steam reforming of desulfurized kerosene was investigated at a moderate temperature. The oxygen storage capacity (OSC) was significantly improved by Tb and Zr doping. The improved OSC by dopin...

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Published inInternational journal of hydrogen energy Vol. 40; no. 6; pp. 2657 - 2662
Main Authors Miyamoto, Manabu, Arakawa, Masami, Oumi, Yasunori, Uemiya, Shigeyuki
Format Journal Article
LanguageEnglish
Published 19.02.2015
Subjects
Aluminum oxide
Catalysts
Catalytic activity
Cations
Conversion
Desulfurizing
Doping
Kerosene
Reforming
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Summary:The catalytic activity of metal cation doped Ru/CeO sub(2)/Al sub(2)O sub(3) as pre-reforming catalysts for steam reforming of desulfurized kerosene was investigated at a moderate temperature. The oxygen storage capacity (OSC) was significantly improved by Tb and Zr doping. The improved OSC by doping metal cations was found to increase the conversion of desulfurized kerosene to C sub(1) products. Tb doping into CeO sub(2), in particular, could achieve the highest OSC and catalytic activity. The initial conversion of desulfurized kerosene was approximately 80% and deactivation was observed over Ru/CeO sub(2)/Al sub(2)O sub(3) with S/C = 3 at 873 K. In contrast, Ru/Ce sub(0.8)Tb sub(0.2)O sub(2)/Al sub(2)O sub(3) exhibited the complete conversion of desulfurized kerosene to C sub(1) products and stable catalytic performance at the same reaction condition. The Tb doping could inhibit the deactivation and increase the catalytic activity for degradation of long chain hydrocarbons and aromatics.
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ISSN:0360-3199
DOI:10.1016/j.ijhydene.2014.12.111