期刊
BIORESOURCE TECHNOLOGY
卷 101, 期 -, 页码 S101-S103出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.03.036
关键词
Benzene; Steam reforming; Biomass gasification tar; Ni/CeO2-ZrO2
The steam reforming of benzene as a model compound of biomass gasification tar was carried out over various Ni/metal oxide catalysts. The effects of the support, temperature, Ni-precursor, Ni loading and reaction time were examined, and their catalytic performance was compared with that of a commercial Ni catalyst. Among the Ni/metal oxide catalysts used, 15 wt% Ni/CeO2(75%)-ZrO2(25%) showed the highest catalytic performance owing to its greater redox characteristics and increased surface area, irrespective of the reaction temperature. The catalytic activity of 15 wt% Ni/CeO2(75%)-ZrO2(25%) was higher than that of the commercial Ni catalyst. Moreover, the catalyst activity was retained due to its excellent resistance to coke deposition even after 5 h. The Ni-precursor played a critical role in the catalytic activity. With the exception of nickel nitrate, all the Ni-precursors (chloride and sulfate) caused deactivation of the catalyst. (C) 2009 Elsevier Ltd. All rights reserved.
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