Development of Ni catalysts for tar removal by steam gasification of biomass
Development of Ni catalysts for tar removal by steam gasification of biomass
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DOI：
10.1016/j.apcatb.2006.08.007
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发表时间：
2006-11-07
影响因子：
22.1
通讯作者：
Tomishige, Keiichi
中科院分区：
文献类型：
--
作者：
Kimura, Takeo;Miyazawa, Tomohisa;Tomishige, Keiichi
研究了共浸渍法和顺序浸渍法制备的Ni/CeO 2/Al 2 O3催化剂在真实的生物质（柏木）水蒸气气化反应中的催化性能。其中，共浸渍法制备的Ni/CeO 2/Al 2 O3催化剂的性能优于顺序浸渍法制备的Ni/Al 2 O3和Ni/CeO 2/Al 2 O3催化剂，且焦炭和焦油产率较低，气体产物产率较高。采用热重分析、程序升温还原、透射电镜和扩展X射线吸收精细结构等方法对Ni/CeO 2/Al 2 O3催化剂进行了表征，结果表明，共浸渍法比顺序浸渍法增强了Ni和CeO 2之间的相互作用。从催化剂性能和催化剂表征的结果来看，Ni和CeO 2之间的密切相互作用对生物质水蒸气气化有着非常重要的作用。(c)2006 Elsevier B. V.保留所有权利。
Catalytic performance of Ni/CeO2/Al2O3 catalysts prepared by a co-impregnation and a sequential impregnation method in steam gasification of real biomass (cedar wood) was investigated. Especially, Ni/CeO2/Al2O3 catalysts prepared by the co-impregnation method exhibited higher performance than Ni/Al2O3 and Ni/CeO2/Al2O3 prepared by the sequential impregnation method, and the catalysts gave lower yields of coke and tar, and higher yields of gaseous products. The Ni/CeO2/Al2O3 catalysts were characterized by thermogravimetric analysis, temperature-programmed reduction with H-2, transmission electron microscopy and extended X-ray absorption fine structure, and the results suggested that the interaction between Ni and CeO2 became stronger by the co-impregnation method than that by sequential method. Judging from both results of catalytic performance and catalyst characterization, it is found that the intimate interaction between Ni and CeO2 can play very important role on the steam gasification of biomass. (c) 2006 Elsevier B.V. All rights reserved.