Catalytic performance and characterization of Ni-Fe catalysts for the steam reforming of tar from biomass pyrolysis to synthesis gas
Catalytic performance and characterization of Ni-Fe catalysts for the steam reforming of tar from biomass pyrolysis to synthesis gas
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DOI：
10.1016/j.apcata.2010.11.013
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发表时间：
2011-01-29
影响因子：
5.5
通讯作者：
Tomishige, Keiichi
中科院分区：
文献类型：
--
作者：
Wang, Lei;Li, Dalin;Tomishige, Keiichi
最佳组成的Ni-Fe/Al_2O_3催化剂对柏木热解焦油水蒸气重整反应的催化性能明显高于相应的单金属Ni和Fe催化剂。催化剂的表征结果表明，催化剂表面形成了Ni-Fe合金，合金表面的Fe原子有向表面富集的趋势，表明该结构在反应过程中基本保持不变。表面Fe原子提供氧物种，促进焦油的反应并抑制焦炭的形成。过量Fe的加入降低了催化剂表面Ni原子的数量，从而降低了催化剂的活性。(C)2010 Elsevier B. V.保留所有权利。
Catalytic performance of Ni-Fe/Al2O3 catalysts with the optimum composition was much higher than corresponding monometallic Ni and Fe catalysts in the steam reforming of tar from the pyrolysis of cedar wood. According to the catalyst characterization, the Ni-Fe alloys were formed and the Fe atoms on the alloys tend to be enriched on the surface, and it was suggested that the structure was maintained mainly during the reaction. The surface Fe atoms supply oxygen species, enhancing the reaction of tar and suppressing the coke formation. Excess Fe addition decreased the catalytic activity by decreasing the surface Ni atoms. (C) 2010 Elsevier B.V. All rights reserved.