燃料化学学报2012，Vol.40Issue(1)：48-53,6.
Effect of niobium promoter on iron-based catalyst for Fischer-Tropsch reaction
Effect of niobium promoter on iron-based catalyst for Fischer-Tropsch reaction
摘要
Abstract
Niobium-promoted Fe/CNTs catalysts were prepared using a wet impregnation method.Samples were characterized by nitrogen adsorption,H2-TPR,TPD,XRD and TEM.The Fischer-Tropsch Synthesis (FTS) was carried out in a fixed-bed microreactor at 220 ℃,1 atm and H2/CO =2 for 5 h.Addition of niobium into Fe/CNTs increased the dispersion,decreased the average size of iron oxide nanoparticles and the catalyst reducibility.Niobium-promoted Fe catalyst resulted in appreciable increase in the selectivity of C5+ hydrocarbons and suppressed methane formation.These effects were more pronounced for the 0.04％ Nb/Fe/CNTs catalyst,compared to those observed from other niobium compositions.The 0.04％ Nb/Fe/CNTs catalyst enhanced the C5+ hydrocarbons selectivity by a factor of 67.5％ and reduced the methane selectivity by a factor of 59.2％.关键词
CNTs/iron/niobium/Fischer-Tropsch synthesisKey words
CNTs/iron/niobium/Fischer-Tropsch synthesis分类
化学化工引用本文复制引用
Sardar ALI,Noor Asmawati MOHD ZABIDI,Duvvuri SUBBARAO..Effect of niobium promoter on iron-based catalyst for Fischer-Tropsch reaction[J].燃料化学学报,2012,40(1):48-53,6.基金项目
Ministry of Science,Technology and Innovation (E-Science Fund,03-02-02-SF0036) （E-Science Fund,03-02-02-SF0036）
Ministry of Higher Education Malaysia (FRGS/2/2010/SG/UTP/02/3) and Universiti Teknoiogi PETRONAS (31/09.10). （FRGS/2/2010/SG/UTP/02/3）
