TY - JOUR AV - none TI - Effect of niobium promoter on iron-based catalyst for Fischer-Tropsch reaction SP - 48 N1 - cited By 8 SN - 2097213X PB - Science Press EP - 53 KW - Catalyst selectivity; Gas adsorption; Iron oxides; Methane; Niobium KW - Average size; CNT; Effect of niobium; Fischer-Tropsch reaction; Fixed bed micro-reactor; Iron-based catalyst; Nitrogen adsorption; Wet impregnation method; XRD; ]+ catalyst KW - Fischer-Tropsch synthesis ID - scholars3204 IS - 1 N2 - 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°C, 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 0.04Nb/Fe/CNTs catalyst, compared to those observed from other niobium compositions. The 0.04Nb/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. Y1 - 2012/// VL - 40 UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857490164&partnerID=40&md5=a6c85a034b79218ddb06c6d5ff3594da A1 - Ali, S. A1 - Zabidi, N.A.M. A1 - Subbarao, D. JF - Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology ER -