relation: https://khub.utp.edu.my/scholars/3204/ title: Effect of niobium promoter on iron-based catalyst for Fischer-Tropsch reaction creator: Ali, S. creator: Zabidi, N.A.M. creator: Subbarao, D. description: 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. publisher: Science Press date: 2012 type: Article type: PeerReviewed identifier: Ali, S. and Zabidi, N.A.M. and Subbarao, D. (2012) Effect of niobium promoter on iron-based catalyst for Fischer-Tropsch reaction. Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology, 40 (1). pp. 48-53. ISSN 2097213X relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857490164&partnerID=40&md5=a6c85a034b79218ddb06c6d5ff3594da