Ali, S. and Mohd Zabidi, N. A. and Subbarao, D. (2012) Effect of niobium promoter on iron-based catalyst for Fischer-Tropsch reaction. [Citation Index Journal]
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Abstract
In the present work, we have modified Fe/CNTs catalysts with niobium. The catalysts were prepared using a wet impregnation method and promoted with niobium. 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 5h. 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%.
| Item Type: | Citation Index Journal |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Academic Subject Three: | petroleum engineering |
| Departments / MOR / COE: | Mission Oriented Research > Nanotechnology |
| ID Code: | 7941 |
| Deposited By: | Assoc Prof Dr Noor Asmawati Mohd Zabidi |
| Deposited On: | 14 Aug 2012 03:09 |
| Last Modified: | 20 Mar 2017 01:59 |
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