@article{scholars3103, pages = {9--14}, year = {2012}, title = {Synthesis and characterization of bimetallic Fe/Co nanocatalyst on CNTs for Fischer-Tropsch reaction}, volume = {16}, journal = {Journal of Nano Research}, doi = {10.4028/www.scientific.net/JNanoR.16.9}, note = {cited By 7}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84856102483&doi=10.4028\%2fwww.scientific.net\%2fJNanoR.16.9&partnerID=40&md5=7088bc46d33f0dd5f39b86e281186eeb}, author = {Ali, S. and Mohd Zabidi, N. A. and Subbarao, D.}, abstract = {Cobalt and iron are common catalysts used in the Fischer-Tropsch (FT) reaction. This paper presents the synthesis and characterization of monometallic and bimetallic cobalt and iron nanoparticles supported on carbon nanotubes (CNTs). The CNTs-supported nanocatalysts were synthesized by a wet impregnation method at various ratios of Fe:Co. The physicochemical properties of the samples were analyzed by H 2-temperature programmed reduction (TPR), CO and H 2-chemisorption analyses, transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis. The effects of incorporation of Fe into Co on the physicochemical properties of Co/CNTs in terms of degree of reduction, CO and H 2 chemisorptions and morphologies were investigated. TEM showed that metal nanoparticles were well dispersed on the external surface and inside the CNTs. For monometallic Co/CNTs and Fe/CNTs, the average metal particle size was 5{\^A}{$\pm$}1 nm and 6{\^A}{$\pm$}1 nm, respectively. For the bimetallic 70Co30Fe/CNTs nanocatalysts, the average particle size was found to be 4{\^A}{$\pm$}1 nm. Metal particles attached to the outer walls were bigger than the ones inside the CNTs. H 2-TPR analysis of Co/CNTs indicated two temperature regions at 330{\^A}oC (low temperature) and 491{\^A}oC (high temperature). The incorporation of iron into cobalt nanocatalysts of up to 30 of the total metal loading enhanced the catalyst's H 2 and CO chemisorptions capacities and reducibility. {\^A}{\copyright} (2011) Trans Tech Publications, Switzerland.}, issn = {16625250}, keywords = {Average particle size; CNTs; CO chemisorption; Degree of reduction; External surfaces; Fischer Tropsch; Fischer-Tropsch reaction; High temperature; Iron nanoparticles; Low temperatures; Metal loadings; Metal nanoparticles; Metal particle; Nano-catalyst; Nanocatalysts; Physicochemical property; Temperature-programmed reduction; Two-temperature; Well-dispersed; Wet impregnation method, Carbon nanotubes; Catalysts; Chemisorption; Cobalt; Iron; Metals; Nanoparticles; Particles (particulate matter); Transmission electron microscopy; X ray diffraction; X ray diffraction analysis, Fischer-Tropsch synthesis} }