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Synthesis and Characterization of Silica-Supported Iron Nanocatalyst by Modified Colloidal Method

Mohd Nasir, Nor Aziyan and Mohd Zabidi, N. A. and Chong, Fai Kait (2011) Synthesis and Characterization of Silica-Supported Iron Nanocatalyst by Modified Colloidal Method. [Citation Index Journal]

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Abstract

Silica-supported iron nanocatalysts for Fischer-Tropsch synthesis (FTS) were prepared using the modified colloidal method in the presence of surfactants in an organic medium. The iron loading on silica support was varied at 3, 5 and 6 wt %. The samples were characterized by XPS, TPR and TEM. The presence of Fe2O3 on the silica support was confirmed by XPS. TPR analysis showed that the increase in Fe loading caused the first reduction temperature of the nanocatalysts to shift to a higher temperature. TEM analysis revealed that the iron nanoparticles were not uniformly distributed on the silica support. The size of iron nanoparticles ranged from 4 nm to 20 nm. For the 3 and 5 wt % Fe/SiO2, the size of the iron nanoparticles were mostly in the range of 1-5 nm, whereas for the 6 wt%, most of the iron nanoparticles(74%) were in the range of 6-10 nm.

Item Type:Citation Index Journal
Subjects:Q Science > QD Chemistry
Departments / MOR / COE:Departments > Fundamental & Applied Sciences
ID Code:4690
Deposited By: Assoc Prof Dr Noor Asmawati Mohd Zabidi
Deposited On:17 Mar 2011 04:05
Last Modified:19 Jan 2017 08:23

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