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Journal of Chemistry
Volume 2013, Article ID 973160, 10 pages
http://dx.doi.org/10.1155/2013/973160
Research Article

Catalytic Performance of Fe-Mn/Si Nanocatalysts for CO Hydrogenation

Faculty of Chemistry, Razi University, P.O. Box 67149, Kermanshah 6714967346, Iran

Received 4 June 2012; Revised 31 July 2012; Accepted 10 August 2012

Academic Editor: Albert Demonceau

Copyright © 2013 Mostafa Feyzi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A series of (Fe, Mn)/SiO2 nanocatalysts ( , 10, 15, 20, 25, and 30 wt.%) were prepared by sol-gel method and studied for the light olefins production from synthesis gas. It was found that the catalyst containing 20 wt.% (Fe, Mn)/SiO2 is an optimal nano catalyst for production of C2–C4 olefins. Effects of sulfur treatment on the catalyst performance of optimal catalyst have been studied by espousing different volume fractions of H2S in a fixed bed stainless steel reactor. The results show that the catalyst treated with 6 v% of H2S had high catalytic performance for C2–C4 light olefins production. The best operational conditions were H2/CO = 3/2 molar feed ratio at 260°C and GHSV = 1100 h−1 under 1 bar total pressure. Characterization of catalysts was carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and surface area measurements.