Catalytic Performance of Fe-Mn/SiO2 Nanocatalysts for CO Hydrogenation. (11th October 2012)

• Record Type: Journal Article
• Authors: Feyzi, Mostafa; Nadri, Shirin; Joshaghani, Mohammad
• Other Names: Demonceau Albert Academic Editor.
• Is Part Of: Journal of chemistry. Volume 2013(2013)
• Publication Date: 2012-10-11
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1155/2013/973160
• Languages: English
• ISSNs: 2090-9063

Abstract

Abstract : A series of x (Fe, Mn)/SiO2 nanocatalysts (x = 5, 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 H2 S in a fixed bed stainless steel reactor. The results show that the catalyst treated with 6 v% of H2 S 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.