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Enhanced Fischer-Tropsch Performances of Graphene Oxide supported Iron Catalysts via Argon Pretreatment

Abstract

Graphene oxide (GO) supported iron oxide nanoparticles (NPs) have been successfully synthesized by a hydrothermal method and used as Fischer-Tropsch synthesis (FTS) catalysts. The GO with oxygen-containing groups may have a strong interaction with iron oxide NPs, retarding the contact between active sites and syngas. Argon pretreatment is used to modify the physical and chemical properties of catalysts with the purpose of enhancing FTS performances. The catalysts are thoroughly characterized by N2 physisorption, X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, temperature-programmed reduction, and Mössbauer spectroscopy. The pretreatment of catalysts in argon at 500 °C for 5 h can effectively increase the surface area and defects, weaken the Fe-GO interaction and expose more active catalytic sites. The Fe/GO-500 catalyst shows improved reduction and carburization behaviors, high CO conversion activity and C5+ selectivity, and excellent stability in FTS reaction.

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Publication details

The article was received on 01 Dec 2017, accepted on 05 Jan 2018 and first published on 09 Jan 2018


Article type: Paper
DOI: 10.1039/C7CY02449E
Citation: Catal. Sci. Technol., 2018, Accepted Manuscript
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    Enhanced Fischer-Tropsch Performances of Graphene Oxide supported Iron Catalysts via Argon Pretreatment

    Y. Wei, C. Zhang, X. Liu, Y. Wang, Q. Chang, M. Qing, X. Wen, Y. Yang and Y. Li, Catal. Sci. Technol., 2018, Accepted Manuscript , DOI: 10.1039/C7CY02449E

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