Selective CO 2 Hydrogenation to Hydrocarbons on Cu-Promoted Fe-Based Catalysts

Dependence on Cu-Fe Interaction

Junhui Liu, Anfeng Zhang, Xiao Jiang, Min Liu, Yanwei Sun, Chunshan Song, Xinwen Guo

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Conversion of CO 2 to sustainable chemical feedstocks and fuels by reacting with renewable hydrogen is considered to be a promising direction in energy research. The selectivity of desired products, such as C 2 -C 4 = and C 5+ , is low over unpromoted iron-based catalysts for CO 2 hydrogenation. Therefore, promoters are often used to tailor and optimize the product distribution. In this work, the effect of doping Cu into Fe-based supported catalysts on the catalytic performance for CO 2 hydrogenation to hydrocarbons was studied with a particularly focus on the interaction between Fe and Cu. For this purpose, catalysts with different Fe and Cu distribution were prepared by various impregnation methods. It was found that the selectivity of C 2 -C 4 = over Cu-promoted catalysts decreased, but a significant improvement was obtained for C 5+ . This promoting behavior is different from that of other promoters (e.g., K, Mn, Zn, etc.). The secondary conversion of produced olefins on Cu-promoted catalysts, which results from the improvement of olefins adsorption, on Cu-promoted catalysts leads to the decrease of C 2 -C 4 = (hydrogenation) but the increase of C 5+ (oligomerization). Characterization results demonstrate that the catalytic performance is evidently associated with the strength of the interaction between Fe and Cu in the supported catalysts.

Original languageEnglish (US)
Pages (from-to)10182-10190
Number of pages9
JournalACS Sustainable Chemistry and Engineering
Volume6
Issue number8
DOIs
StatePublished - Aug 6 2018

Fingerprint

Carbon Monoxide
Hydrocarbons
Hydrogenation
catalyst
hydrocarbon
Catalysts
Alkenes
Catalyst supports
Olefins
Oligomerization
Impregnation
Feedstocks
Hydrogen
Iron
Doping (additives)
Adsorption
hydrogen
adsorption
iron
energy

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

Cite this

Liu, Junhui ; Zhang, Anfeng ; Jiang, Xiao ; Liu, Min ; Sun, Yanwei ; Song, Chunshan ; Guo, Xinwen. / Selective CO 2 Hydrogenation to Hydrocarbons on Cu-Promoted Fe-Based Catalysts : Dependence on Cu-Fe Interaction. In: ACS Sustainable Chemistry and Engineering. 2018 ; Vol. 6, No. 8. pp. 10182-10190.
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Selective CO 2 Hydrogenation to Hydrocarbons on Cu-Promoted Fe-Based Catalysts : Dependence on Cu-Fe Interaction. / Liu, Junhui; Zhang, Anfeng; Jiang, Xiao; Liu, Min; Sun, Yanwei; Song, Chunshan; Guo, Xinwen.

In: ACS Sustainable Chemistry and Engineering, Vol. 6, No. 8, 06.08.2018, p. 10182-10190.

Research output: Contribution to journalArticle

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T2 - Dependence on Cu-Fe Interaction

AU - Liu, Junhui

AU - Zhang, Anfeng

AU - Jiang, Xiao

AU - Liu, Min

AU - Sun, Yanwei

AU - Song, Chunshan

AU - Guo, Xinwen

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