Fe-Cu Bimetallic Catalysts for Selective CO2 Hydrogenation to Olefin-Rich C2+ Hydrocarbons

Wenjia Wang, Xiao Jiang, Xiaoxing Wang, Chunshan Song

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24 Scopus citations

Abstract

This paper reports on Fe-Cu bimetallic catalysts supported on γ-alumina for selective CO2 hydrogenation to olefin-rich C2+ hydrocarbons. A strong synergetic promoting effect on C2+ hydrocarbon synthesis was observed over Fe-Cu bimetallic catalysts when the Cu/(Cu + Fe) atomic ratio was 0.17. Compared to monometallic Fe catalyst, the Fe-Cu bimetallic catalyst significantly enhances C2-C7 hydrocarbon formation and suppresses the formation of undesired CH4. The addition of K into Fe-Cu bimetallic catalysts inhibits the methanation and further enhances the formation of C2+ hydrocarbons in the meantime. The synthesis of olefin-rich C2-C4 hydrocarbons from CO2/H2 was achieved by using K-promoted Fe-Cu/Al2O3 catalysts with higher K/Fe atomic ratios (e.g., K/Fe ≥ 0.5), where the selectivity of C2-C4 olefin contents was even higher than K-promoted Fe-Co catalysts under the same reaction conditions.

Original languageEnglish (US)
Pages (from-to)4535-4542
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume57
Issue number13
DOIs
StatePublished - Apr 4 2018

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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