Fe-MOF-derived highly active catalysts for carbon dioxide hydrogenation to valuable hydrocarbons

Junhui Liu, Anfeng Zhang, Min Liu, Shen Hu, Fanshu Ding, Chunshan Song, Xinwen Guo

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

Fe-based catalysts were acquired by one-step Fe-MIL-88B pyrolyzation and it showed high catalytic performance on hydrogenated conversion of carbon dioxide to valuable hydrocarbons. The iron compositions and catalytic performance of the catalysts were determined by pyrolysis temperatures according to XRD, SEM, TEM, N2-physisorption, Raman and evaluation results. Magnetite was obtained at 773 K while metallic iron was the main phase when the pyrolysis temperature increased to 973 K. Different catalytic performances over these catalysts were attributed to the transformation of iron species under the reaction conditions. Olefin-to-paraffin ratio (O/P) over pyrolyzed and K-doped catalysts was 1.3 and 5.5, respectively, and the two samples exhibited CO2 conversion with 46.0% and 43.1%, respectively. Higher catalytic performance was achieved when certain amount of Fe3O4 and χ-Fe5C2 existed in catalysts whereas metallic iron and/or θ-Fe3C had detrimental effects on lower conversion of CO2 and selectivity of valuable hydrocarbons.

Original languageEnglish (US)
Pages (from-to)100-107
Number of pages8
JournalJournal of CO2 Utilization
Volume21
DOIs
StatePublished - Oct 2017

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Process Chemistry and Technology

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