Highly stable Sr and Na co-decorated Fe catalyst for high-valued olefin synthesis from CO2 hydrogenation

Joshua Iseoluwa Orege, Jian Wei, Yu Han, Meng Yang, Xingtao Sun, Jixin Zhang, Cederick Cyril Amoo, Qingjie Ge, Jian Sun

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Direct catalytic hydrogenation of CO2 is a highly promising route for olefin synthesis. However, achieving high olefin selectivity is predicated on the development of a selective catalyst with acceptable yield and stability. Herein, we report a Sr and Na co-decorated Fe catalyst that showed stable performance in the synthesis of high-valued olefins (ethene, propene and linear α-olefins) with space-time yield up to 290 mg gcat−1 h−1 without significant deactivation for over 500 h on-stream. The excellent catalytic performance is attributed to the cooperative effect of Sr and Na on the distinct sites (Fe5C2, Fe3C, Fe3O4) in catalyst. In particular, SrCO3 promoted the dispersion of binding Fe sites that facilitated the formation and stabilization of FeCx phase. Simultaneously, Sr contributed to the electron interaction between Na and Fe species. The dual effect of Sr as both structural and electronic promoters coordinatively improved C–O dissociative adsorption and subsequent C–C coupling, thus facilitated CO2 hydrogenation.
Original languageEnglish (US)
JournalApplied Catalysis B: Environmental
Volume316
DOIs
StatePublished - Nov 5 2022
Externally publishedYes

ASJC Scopus subject areas

  • General Environmental Science
  • Catalysis
  • Process Chemistry and Technology

Fingerprint

Dive into the research topics of 'Highly stable Sr and Na co-decorated Fe catalyst for high-valued olefin synthesis from CO2 hydrogenation'. Together they form a unique fingerprint.

Cite this