Enhanced carbon dioxide decomposition using activated srfeo3−δ

Jaeyong Sim, Sang Hyeok Kim, Jin Yong Kim, Ki Bong Lee, Sung Chan Nam, Chan Young Park

Research output: Contribution to journalArticlepeer-review

Abstract

Today, climate change caused by global warming has become a worldwide problem with increasing greenhouse gas (GHG) emissions. Carbon capture and storage technologies have been developed to capture carbon dioxide (CO2 ); however, CO2 storage and utilization technologies are relatively less developed. In this light, we have reported efficient CO2 decomposition results using a nonperovskite metal oxide, SrFeCo0.5 Ox, in a continuous-flow system. In this study, we report enhanced efficiency, reliability under isothermal conditions, and catalytic reproducibility through cyclic tests using SrFeO3−δ . This ferrite needs an activation process, and 3.5 vol% H2 /N2 was used in this experiment. Activated oxygen-deficient SrFeO3−δ can decompose CO2 into carbon monoxide (CO) and carbon (C). Although SrFeO3−δ is a well-known material in different fields, no studies have reported its use in CO2 decomposition applications. The efficiency of CO2 decomposition using SrFeO3−δ reached ≥90%, and decomposition (≥80%) lasted for approximately 170 min. We also describe isothermal and cyclic experimental data for realizing commercial applications. We expect that these results will contribute to the mitigation of GHG emissions.

Original languageEnglish
Article number1278
Pages (from-to)1-13
Number of pages13
JournalCatalysts
Volume10
Issue number11
DOIs
Publication statusPublished - 2020 Nov

Keywords

  • CO decomposition
  • CO utilization
  • Climate change
  • Greenhouse gas
  • SrFeO

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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