Low-temperature oxidative coupling of methane using alkaline earth metal oxide-supported perovskites

Seoyeon Lim, Jae Wook Choi, Dong Jin Suh, Ung Lee, Kwang Ho Song, Jeong Myeong Ha

Research output: Contribution to journalArticle

Abstract

Perovskite-supported alkaline-earth metal oxide catalysts were prepared for application in the oxidative coupling of methane (OCM). The selective production of C2+ compounds, including ethane, ethylene, acetylene, propane, and propylene, was observed at reaction temperatures < 700 °C. This lower reaction temperature was not achieved with pure perovskites but only with the combination of alkaline-earth metal oxides and perovskite supports. The formation of complex mixed oxides, such as Ba-Ca-Ti-Ox, Ba-Sr-Ti-Ox, and Ba2TiO4, was also observed for these catalysts. This contributed to the improved C2+ yield at the lower reaction temperature. The strong basicity, which contributes to the improved OCM activity, was also observed for these catalysts.

Original languageEnglish
JournalCatalysis Today
DOIs
Publication statusAccepted/In press - 2020 Jan 1

Keywords

  • Alkaline-earth metal oxide
  • Barium oxide
  • Low temperature
  • Methane
  • Oxidative coupling
  • Perovskite

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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