Electric Field and Mobile Oxygen Promote Low-Temperature Oxidative Coupling of Methane over La1-xCaxAlO3-δ Perovskite Catalysts

Ayaka Sato, Shuhei Ogo, Yuna Takeno, Kent Takise, Jeong Gil Seo, Yasushi Sekine

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Oxidative coupling of methane (OCM) over La1-xMxAlO3-δ (M = Ca, Sr, Ba; x = 0, 0.1, 0.2, 0.3) in an electric field at low temperature (423 K) was investigated. Among the tested catalysts, the La0.7Ca0.3AlO3-δ catalyst showed the highest performance in terms of C2H6 + C2H4 yield (11.1%). Surface mobile oxygen species (O22- or O-), which were considered as active oxygen species for the OCM reaction, increased with increasing Ca doping amount, and thereby the La0.7Ca0.3AlO3-δ catalyst showed the best catalytic activity.

Original languageEnglish
Pages (from-to)10438-10443
Number of pages6
JournalACS Omega
Volume4
Issue number6
DOIs
Publication statusPublished - 2019 Jun 17

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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