Catalytic selective ethane dehydrogenation at low-temperature with low coke formation

Kosuke Watanabe, Takuma Higo, Hideaki Tsuneki, Shun Maeda, Kunihide Hashimoto, Yasushi Sekine*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Catalytic ethane dehydrogenation (EDH) was investigated to improve the efficient production of ethylene, an extremely important chemical feedstock. The perovskite oxide YCrO3 was found to be more suitable than earlier reported catalysts because it exhibits greater activity and C2H4 selectivity (94.3%) in the presence of steam at 973 K. This catalyst shows the highest activity than ever under kinetic conditions, and shows very high ethane conversion under integral reaction conditions. Comparison with EDH performance under conditions without steam revealed that steam plays an important role in stabilizing the high activity. Raman spectra of spent catalysts indicated that steam prevents coke formation, which is responsible for deactivating YCrO3. Transmission IR and XPS measurements also revealed a mechanism by which H2O forms surface oxygen species on YCrO3, consequently removing C2H6-derived coke precursors rapidly and inhibiting coke accumulation.

Original languageEnglish
Pages (from-to)24465-24470
Number of pages6
JournalRSC Advances
Issue number38
Publication statusPublished - 2022 Aug 30

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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