Oxidative coupling of methane over strontium-doped neodymium oxide: Parametric evaluations

Faisal Alahmadi, Anastasiya Bavykina, Daria Poloneeva, Adrian Ramirez, Robert Schucker, Jorge Gascon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Since its discovery in 1982, oxidative coupling of methane (OCM) has been considered one of the most promising approaches for the on-purpose synthesis of ethylene. The development of more selective catalysts is essential to improve process economics. In this work, undoped neodymium oxide as well as neodymium oxide doped with high (20%) and low (2.5%) levels of strontium were tested in a high-throughput fashion covering a wide range of operating conditions. The catalysts were shown to be able to achieve greater than 18% C2+ yield. Space velocity was shown to play a significant role in C2+ selectivity. For a methane to oxygen feed ratio of 3.5, selectivity increased with increasing space velocity, reaching a maximum of 62% at a methane conversion of 30% at an optimal space velocity of ~250,000 ml/h/g. The difference in activity between the three samples was linked to the contribution of different oxygen centers.

Original languageEnglish (US)
Article numbere17959
JournalAIChE Journal
Issue number4
StatePublished - Apr 2023

Bibliographical note

Publisher Copyright:
© 2022 American Institute of Chemical Engineers.


  • neodymium oxide
  • oxidative coupling of methane
  • steam

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • General Chemical Engineering


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