Stable Ce0.8Gd0.2O2-δ oxygen transport membrane reactor for hydrogen production

Wenyuan Liang, Andreas Kaiser, Armin Feldhoff, Stefan Baumann, Wilhelm A. Meulenberg, Tianmiao Hu, Jian Xue, Heqing Jiang, Zhengwen Cao*, Jürgen Caro

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Hydrogen production using oxygen transport membrane reactors has attracted widespread attention. However, the structural stability of membrane materials under harsh reducing atmospheres is still a significant challenge. Gadolinium doped cerium oxide (CGO) presents high ionic conductivity and good reducing resistance but is limited by its poor electronic conductivity. Herein, a 2 mol.% cobalt-doped Ce0.8Gd0.2O2-δ (CoCGO) ultrathin membrane was manufactured by thin-film technology and applied to hydrogen production from water splitting (WS) with simultaneous syngas production through partial oxidation of methane (POM). Two catalysts, La0.4Sr0.6CoO3-δ (LSC) and Ni/Al2O3, were utilized for promoting WS and POM, respectively. Hydrogen production rate above 1.8 mL·min-1·cm-2 and methane conversion of around 80% were achieved, and no noticeable degradation was detected during 100 h operation, suggesting its prospective stability advantages as a membrane reactor for hydrogen production from water.
Original languageEnglish
Article number118980
JournalApplied Catalysis A: General
Volume650
Number of pages6
ISSN0926-860X
DOIs
Publication statusPublished - 2023

Keywords

  • Oxygen Transport Membrane
  • Stability
  • Hydrogen Production
  • Partial Oxidation of Methane

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