Ce0.9Pr0.1O2‐δ‐Pr0.6Ca0.4MnO3‐δ dual‐phase membranes: oxygen permeability and stability

Shu Wang, Xiaopeng Wang, Yanhang Huang, Lingyong Zeng, Yiyi He, Mebrouka Boubeche, Huixia Luo*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Previously unreported Ce0.9Pr0.1O2-δ-Pr0.6Ca0.4MnO3-δ (CPO-PCMO) dual-phase membrane is designed and successfully fabricated. The crystal structure, surface morphology, stability, and oxygen permeability is systematically investigated. The XRD results reveal that CPO-PCMO dual-phase membranes are made up of cubic fluorite phase and orthorhombic perovskite phase, which exhibit excellent stability at elevated temperature under air atmospheres as well as various low oxygen conditions such as Ar or CO2 atmospheres. In addition, no obvious holes, cracks, and impurities are observed. The obtained CPO-PCMO membrane with 0.8 mm thickness exhibits comparable oxygen permeability with a flux of 0.23 mL min−1cm−2 under air/He gradient at 1000 °C and stably works over 300 min without obvious deterioration under air/CO2 gradient, suggesting it has good CO2 stability.
Original languageEnglish
JournalChemie-Ingenieur-Technik
Number of pages9
ISSN0009-286X
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • Dual-phase membrane
  • Oxygen permeation
  • Pechini one-pot synthesis

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