Novel Approach for Developing Dual-Phase Ceramic Membranes for Oxygen Separation through Beneficial Phase Reaction

Zhang, Zhenbao, Zhou, Wei, Chen, Yubo, Chen, Dengjie, Chen, Jiawei, Liu, Shaomin, Jin, Wanqin and Shao, Zongping (2015) Novel Approach for Developing Dual-Phase Ceramic Membranes for Oxygen Separation through Beneficial Phase Reaction. ACS Applied Materials and Interfaces, 7 41: 22918-22926. doi:10.1021/acsami.5b05812


Author Zhang, Zhenbao
Zhou, Wei
Chen, Yubo
Chen, Dengjie
Chen, Jiawei
Liu, Shaomin
Jin, Wanqin
Shao, Zongping
Title Novel Approach for Developing Dual-Phase Ceramic Membranes for Oxygen Separation through Beneficial Phase Reaction
Journal name ACS Applied Materials and Interfaces   Check publisher's open access policy
ISSN 1944-8252
1944-8244
Publication date 2015-09-29
Year available 2015
Sub-type Article (original research)
DOI 10.1021/acsami.5b05812
Open Access Status Not yet assessed
Volume 7
Issue 41
Start page 22918
End page 22926
Total pages 9
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
A novel method based on beneficial phase reaction for developing composite membranes with high oxygen permeation flux and favorable stability was proposed in this work. Various Ce0.8Sm0.2O2−δ (SDC) + SrCO3+CO3O4 powders with different SDC contents were successfully fabricated into membranes through high temperature phase reaction. The X-ray diffraction (XRD) measurements suggest that the solid-state reaction between the SDC, SrCO3 and CO3O4 oxides occurred at the temperature for membrane sintering, leading to the formation of a highly conductive tetragonal perovskite phase SmxSr1–xCOO3-δ. The morphology and elemental distribution of the dual-phase membranes were characterized using back scattered scanning electron microscopy and energy dispersive X-ray spectroscopy (BSEM-EDX). The oxygen bulk diffusivity and surface exchange properties of the materials were investigated via the electrical conductivity relaxation technique, which supported the formation of conductive phases. The SDC+20 wt % SrCO3+10.89 wt % Co3O4 membrane exhibited the highest permeation flux among the others, reaching 0.93 mL cm–2 min–1 [STP = standard temperature and pressure] under an air/helium gradient at 900 °C for a membrane with a thickness of 0.5 mm. In addition, the oxygen permeation flux remained stable during the long-time test. The results demonstrate the beneficial phase reaction as a practical method for the development of high-performance dual-phase ceramic membranes.
Keyword Oxygen permeation
Phase reaction
Permeation flux
Stability
Dual-phase membrane
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID BK2011030
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Non HERDC
 
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