Systematic Selection of Mixed Conducting Perovskite Materials for Oxygen Separation

Abstract

Abstract: A strategy for the systematic selection of perovskite-type mixed conducting membranes with high oxygen
permeability, phase stability and thermo-chemical stability was developed. Several promising membrane materials were then pointed out. Some of the
materials were synthesized by using standard ceramic method and complexing method, their oxygen permeability and stability were investigated and
compared with several typical conducting membranes such as SrCo_0.8Fe_0.2O_3-δ and SrCo_0.5FeO_3.25 etc. The results show that the new materials indeed possess the expected properties.
The permeability of a typical material, Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ membrane at 850℃ reaches 1.16mL[STP]·cm^-2·min^-1, higher than that of SrCo_0.8Fe_0.2O_3-δ
membrane under similar operation conditions, the permeation flux can keep stable more than 1000h’s operation.

Key words: perovskite, ceramic membrane, oxygen separation, partial oxidation of methan

CLC Number:

O484

SHAO Zong-Ping,XIONG Guo-Xing,YANG Wei-Shen. Systematic Selection of Mixed Conducting Perovskite Materials for Oxygen Separation[J]. Journal of Inorganic Materials.

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Systematic Selection of Mixed Conducting Perovskite Materials for Oxygen Separation

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