Cobalt-free gadolinium-doped perovskite Gdx1-xFeO3-δ as high-performance materials for oxygen separation

Yanjie Wang; Qing Liao; Yan Chen; Libin Zhuang; Haihui Wang

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Cobalt-free gadolinium-doped perovskite Gd_x_1-xFeO_3-δ as high-performance materials for oxygen separation

分离科学与工程 | Updated：2026-01-06

- Cobalt-free gadolinium-doped perovskite Gd_x_1-xFeO_3-δ as high-performance materials for oxygen separation
- Chinese Journal of Chemical Engineering Vol. 23, Issue 11, Pages: 1763-1767(2015)
- Affiliations：
  
  School of Chemistry & Chemical Engineering, South China University of Technology,Guangzhou,China,510640
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2015
- Accepted：
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摘要

Abstract

Cobalt-free oxides Gd

1-x

FeO

3-δ

(0.01 ≤ x ≤ 0.1)were achieved by a solid state reactionmethod. It is found that Gd

1-x

FeO

3-δ

(0.025 ≤ x ≤ 0.1) exhibits the cubic perovskite structure. Among Gd

1-x

FeO

3-δ

(0.025 ≤ x ≤ 0.1)

the Gd

0.025

0.975

FeO

3-δ

(GBF2.5) membrane shows the outstanding phase structure stability and the highest oxygen permeation

which can reach 1.44ml·cm

-2

·min

-1

at 950 ℃ under air/He oxygen partial pressure gradient. The GBF2.5 membranewas successfully operated formore than 100 h at 800 ℃ and the oxygen permeation flux through the membrane is 0.62 ml·cm

-2

·min

-1

. After 100 h oxygen permeation experiment at 800 ℃

X-ray diffraction (XRD) and energy dispersive X-ray spectrometer (EDXS) demonstrate that the GBF2.5 exhibits phase structure stability even at intermediate temperature.

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